ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Clarias gariepinus  (60)
  • Chemistry  (52)
  • Lagos (Nigeria)  (60)
  • Freshwater Biological Association  (39)
  • Lagos  (13)
  • 2020-2024
  • 2020-2023
  • 2020-2022  (112)
  • 1
    facet.materialart.
    Unknown
    The changes in various iron compounds in culture media for algae. [Translation from: Archiv fur Hydrobiologie Supplemente Band 38(1/2) 151-169, 1970.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4839 | 1256 | 2011-09-29 15:49:48 | 4839 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: The purpose of this work is a contribution to the quantitative record of the use of iron by planktonic algae. Preliminary experiments with Chlorella to determine the rate of iron intake in the presence of inorganic sources of iron did not produce the desired result. The crucial point of this work is the investigation of the influence of various external factors on the stability of FeEDTA (FeEDTA = Ferric(III)-compound of ethylene-diamine tetra-acetic acid), since this compound appears to be particularly well-suited as a source of iron for planktonic algae (e.g. TAMIYA et al. 1953). Cultures of Chlorella fusca in a light thermostat were used in experimental research. Methods and results are discussed.
    Description: Translated from German into English
    Keywords: Chemistry ; Ecology ; Limnology ; Biometrics ; Biological sampling ; Geographical distribution ; Population density ; Population characteristics ; Population number ; Freshwater crustaceans ; Population dynamics
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 2
    facet.materialart.
    Unknown
    Determination of dissolved oxygen in water with leukoberbelin-blue I. A quick Winkler method. [Translation from: Z.analyt.Chem. 262 97-99, 1972.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4843 | 1256 | 2011-09-29 15:49:28 | 4843 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: The reaction of Mn(II) with water-dissolved oxygen, to a higher manganese hydroxide in an alkaline medium, as with the longstanding classic Winkler method, is the first step in the method described here. The assumption for faultless results by the conventional and modified Winkler method is clean water, which contains no organic substances by Mn(III) or Mn(IV). In many cases, however, eg. in river and lake-water tests, it can be seen with the naked eye that after some time the originally brown-coloured precipitate of manganese hydroxide becomes more and more colourless. Oxygen content was analysed in the water samples and evaluated by raising the amount of the leuko-base and giving the corresponding dilution of the colouring matter solution formed still higher oxygen contents can be measured.
    Description: Translated from German into English
    Keywords: Chemistry ; Ecology ; Limnology ; Methodology ; Experimental research ; Dissolved oxygen ; Analytical techniques ; Water analysis
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 3
    facet.materialart.
    Unknown
    Nitrogen and phosphorus forms in water and the food requirements of algae. [Translation from: Wiadomosci Ekologiczne 19 238-244, 1973. ] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4848 | 1256 | 2011-09-29 15:49:18 | 4848 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: When dissolved in water, compounds of nitrogen and phosphorus ought to contain the basic assimilated food requirements for autotrophic plants and therefore autotrophic algae. This article summarises the occurrence of nitrogen in water, how species of algae utilize nitrogen and phosphorus forms for growth and the capacities of algae to adapt to environments of different nutrient wealth. This topic has unquestionable importance not only for the purpose of survival of a species but also in deciding indirectly about the stability of ecosystems.
    Description: Translated from Polish into English
    Keywords: Biology ; Chemistry ; Limnology ; Algae ; Nitrogen fixation ; Nitrogen ; Phosphorus ; Nutritional requirements ; Bacteria ; Organic compounds
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 4
    facet.materialart.
    Unknown
    Physiology of nitrate reduction in Pseudomonas aeruginosa. [Translation from: Z.allg.Mikrobiol. 13, 83-94, 1973.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4856 | 1256 | 2011-09-29 15:48:26 | 4856 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: Pseudomonas aeruginosa has for some time been known as a denitrifier. Pseudomonas aeruginosa was chosen for further studies, because P. aeruginosa occurs abundantly in Plusssee and moreover there are contradictory assertions on the gas products of denitrification by this bacteria. In experimental research the pattern of growth and gas production of Pseudomonas aeruginosa on nutrient broth was studied.
    Description: Translated from German into English
    Keywords: Chemistry ; Ecology ; Limnology ; Experimental research ; Bacteria ; Freshwater lakes ; Growth ; Microbiological culture ; Plusssee
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 5
    facet.materialart.
    Unknown
    Relationship of dimensions and weight in freshwater planktonic crustaceans. [Translation from: Doklady Akademii Nauk SSSR 84(1) 153-156, 1952. ] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4857 | 1256 | 2011-09-29 15:48:28 | 4857 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: There is no doubt that determination of the biomass of zooplankton (primarily of crustaceans) will be taken into consideration in practice and limnological works, especially after the recent publication of fairly comprehensive tables of weights of a whole range of species of freshwater copepods and cladocerans. The usefulness of applying formulae of determining the biomass of marine crustaceans for freshwater copepods is discussed.
    Description: Translated from Russian into English
    Keywords: Chemistry ; Ecology ; Limnology ; Freshwater crustaceans ; Zooplankton ; Biomass ; Formulae
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 6
    facet.materialart.
    Unknown
    For the determination of iron (II) and total iron with 2,2'-dipyridyl in mineral waters. Reduction of iron (III) with ascorbic acid [Translation from: Zeitschrift fur Analytische Chemie 209 340-341, 1965] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4877 | 1256 | 2011-09-29 15:47:02 | 4877 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: The determination of bi- and trivalent iron in proximity, in mineral waters has gained in significance, on biological and technical grounds. This short paper describes the procedure of the determination of bivalent iron and total iron in a water sample.
    Description: Translated from German into English
    Keywords: Chemistry ; Limnology ; Iron ; Acids ; Analytical techniques ; Minerals ; Water analysis
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 7
    facet.materialart.
    Unknown
    Nitrification in marine ecosystems [Translation from: Rapp.Naturvardsverket SNVPM No.1213, 157-166, 1980] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4964 | 1256 | 2011-09-29 15:39:04 | 4964 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-07
    Description: The nitrification in the ocean is influenced by several environmental factors and the importance of these is more or less known. There are very likely many more to be discovered in the study of the interaction of nitrification bacteria and other micro-organisms in the ocean. Some of the factors to be considered will briefly be dealt with in this paper. Then the authors give the results of an incubation experiment in the Baltic Sea and from a detailed study in Gullmarn.
    Description: Translated from Swedish into English
    Keywords: Chemistry ; Ecology ; Oceanography ; Marine ecology ; Nitrification ; Experimental research ; Sediment analysis ; Bacteria ; Carbon fixation ; Nitrosococcus oceanus ; Nitrococcus mobilis
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 8
    facet.materialart.
    Unknown
    Ratio of natural isotopes of nitrogen. I. Primary results: soils of Dombes [Translation from: Revue d'Ecologie et de Biologie du Sol 14, 279-287, 1977] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4967 | 1256 | 2011-09-29 15:36:52 | 4967 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-07
    Description: Utilization of the heavy isotope of nitrogen as a tracer has found numerous applications in soil biology. It allows better definition of different stages of the nitrogen cycle, in particular the immobilization-mineralization cycle. In this work, the authors report the results of calculations of natural isotope ratios of nitrogen in samples of water, soil and vegetation prevailing in Dombes and discuss the possibilities of errors and coefficients of fractionation.
    Description: Translated from French into English
    Keywords: Chemistry ; Ecology ; Limnology ; Nitrogen isotopes ; Soils ; Tracers ; Bacteria ; Nitrogen compounds ; France ; Dombes
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 9
    facet.materialart.
    Unknown
    Experiments on the production of a highly dispersible calcium carbonate. ('Experimental section' only) [Translation from: Szklo i Ceramiki 30, 133-136, 1979] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4963 | 1256 | 2011-09-29 15:39:01 | 4963 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-07
    Description: This short translation summarises experiments on the production of a highly dispersible precipitate of calcium carbonate. The translation covers the 'Experimental section' (of the original larger paper) only.
    Description: Translated from Polish into English
    Keywords: Chemistry ; Limnology ; Experimental research ; Calcium carbonates ; Magnetic fields ; Ultrasonic devices
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 10
    facet.materialart.
    Unknown
    Chemical composition of Iraq water resources (abbreviated translation) [Translation from: Vodnye Resursy 1975(4,) 173-185] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4988 | 1256 | 2011-09-29 15:36:31 | 4988 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-07
    Description: This abbreviated translation summarises the chemical composition of Iraq water resources. Among the described water bodies are the River Euphrates, Shatt al Arab River and a number of standing waters.
    Description: Translated from Russian into English
    Keywords: Chemistry ; Ecology ; Limnology ; Inland water environment ; Inland waters ; Water analysis ; Iraq
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 11
    facet.materialart.
    Unknown
    Mechanism of mass transfer in the formation of hydrothermal deposits of sulphides [Translation from: Trudy Inst.Geol.rudn.Mesterozh. 16, 80 [pages 44-46 ”Solubility of sulphides of iron” only], 1958] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4980 | 1256 | 2011-09-29 15:38:06 | 4980 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-07
    Description: This partial translation of the original paper provides the summary of this study of the mechanism of mass transfer in the formation of hydrothermal deposits of sulphides. For determining the solubility of sulphides of iron, the radioactive isotope Fe59 was used. The solubility of two sulphides was determined.
    Description: Translated from Russian into English
    Keywords: Chemistry ; Ecology ; Limnology ; Sulphide deposits ; Sulphides ; Hydrothermal deposits ; Iron isotopes ; Solubility
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 12
    facet.materialart.
    Unknown
    Some data on the content of organic carbon in rivers in the winter months. [Translation from: Gidrochim. Mat. 23, 36-38, 1955] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/5054 | 1256 | 2011-09-29 15:29:08 | 5054 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: Observations are reported on the content of organic matter in the Moscow region in 1941. Some data is given on alkalinity, oxygen content and colourisation of the rivers.
    Description: Translated from Russian into English
    Keywords: Biology ; Chemistry ; Limnology ; Rivers ; Organic matter ; Alkalinity ; Dissolved oxygen ; Colour
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 13
    facet.materialart.
    Unknown
    Final report on the updating service on environmental chemicals in freshwater for the period 9.1.89 to 9.7.89 (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5238 | 1256 | 2011-09-29 15:13:42 | 5238 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: This report presents five batches of data which have been despatched to the Joint Research Centre, Ispra. The data as been allocated to various ECDIN (Environmental Chemicals Data and Information Network) files. The data comprises environmental chemicals in the freshwater environment, taking in paricular consideration: aquatic toxicity, bioaccumulation, metabolism and elimination biodegradation.
    Keywords: Chemistry ; Ecology ; Limnology ; Data ; Data processing ; Data collections ; Chemical compounds ; Toxicity ; Bioaccumulation ; Biodegradation ; Metabolism
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 8
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 14
    facet.materialart.
    Unknown
    Changes of water quality and sediment phosphorus of a small productive lake following decreased phosphorus loading (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5293 | 1256 | 2011-09-29 15:08:09 | 5293 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Esthwaite Water is the most productive or eutrophic lake in the English Lake District. Since 1945 its water quality has been determined from weekly or biweekly measurements of temperature, oxygen, plant nutrients and phytoplankton abundance. The lake receives phosphorus from its largely lowland-pasture catchment, sewage effluent from the villages of Hawkshead and Near Sawrey, and from a cage-culture fish farm. From 1986 phosphorus has been removed from the sewage effluent of Hawkshead which was considered to contribute between 47% and 67% of the total phosphorus loading to the lake. At the commencement of phosphorus removal regular measurements of phosphorus in the superficial 0-4 cm layer of lake sediment were made from cores collected at random sites. Since 1986 the mean annual concentration of alkali-extractable sediment phosphorus has decreased by 23%. This change is not significant at the 5% level but nearly so. There has been no marked change in water quality over this period. Summer dominance of blue-green algae which arose in the early 1980s after decline of the previous summer forms, Ceratium spp., has been maintained. Improvement in water quality is unlikely to be achieved at the present phosphorus loading.
    Keywords: Chemistry ; Limnology ; Pollution ; Eutrophication ; Freshwater lakes ; Limnological surveys ; Phosphorus ; Phytoplankton ; Primary production ; Sediment analysis ; Water quality ; England ; Esthwaite Water
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 119-131
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 15
    facet.materialart.
    Unknown
    Growth performance of Clarias gariepinus fingerlings fed cooked breadfruit (Artocarpus altilis) seed meal as replacement for maize in outdoor hapas (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23040 | 19325 | 2018-03-05 20:36:36 | 23040 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: The growth performance and nutrient utilization in Clarias gariepinus fingerlings fed cooked breadfruit (Artocarpus altilis) seed meal based diet as a replacement for maize, investigated for 8 weeks. Five (5) diets of breadfruit seed meal substituted for maize at different levels of inclusion (0%; 25%; 50%; 75% and 100%) were fed to the fingerlings at 5% body weight twice daily in hapa of 1m x 1m x 1m. The hapas wee submerged in a pond and each hapa stocked with 20 fingerlings of mean weight of 5.8~c0.00g. Evaluation of growth parameters nutrient utilization of the experimental diets showed that there was no significant difference (P〉0.05) in mean final weight (MFW); specific growth rate (SGR); feed conversion rate (FCR) protein efficiency ratio (PER) and apparent net protein utilization (ANPU) among the treatments. The results suggested a net advantage of replacing dietary maize with cooked breadfruit seed meal for Clarias gariepinus fingerlings at 50% and above levels of inclusion under the condition of the experiment.
    Description: Includes:- 4 tables.;10 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Makurdi ; freshwater environment ; Fish culture ; Feeding experiments ; Growth rate ; Diets
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 292 - 296
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 16
    facet.materialart.
    Unknown
    Analysis of physicochemical characteristics of some freshwater bodies in Essien Udim Local Government Area of Akwa Ibom State, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23044 | 19325 | 2018-03-05 20:45:24 | 23044 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: The physical and chemical characteristics of freshwater bodies Ikot Ebak and Abeneyentem streams in Essien Udim Local Government Area, Akwa Ibom State, Nigeria were studied from (July December 1996). The mean values obtained in the two water bodies were pH (6.8~c0.12, 6.8~c0.09, respectively). Conductivity (4.9~c2.26, 5.0~c2.09 iScm-1), total dissolved solid (16~c7.58, 37~c26.9 mg/l), TSS (46~c26.0, 53~c53.1)g/l), alkalinity (17.5~c7.27, 10.7~c8S MgCaCo3/1), DO (6.98~C1.46, 8.3~C29.0mg/1), BOD (2.65~c2.44, 3.15~c2.79mg/1), Salinity (0.41~c0.12, 0.31~c0.04%o') total hardness (0.64~c0.21, 0.84~c0.42mg/l, N03-N (0.31~cO.26, 0.35~c0.29mg/l), and PD4-P (0.022~c0.0199 0.023~c.022mg/1), respectively. There were significant difference in the means of the parameters in the two water bodies except TDS, Alkalinity and Hardness. The water bodies were found to be slightly acidic with low conductivity. The properties in the water bodies were in conformity with international standards for both drinking and aquatic life.
    Description: includes:- 2 tables.;6 refs.
    Keywords: Chemistry ; Limnology ; Nigeria ; Ikot Ebak ; Nigeria ; Abeneyentem ; freshwater environment ; Physicochemical properties ; Alkalinity ; Salinity ; Dissolved oxygen
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 310 - 312
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 17
    facet.materialart.
    Unknown
    Evaluation of pawpaw leaf-based diets (Carica papaya) on growth and survival of African catfish (Clarias gariepinus) fingerlings reared in plastic bowls (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23049 | 19325 | 2018-03-06 15:26:25 | 23049 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: 200 fingerlings of African catfish (Clarias gariepinus) of average weight of 22.8~c0.04g were used to investigate the nutritive value of Pawpaw (Carica papaya) leaf-based diets. Five (5) isocaloric and iso-nitrogenous diets containing fishmeal protein at a rate of 0%, 25%, 50%, 75%, and 100% along with the pawpaw leaf were formulated. The diet without the pawpaw leaf meal serves as the control. The fish fingerlings were fed at 5% body weight per day for 56 days in plastic bowls. It was observed at the end of the experiment that pawpaw leaf meal was suitable as a protein supplement when incorporated at 50% replacement. The body weight gain, specific growth rate (SGR) and food conversion ratio (FCR) values of 18.68g, 1.07%/ day and 4.72 respectively were highest in diet with 50% replacement closely followed by diet with 25% replacement. Based on the results, it could be recommended that in practice 50% replacement of pawpaw leaf meal with fish meal is optimal in practical diet of African catfish (Clarias gariepinus) fingerlings. Nevertheless, complete replacement of pawpaw leaf meal decreases growth rate and should not be used in Clarias gariepinus fingerlings.
    Description: Includes: - 3 tables.;5 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Carica papaya ; Nigeria ; freshwater environment ; Fish culture ; Feeding experiments ; Diets
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 320 - 324
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 18
    facet.materialart.
    Unknown
    Effect of cold and hot smoking of Clarias gariepinus on consumer preference (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23062 | 19325 | 2018-03-10 14:32:20 | 23062 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: The objective of this study was to determine the best smoking method that will enhance consumer preference for Clarias gariepinus without affecting negatively the nutritive value. Two methods of smoking were used: cold and hot smoking. The fish were smoked with improvised drum smoking kiln and oven. Smoked fish samples obtained were subjected to chemical analyses and sensory evaluation. Chemical analyses showed that the smoked fish were still rich in protein (66.0067.52%) and fat (9.83-12.28%); while the moisture content ranged between 7.82-8.24% and ash, 12.86-14.16%. There was no significant difference (P〉0.05) in the protein, ash and moisture contents. Significant differences (P〈0.05) were observed in the Calcium(Ca), Potassium(K), Sodium(Na), Zinc(Zn), Lead(Pb), Iron(Fe) and Phosphorus(P) contents. Only hot smoke-dried (HSD) fish samples showed no presence of lead. The levels of sodium(Na) and potassium(K) in the smoked fish were relatively high, though, the amount of potassium(k) was higher. Sensory evaluation results revealed that there were no significant differences (P〉0.05) in the colour and taste ratings of the smoked fish samples. However, significant differences (P〈0.05) were observed in the odour, texture and overall acceptability. Hot smoke-dried and cold oven-dried Clarias gariepinus had the best overall acceptability in ratings.
    Description: Includes:- 1 table.;2 figs.;12 refs.
    Keywords: Fisheries ; Clarias gariepinus ; Nigeria ; freshwater environment ; Fishery products ; Processing fishery products ; Cured products ; Curing ; Mineral composition
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 389 - 393
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 19
    facet.materialart.
    Unknown
    Effect of stocking density on the growth rates of Clarias gariepinus in a floating hapa system (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23037 | 19325 | 2018-03-05 09:18:00 | 23037 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: An experimental growth trial in floating net-hapas at three stocking densities in concrete pond was carried out. 4.68 5.25g mean individual weight fish were stocked at 25, 50 and 100 per m3. A 40% protein balanced diet was used as feed. The results of the study showed no statistical significant difference in growth among the three treatments. Food conversion ratios ranged in 1.60 to 1.82, and specific growth rates were between 3.80 and 4.16%/day. The result suggests that culture of C. gariepinus at a density of 50/m3 and production of 4.15kg/m3 in 84 days with production of 8.30kg/m3 in a growing season of 180 days is possible using the net-hapa systems enclosed in a concrete pond.
    Description: includes:- 2 tables.;8 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Alau L. ; freshwater environment ; Fish culture ; Stocking density ; Growth rate ; Floating cages
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 276 - 278
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 20
    facet.materialart.
    Unknown
    Effects of salinity on larval dimension of Tilapia guineensis (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23422 | 19325 | 2018-04-25 19:24:46 | 23422 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Tilapia guineensis eggs were spawned and hatched in different salinities (17, 12, 7, 5, 2 and 0) ppt. The study was conducted in eight replicates. The aim of the investigation was to ascertain disparity in hatching size of Tilapia guineensis attributable to salinity. Immediately hatching was observed, body weight of five hatchlings in each replicate was individually weighed in milligramme. The individual total length of the five hatchlings was also measured in millimeter. The height of the yolk sac larva was determined with micro-metre screw gauge graduated in millimeter from the top of the yolk sac to the dorsal region of the larva. Data obtained were used to calculate yolk sac volume. Significant differences (P〈0.01) were observed in body weight and total length of larvae hatched in different salinities. The heaviest and longest larvae were hatched in 12 ppt saline water. The yolk sac volume of larvae hatched in lower salinities were significantly higher (P〈0.01) than the yolk sac volume of larvae hatched in higher salinities. The smallest yolk sac volume was recorded in 12ppt saline water. Our findings show that salinity could be manipulated for economic production of heavier seeds of Tilapia.
    Description: Includes:- 5 tables.;6 refs.
    Keywords: Aquaculture ; Chemistry ; Tilapia guineensis ; Nigeria ; brackishwater environment ; Salinity effects ; Larvae
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 51-55
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 21
    facet.materialart.
    Unknown
    Effects of length of delay after slaughter (Lodas) on raw catfish Clarias gariepinus (Burchell, 1822) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23418 | 19325 | 2018-04-25 19:17:12 | 23418 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The effect of delay after slaughter on microbial quality, proximate composition and sensory scores of raw catfish, Clarias gariepinus was evaluated. A total of 52 live catfish (average weight 700.0~c7.0g) were used for the experiment. Ten freshly slaughtered fish samples each were selected for organoleptic assessment at 0, 4, 8 and 12 hours post-slaughter, while three fish samples each were selected for chemical and microbial analyses. Microbial load on fish samples increased significantly (P〈 0.05) with increase in length of delay after slaughter, LODAS. Bacteria isolated included Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Bacillus spp and Staphylococcus aureus. Percent protein and ash contents of fish samples increased with increasing LODAS, while moisture content decreased and lipid was not affected. It was observed that raw C. gariepinus retained most of its physical attributes up to 4 hours post-slaughter. These quality attributes except colour and odour of gills, deteriorated significantly (P 〈 0.05) at every successive four-hour post-slaughter interval. Significant negative correlation existed between LODAS and sensory quality of raw fish (eyes, r = -0.966, P 〈 0.05; gills, r = -0.980, P 〈 0.05; skin, r = -0.998, P 〈 0.01; and odour, r = -0.994, P 〈 0.01). This study established that quality of raw C. gariepinus deteriorated with increasing LODAS and that raw C. gariepinus was not totally unacceptable when delayed for 12 hours after slaughter at ambient temperatures.
    Description: Includes:- 5 tables.;17 refs.
    Keywords: Aquaculture ; Fisheries ; Clarias gariepinus ; Nigeria ; Lagos ; Proximate composition ; freshwater environment ; Organoleptic properties ; Fish spoilage ; Microbiological analysis ; Microbial contamination
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 30-35
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 22
    facet.materialart.
    Unknown
    Comparative analysis of physicochemical characteristics of ABU and Zaria Dam (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23440 | 19325 | 2018-05-02 08:25:12 | 23440 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The physical and chemical parameters of ABU Dam and Zaria Dam were carried out between September and October 2009. The results obtained in the two water bodies were temperature 27.7 0C, pH (7.5 and 7.3), dissolved oxygen (5.8 mg/l and 5.0 mg/l), biochemical oxygen demand (1.74 mg/l and 2. 16 mg/l), alkalinity (58 mg CaC03/l and 49 mgCaCO3/l) P04-P (2.47 mg/l and 1.59 mg/l) NO3-N (3.67 mg/l and 3.47 mg/l), conductivity (54.70 ~ks-1 and 42.48 ~ks-1), total hydrocarbon (TH) (47.66 mg/l) and 48.00 mg/l) and total dissolved solids (32.68 mg/l and 25.35 mg/l) respectively. There was no significant difference in the mean values of the parameters (P〉0.05) except conductivity and total dissolved solids. The water bodies were found to be neutral with high conductivity. All the properties in the water bodies were in conformity with international standards both for drinking and aquatic life.
    Description: Includes:- 2 tables.;7 refs.
    Keywords: Chemistry ; Limnology ; Pollution ; Nigeria ; Zaria Dam ; Nigeria ; ABU Dam ; freshwater environment ; Physicochemical properties ; Pollution
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 144-146
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 23
    facet.materialart.
    Unknown
    Relationship among Tilapia guineensis fingerlings abundance and water quality variations in a brackish water reservoir in Lagos (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23442 | 19325 | 2018-05-02 08:28:15 | 23442 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: In recent times there has been an upsurge in the culture of Tilapia in Nigeria resulting in increased demand for the fingerlings which is hardly satisfied. This is due to increasing demand for table size tilapia as food fish and under-sized tilapia in the fish meal and fish canning industries in Nigeria. Collection of Tilapia guineensis fingerlings from the wild, to augment hatchery production, has been the practice and this is subject to environmental fluctuations. Multivariate regression and correlation analyses of accumulated data were used to investigate the effects of changes in water quality parameters on abundance of fingerlings of Tilapia guineensis in a brackishwater habitat in Lagos. Dissolved oxygen (DO), salinity and secchi transparency were found to be the most dominant factors affecting the abundance of Tilapia guineensis fingerlings in the Lagos lagoon. Peak period of abundance was closely associated with period of low salinity (0.50%o to 5.60%o), which coincided with the period of low transparency and low DO in the rainy season. The correlation analyses of Tilapia guineensis fingerlings with the water quality parameters yielded the following correlation coefficients (r)- 0.598; (salinity); -0.644 (transparency); -0.710 (DO); -0.566; (temperature) and 0.129 (pH). The abundance of Tilapia guineensis fingerlings in the Lagoon was ultimately defined by a suitable regression equation. This result is expected to optimize the collection of fingerlings of Tilapia guineensis from the wild and boost food fish security in Nigeria and elsewhere.
    Description: Includes:- 1 table.;1 fig.;( refs.
    Keywords: Chemistry ; Fisheries ; Tilapia guineensis ; Nigeria ; Port Harcourt ; brackishwater environment ; Water quality ; Fingerlings ; Chemical properties ; Physicochemical properties
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 153-157
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 24
    facet.materialart.
    Unknown
    Spatial and temporal variations of physicochemical variables in a small 'pristine' stream in Niger Delta, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23445 | 19325 | 2018-05-02 08:32:33 | 23445 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Spatial and temporal variations of physico-chemical variables of Onu-Iyi ?Ukwu stream were studied for 12 months from March 2005 to February 2006. Three sampling stations were established along the main stream channel from source to mouth. Spatial variation in physico-chemical parameters indicated that total alkalinity, total hardness, conductivity, and nitrate-nitrogen (NO3) recorded their highest values at the upper reaches (with values 14.0mg/l, 88.09mg/l, 17.00~kscmiscm, and 0.60mg/l respectively). Dissolved Oxygen (DO) and pH had their maximum values of 8.20mg/l and 6.94 at the middle reaches. Turbidity, biochemical oxygen demand (BOD), temperature and phosphate-phosphorus (PO4) increased steadily from source to mouth. The observed seasonal variation indicated that wet season values were higher for all the parameters except temperature, turbidity, phosphate-phosphorus (PO4) and total alkalinity although the values were not statistically significant at p〉0.05. The correlation coefficient (r) showed no significant relationships p〈0.05 between physico-chemical parameters except DO and BOD with correlation values of (0.75 and -0.54) respectively.
    Description: includes:- 2 tables.;1 fig.;17 refs.
    Keywords: Chemistry ; Limnology ; Nigeria ; Onu-Iyi-Uku Stream ; freshwater environment ; Physicochemical properties ; Phosphates ; Phosphorus ; Turbidity
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 174-180
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 25
    facet.materialart.
    Unknown
    Effects of locust bean (Parkia bigtobosa) effluent on the histology of Clarias gariepinus juveniles (Burchell 1822) (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23448 | 19325 | 2018-05-02 08:37:49 | 23448 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The poor nature of most Agricultural processing practices in Nigeria have had adverse effect on our environment, and our aquatic resources are of no exception. This study was conducted to ascertain the median lethal concentration of the effluent within the 96 hours period and also to ascertain the extent of damage on some of the histological characteristics of the Clarias gariepinus juveniles. Juveniles of the Clarias gariepinus (mean weight 30g) were exposed to varied concentrations of the locust bean effluent under the standard laboratory conditions. Data on mortality corresponding to the various concentrations were subjected to the probit and logit transformations and used to calculate the LC50 graphically. The result shows the toxicity of the locust bean effluent to Clarias gariepinus juveniles as 0.089mg/L (treatment 4) during the period of study. Exposure to both the acute and subletheal concentrations resulted in a number of physiological dysfunction of the test fish. Observation of the fish under the tests revealed unbalanced swimming patterns loss of reflex, rapid opercular movements and gasping for air. Histopathological examination of the gill and liver of the treated fish showed signs of damage, ranging from Hypoxia, lesions, necrosis, fibrosis cell stasis and hyperplasia at the sublethal levels.
    Description: Includes:- 2 tables.;1 fig.;22 refs.
    Keywords: Fisheries ; Pollution ; Clarias gariepinus ; Nigeria ; Parkia bigtobosa ; freshwater environment ; Toxicity ; Lethal effects ; Pollution ; Histology
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 189- 195
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 26
    facet.materialart.
    Unknown
    Limnological studies of Bosso dam and it's tributaries in Minna, Niger State, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23449 | 19325 | 2018-05-02 08:39:20 | 23449 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The physico-chemical parameters of Bosso Dam were analyzed weekly for a period of six (6) weeks from 29th October, 2009. In all, six (6) stations were identified within the dam. The physico-chemical parameters assessed were: temperature, dissolved oxygen, pH, alkalinity, hardness, conductivity and transparency. The results obtained from the analysis revealed slight variations in most parameters. There was no significant difference p〉0.05 in pH regardless of stations and weeks. But significant difference p〉0.05 were observed in dissolved oxygen, nitrate, temperature, conductivity, hardness, alkalinity, biological oxygen demand, transparency, in respect regard to stations. These variations could be due to influx of organic waste from surface run offs and inorganic waste deposited by man. The physico-chemical parameters observed, indicated that most of them fall with the recommended range or standard by the Federal Ministry of Environment
    Description: Includes:- 2 tables.;10 figs.;18 refs.
    Keywords: Chemistry ; Limnology ; Nigeria ; Bosso dam ; freshwater environment ; Physicochemical properties ; Chemical properties ; Physical properties ; Water properties
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 196-214
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 27
    facet.materialart.
    Unknown
    Fatty acid composition of catfish (Clarias gariepinus) viscera oil (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23502 | 19325 | 2018-05-07 12:25:41 | 23502 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The fatty acid composition of oil extracted from the viscera of African catfish, Clarias gariepinus caught from a fish farm in New Bussa was investigated with a view to prove their usefulness. A total of 20 fatty acids were obtained out of which five were identified. Lauric, Palmitic and Stearic acids were the main saturated and monounsaturated fatty acids respectively. The principal acids in the polyunsaturated group were Oleic and Linoleic acids. C. gariepinus viscera is constituted of polyunsaturated fatty acids which make it a valuable pharmaceutical raw material rather than waste.
    Description: Includes:- 1 table.;10 refs.
    Keywords: Fisheries ; Clarias gariepinus ; Nigeria ; New Bussa ; freshwater environment ; Fatty acids ; Polyunsaturated fatty acids ; Chemical properties
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 516-518
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 28
    facet.materialart.
    Unknown
    Lipid profile and blood by-products of deformed and healthy African mud catfish (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23507 | 19325 | 2018-05-08 15:28:31 | 23507 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Study was conducted to investigate lipid profile and metabolites in deformed (lost one or both pectoral fins) and healthy (both pectoral fins intact) African mud catfish C. gariepinus using three groups of adults male and female with a mean weight and standard length of 822.17~c 48.75g and 42.55~c.26cm respectively. The fish were allotted in replicates to 5000m capacity tanks based on the presence or absence of pectoral fins. 1mL blood was drawn from caudal peduncle of each fish by means of disposable sterile syringe and centrifuged at 1000rpm for 20min at 40C. Cholesterol and total protein were determined using the cholesterol FL (CT F400CH) and total protein (TP 0500CH) kits. Serum albumin and globulin concentrations were determined following methods described by Tietz (1995) and Buckley et al., (1976) while total serum bilirubin concentration was measured as outlined by AACC (American Association of Clinical Chemistry). Results indicate that male fish had relatively higher amount of triglyceride while female fish had higher amounts of cholesterol, reduction in globulin of the deformed fish, reduction in the concentrations of albumin in healthy fish, increase in total protein and globulin levels and high urea concentrations. No total bilurubin was detected in any of the fish sampled thus an indication of good liver function which means there was no liver dysfunction or liver damage in the fishes. It is evident therefore that abnormal fish can still perform better if they are given intense management because of the variability in their blood constituents with the normal fishes which is used to assess their health is minimal. Keywords: Blood, Cholesterol, Deformed, Healthy, C. gariepinus.
    Description: Includes:- 2 tables.;30 refs.
    Keywords: Fisheries ; Clarias gariepinus ; Nigeria ; Badagry ; freshwater environment ; Lipids ; Blood ; Cholesterol ; Metabolites
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 543-549
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 29
    facet.materialart.
    Unknown
    Haematological profile of blood of African catfish (Clarias gariepinus, Burchell 1822) fed sunflower and sesame meal based diets (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23506 | 19325 | 2018-05-07 12:32:20 | 23506 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The effect of substituting soybean meal with raw sunflower and sesame seed meal was evaluated using haematological indices of Clarias gariepinus fed the diets containing sunflower and sesame seed meal. Seven isonitrogeneous and isocaloric diets containing sunflower and sesame seed meal replacing soybean meal at a rate of 15, 30 and 45% were prepared. A diet without replacement of soybean meal served as control. The result of fish fed test diets showed significant (P〈0.05) difference over the fish fed control diet with respect to PCV and mean corpuscular volume (MCV). Fish fed control diet had the lowest Hb, PCV, WBC, RBC, MCV, MCHC, ESr. There was no significant difference (P〉0.05) in the fish fed control diet and test diets with respect to MCH, MCHC, ESr, Neutrophil, Monocytes, Eusinophils and Lymphocytes. Hence it can be concluded that the haemotological parameter of Clarias gariepinus is not significantly (P〉0.05) changed with increase dietary inclusion of raw sunflower and sesame seed meal.
    Description: Includes:- 4 tables.;22 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Akure ; freshwater environment ; Feeding experiments ; Fish culture ; Diets ; Nutritional requirements ; Haematology
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 536-542
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 30
    facet.materialart.
    Unknown
    Growth response of Clarias gariepinus (Burchell 1822) juveniles fed diets containing raw Mucuna utilis seed meal (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23505 | 19325 | 2018-05-07 12:31:00 | 23505 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Feeding trial was conducted in static water to assess the growth of Clarias gariepinus fingerlings fed different inclusion levels of Mucuna seed meal (MSM). Raw MSM was used at 10%, 20% and 30% inclusion levels and the performance of fish fed these diets was compared with the fish fed soybean-based diet which contained 40%protein. All diets were prepared to be isonitrogenous and isocaloric. A four by six factorial experiment with three replicates using ten fish each of average initial weight of 6.6g was carried out. Daily fish ration of five percent body weight was administered two times for twelve weeks. The specific growth rate (SGR) in diet 1 (control) was significantly (p〈0.05) higher than the other dietary groups and worsens as inclusion level increased similar trend was also observed in the food conversion ratio (FCR) and protein efficiency ratio (PER). The significantly lower growth performance of fish fed diets containing raw MSM might be due to the presence of anti-nutritional factors present raw MSM. The possibility of improving this trend through processing should be investigated.
    Description: Includes:- 3 tables.;14 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Osogbo ; freshwater environment ; Feeding experiments ; Fish culture ; Diets ; Growth rate
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 531-535
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 31
    facet.materialart.
    Unknown
    Growth of Clarias gariepinus juveniles fed five commercial feed (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23504 | 19325 | 2018-05-07 12:29:55 | 23504 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Clarias gariepinus juveniles 6.35 ~C 0.22 g weight were fed five different commercial diets for 105 days to determine growth rates. Diets were hand distributed in triplicate groups of 30 fish once daily. The diets used were Coppens, Multifeed, Eurogold, Vittal and Ajanla feeds. At the end of the experiment, the final mean weight for Coppens, Multifeed and Eurogold were 181.54 ~c 0.63 g, 179.92 ~c 0.95 g and 139.92 ~c 0.26 g respectively, while final mean weight for Vital and Ajanla were 110.11 ~c 0.23 g and 119.03 ~c 0.35 g respectively. The statistical analysis of the results showed that there were significant differences (P〈0.05) in the mean final weights. Also there was no significant difference (P〉0.05) in the mean final weight between Coppens and Multifeed. The specific growth rates (SGR) were 3.19% day-1 3.18 % day-1 and 2.94% day-1 for Coppens Multifeed and Eurogold respectively and 2.71% day-1 and 2.78% day-1 respectively for Ajanla and Vital. There were significant differences (P〈0.05) in SGR among treatments and no significant difference (P〉0.05) between SGR of Coppens and Multifeed. Based on these findings, it was concluded that feed with macronutrient combinations of 45% CP, 12% crude fat, crude fiber, 1.5%, Ash 9.5% promoted better growth rates in C. gariepinus juveniles as compared with other combinations.
    Description: Includes:- 2 tables.;21 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeriaa ; Port harcourt ; Feed trial ; Feed evaluation ; freshwater environment ; Feeding experiments ; Fish culture ; Feed efficiency ; Feed
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 526-530
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 32
    facet.materialart.
    Unknown
    Effects of replacement of fishmeal with palm grub (Oryctes rhinoceros Linnaeus, 1758) meal on the growth of Clarias gariepinus (Burchell, 1822) and Heterobranchus longifilis (Valenciennes, 1840) fingerlings (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23510 | 19325 | 2018-05-05 13:09:20 | 23510 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Clarias gariepinus (0.73 ~c 0.01g) and Heterobranchus longifilis fingerlings (0.67 ~c 0.01g) were fed five isonitrogenous diets of about 40% crude protein, with varying levels (0-100%) of palm grub meal for 12 weeks. At the end of the study, C. gariepinus and H. longifilis fingerlings fed 25% palm grub inclusion diet had the highest weight gain (5.30g and 4.05g respectively), relative (726.0% and 595.6%) and specific (1.09% and 1.00%) growth rates while those fed 100% palm grub inclusion diet showed least growth; weight gain (2.68g and 2.15g), relative (367.1% and 316.2%) and specific (0.80% and 0.45%) growth rates respectively. Food conversion and protein efficiency were also best in fingerlings fed 25% palm grub meal diet (0.70 and 1.35 for C. gariepinus; 0.75 and 1.35 for H. longifilis respectively) with decreasing efficiency as palm grub inclusion level increased in the diets. The differences in the growth and nutrient utilization of the fingerlings on the various diets were generally insignificant (p〉0.05) above 25% inclusion level of palm grub. The study showed that palm grub can be used to completely replace fish meal in mudcatfish diets. However, for optimal growth and nutrient utilization, 25% level of replacement of fish meal with palm grub meal is most adequate in C. gariepinus and H. longifilis fingerlings diets.
    Description: Includes:- 7 tables.;2 figs.;12 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Heterobranchus longifilis ; Oryctes rhinoceros ; Nigeria ; Ibadan ; freshwater environment ; Feeding experiments ; Growth rate ; Fish culture ; Diets
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 561-567
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 33
    facet.materialart.
    Unknown
    The use of hapa as an improved system for culturing of Clarias gariepinus fry (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24176 | 19325 | 2018-05-13 18:59:45 | 24176 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Fry management in aerated and non aerated aquarium and hapa system were determined in Fish Hatchery of Faculty of Agriculture, Shabu Lafia to assess condition factor, percentage survival rate, total body length and percentage weight gain. 200 hatchlings of Clarias.gariepinus fry were put into a 35 x 30 x 15cm aquarium with aerator and without aerator; hapa with aerator and hapa without aerator in 3 replicates. The hapas were made of brown colour plankton net. The fry were fed with 5% of their body weight with Artemia shell free four times daily for the period of sixteen days. Temperature(27.45 ~c 0.05~'C), pH (7.56 ~c 0.03); Dissolved oxygen (8.20 ~c 0.03 mg/L), total alkalinity (l5.36~c 0.03 mg/L) and Free carbon dioxide (4.30 ~c 0.03 mg/L) monitored in each of water quality parameter of the various treatments was not significantly different from each other. The Percentage weight gain (1117 and 1067), percentage survival rate (92.83 and 91.33), total body length(l.07 and 1.07cm) and condition factor (11.99 and 11.44) of C. gariepinus fry in hapa system (aerated and non aerated respectively) are significantly(p〈0.05) higher than those of aquarium in the study although they are not significantly different (P〉0.05) from each other. The use of hapa as an improved system for mass production of C. gariepinus fry is highly recommendable in the large body of water.
    Description: Includes: 1 table and 4 figure.;Also include: 7 references.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Nasarawa State ; Aquarium ; Aerator ; Fry ; Hatchlings ; Hapa ; Hapa ; freshwater environment ; Fish culture ; Freshwater fish ; Fry ; Hatcheries ; Condition factor ; Survival ; Length-weight relationships ; Aquaculture techniques ; Comparative studies ; Cage culture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 102-105
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 34
    facet.materialart.
    Unknown
    Effect of zinc on the distribution of major cations and anions in the muscle of the fresh water catfish Clarias gariepinus (Burchell, 1822) collected from Ebonyi River, South East Nigeria (2021)
    Lagos (Nigeria) | FISON
    In:  http://aquaticcommons.org/id/eprint/24214 | 19325 | 2018-05-19 06:50:34 | 24214 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The effect of zinc exposure evaluated during a four day exposure periods at 13.88ppm, 26.75ppm, 53.5ppm,107ppm and 214ppm to Clarias gariepinus sub-adults showed the 96h LC50 as 26.62ppm. The threshold value was 20.30ppm. The muscle of the exposed fish analyzed showed a significant decrease in all the major cations and anions (Na+, CL-, Ca2+ K+, Mg2+) at (p〈0.05). The research revealed that there was no total inhibition of uptake of the cations and anions and also that uptake of these metals, that is cations and anions (Na+,-CL-, Ca2+ K+, Mg2+) increased rapidly during the 24 hours and dropped at 48 hours and 72 hours and gradually increased at the end of 96 hours showing that it was time dependent. During exposure period, affected fish stood in upright position with their snouts above the water surface, gasping for air. Observation of the exposed fish showed that they were peeling of skin, increase in opercula movement, erratic swimming, quietness and finally death. This research therefore recommends that zinc should be applied appropriately at 26.30ppm to avoid death of fish, man and other aquatic organisms that are the chief consumer.
    Description: Includes: 13 references.
    Keywords: Pollution ; Fisheries ; Clarias gariepinus ; Nigeria ; Ebonyi State ; Ebonyi River ; Zinc ; Muscle ; Cations ; Anions ; Clarias gariepinus ; Zinc ; Freshwater fish ; Cations ; Pollution effects ; Trace metals ; Bioaccumulation ; Muscles ; Pollutants ; Anions ; River fisheries ; Lethal limits
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 240-242
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 35
    facet.materialart.
    Unknown
    Toxicity of unripe Ackee apple (Blighiasapida) fruit extract on Clarias gariepinus fingerlings (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24201 | 19325 | 2018-05-16 15:24:45 | 24201 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The study was conducted to determine the toxicity of unripe Ackee apple (Blighiasapida) fruit extract on catfish, Clarias gariepinus fingerlings using the 96-hour bioassay under laboratory condition. The LC50 was determined graphically as 3.00ppt. Mean mortality was 0, 40, 50, 70 and 80% in the concentrations of 0, 3.33, 3.47,3.60 and 3.73ppt. Statistical analysis of the results showed that there were significant differences (P〈0.05) on the effect of concentration. Mortality increased with increase in concentration of toxicant and duration of exposure. Clarias gariepinus showed erratic swimming pattern, loss of reflex which increased with increase in concentration. Histopathological changes were revealed in the gills, skin and heart of the fish. The gill structure was altered and there were moderate mucosal erosion. There were several lymphoid aggregations with fibrous connective tissue at the dermal and epidermal areas in the skin. The heart myofibre were diffusely disintegrated with edema between bundles.
    Description: Includes: 1 table and 7 plates.;Also includes: 8 references.
    Keywords: Health ; Aquaculture ; Clarias gariepinus ; Nigeria ; Ado-Ekiti ; Fruit Extract ; freshwater environment ; Toxicity ; Artificial feeding ; Food composition ; Chemical composition ; Histopathology ; Freshwater fish ; Fingerlings ; Toxicants ; Mortality ; Fish culture ; Controlled conditions ; Lethal limits
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 200-202
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 36
    facet.materialart.
    Unknown
    Gender and age blood parameters references in African catfish (Clarias gariepinus) cultured in earthen ponds during dry season in Ibadan metropolis, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24580 | 19325 | 2018-05-20 06:01:18 | 24580 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Blood analysis is important in fish health investigation and may be influenced by intrinsic and extrinsic factors. However difficulties exist in the use of blood analysis in the investigation of fish health due to the paucity of species specific, gender and age based reliable references. The current study therefore aims to determine some blood parameters in order to provide reliable references for dry season of the normal condition values of C. gariepinus, a widely cultured fish in Nigeria. This study involved random sampling of 900 C. gariepinus aged 4, 5 and 6 months from earthen pond for three years. Data obtained for blood parameters using standard method were analyzed using descriptive statistic, students'-test, one-way ANOVA level of significant set at p ~,0.05. Results showed the female had significantly (p ~,0.001) higher values than the males for each age bracket and the values increased sig nificantly (p 0~,.05) with increased in PCV. hemoglobin, RBC, WBC, total protein, potassium, sodium, Creatinine, ALT, AST and glucose. The females and males values at 4, 5 and 6 months old were PCV (32.14 ~c 0.19% vs 26.72 ~c 1.l2; 36.45 ~c 1.39% vs 32.33 ~c 1.46%; 40.83 ~c 0. 73% vs 35.01 ~c 0.08%.), total protein (3.98 ~c 0.16g/l vs 3.49 ~c 0.18g/l; 4.45 ~c 0.10g/l vs 4.33 ~c 0.04g/l). Lymphocytes, neutrophils, mono cytes and ESR values showed no stable trend in gender differences with increased age. In both the females and the males, lymphocytes decreased significantly (p ~,0.05) while neutrophils and monocytes increased significantly (p~,0.05) with increased age. ESR decreased significantly (P~, 0.05) in the males and non-significantly in the females with increase in age. It is hoped that these values obtained would serve as a reliable reference to enhance an appropriate intervention in the culture of C. gariepinus aged 4. 5 and 6 months in earthen pond which may be extrapolated for use in other culture systems.
    Description: Includes: 48 references.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Clarias gariepinus ; Gender ; Blood parameters ; Earthen pond ; Culture ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 56-64
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 37
    facet.materialart.
    Unknown
    Physico-chemical parameters of fish ponds as it affects fish production in Ado-Ekiti, Ekiti State, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24590 | 19325 | 2018-05-20 16:05:58 | 24590 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The water analysis of five selected ponds in Ado-Ekiti in Ekiti State, was carried out to determine their suitability for fish culture. Pa rameters analyzed were: Temperature, Turbidity, Carbon (IV) oxide, Alkalinity, Hardness, pH and Dissolved oxygen. Values for temperature ranged between 20.0~'C and 29.0~'C, Turbidity values were between 46.0-50.2cm, Carbon (IV) oxide: 11.5-12.2mg/litre; alkalinity: 100-120mg/liter; hardness: 110-200mg/litre; pH: 6.8-7.8 and dissolved oxygen: 5.8-6.8mg/liter. The values obtained were found to be within acceptable range for fish production.
    Description: Includes: 10 references.
    Keywords: Aquaculture ; Chemistry ; Nigeria ; Physico-chemical parameter ; Fish pond ; Ado-Ekiti ; Fish production ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 97-100
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 38
    facet.materialart.
    Unknown
    Prevalence of parasites in the gut lumen of farmed catfish Clarias gariepinus in Lagos and Ogun States (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24595 | 19325 | 2018-05-20 16:10:53 | 24595 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A cross-sectional study was conducted in four (4) different production systems in Lagos and Ogun States of South Western Nigeria beetween December,2012 and May 2013 to determine the effect of Culture systems and management practices on prevalence of parasites in the gut of farmed catfish (Clarias gariepinus). Information on pond type, water source, feeding practices and general pond management were also gathered through administration of fish disease sample collection from Water for the examination of physicochemical parameters, was collected from 40 fish ponds comprising earthen, concrete, water recirculatory and poorly managed systems across the two (2) States. Temperature, pH and ammonia were monitored using the recommended range by FAO as standard. Also 160 live farmed catfish, 80 from each state, 20 from five different ponds of each system with a minimum of 4 live fish per system was collected, dissected and examined under the microscope for parasite load of the gut of C. gariepinus. The earthen, concrete and water recirculatory systems had good management practices compared to the poorly managed systems. The observed water physicochemical parameters in ponds with good management were within normal range. Five groups of parasites were observed; Protozoa (Eimeria spp), Cestodes (Bothriocephalus spp., Diphyllodium spp), Monogea (Enterogyrus spp), and copepods (Argasilus spp) and Nematodes (Procamallanus spp). Analysis of variance between location and System showed level of no significance (p〈 0.05). The interaction effect of location (State) and production system on parasite load of C. gariepinus also was not significant (p〉0.05). However interaction hetween Ogun and poorly managed system has the highest number of parasites (11.5), followed by Lagos (7.0). The systems with good management practice had low number of parasites with water recirculatory system recording the least number of parasites (0.5). Analysis of association between temperature, ammonia, and pH in all the cultured systems showed a significant level of correlation (p〈0.05). In this study, poorly managed systems especially where farmed fish received water directly from rivers and streams predispose fish to parasite infection of the gut. Good water quality management and proper fish husbandry techniques will eliminate most parasitic infection and improve on fish production.
    Description: Includes: 11 references.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Parasite ; Water recirculatory system ; C. gariepinus ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 114-118
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 39
    facet.materialart.
    Unknown
    Effect of feeding frequency on growth and survival rate of Clarias gariepinus fingerlings reared in plastic bowls (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24586 | 19325 | 2018-05-20 16:00:00 | 24586 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The effects of feeding frequency on feed intake, growth and survival rates were determined in C. gariepinus. Twenty fish per tank (bowl) were stocked in triplicate. They were fed once (1D), thrice (3D) and five times daily (5D) respectively. The 5D group growth rates were observed significantly different (P〈 0.05) from fish fed on 1 (1D) and (3D) feeding frequency. All the treatments containing 1D, 3D and 5D were observed to have significant difference (P〉 0.05) in terms of final weight (FW). There was also a noticeable increased trend in final weight (5D 〉 3D 〉 7D). Feed conversion ratio (FCR) of 3D and 5D treatments were higher than 1 D) treatment (P〈 0.05). According to the results, feeding C. gariepinus 1 time daily (1D) did not influence the growth; however, 5 times daily reduced mortality and improved the feed conversion ratio (FCR) of C. gariepinus.
    Description: Includes: 9 references〉
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Feeding frequency ; Feed convertion ratio ; Growth ; Survival rate ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 84-86
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 40
    facet.materialart.
    Unknown
    Efficiency of different traps for silver catfish fishery and its aquaculture implications in the face of climate change (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24601 | 19325 | 2018-05-21 12:17:22 | 24601 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Climate change has the potential to severely impact coastal and inland environments and ecosystems, and by extension fisheries and aquaculture. Coastal regions of the world are already experiencing flooding due to rise in sea level. In recent times, salinization of coastal areas due to flooding from storm surges and high tidal influence has been observed. Aquaculture is a fast growing agri-business venture in Nigeria presently and many coastal communities derive their livelihood from it. The culture of freshwater fish species that are very sensitive to high salinity may be threatened leading to mortality of stocked fish and loss of livelihood for coastal population. Consequently, there is urgent need for development and domestication of the Silver catfish, Chrysichthys nigrodigitatus that can tolerate higher salinity more than Mudcatfish (Clarias gariepinus). This will help mitigate the impact of salinization of coastal areas arising from sea water flooding on culture of fresh water fish species.
    Description: Includes: 17 references.
    Keywords: Aquaculture ; Pollution ; Fisheries ; Chrysichthys nigrodigitatus ; Clarias gariepinus ; Nigeria ; Climate change ; Silver catfish ; Chrysichthys nigrodigitatus ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 137-139
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 41
    facet.materialart.
    Unknown
    Effect of sublethal concentrations of formalin on the growth of Clarias gariepinus fingerlings (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24611 | 19325 | 2018-05-22 05:58:34 | 24611 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Fingerlings of Ciarias gariepinus were exposed to various sublethal concentrations (10.0, 20.0, 30.0. 40.0, 50.0 and 60.0 ~KL/L) formalin and the concentration of 0.0 ~KL/L formalin served as the control. The toxicant led to depressed weight gain in the fish. Severity of this depression was directly proportional to the toxicant concentrations. However, there was no difference (p〉0.05) in weight gain in test fish of various concentrations. Restlessness, loss of balance, erratic swimming behavior, respiratory distress, vertical movement and death, were observed in test media especially in the concentrations 60.0 and 50.0~Kl/L of formalin. Such observation were not recorded in the control tanks.
    Description: Includes: 9 references.
    Keywords: Aquaculture ; Pollution ; Clarias gariepinus ; Nigeria ; Clarias gariepinus ; Formalin ; Concentration ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 176-178
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 42
    facet.materialart.
    Unknown
    Effects of sub-lethal concentrations of glyphosate on behaviour and some biochemical parameters of African catfish (Clarias gariepinus) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24614 | 19325 | 2018-05-24 09:35:20 | 24614 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The sub-lethal effect of glyphosate on behavior and some biochemical parameters of African catfish, Clarias gariepinus were investigated using static renewal bioassays and continuous aeration for a period of 28 days using varying concentrations (100ppm, 200ppm, 300ppm, 400ppm and 500ppm). During the exposure period, the fish showed different abnormal behaviours such as restlessness, loss of balance, respiratory distress, grouping together, darting movements, loss of equilibrium, mucous secretion and erratic swimming. At the end of the experiments, the fish were sacrificed and the blood samples were collected. The gill and liver of the fish were removed from biochemical bioassay. Compared with the control, the result showed a significant increase (P〈0.05) in the activities of alanine amino transferase (ALT), and aspartate amino transferase (AST), in both the blood and the gill of exposed fish except in liver where it showed a significant reduction. However the values of lactate dehydrogenase (LDH) and superoxide dismutase (SOD), showed significant increase in the blood with a noticeable decrease in both the gill and liver of exposed fish. The study showed that sub-lethal concentratiom of glyphosate are harmful to Clarias gariepinus. This study shows that sub-lethal concentrations of glyphosate is harmful to Claria gariepinus. The implication of these results in rational exploitation and conservation of fishery resources and the public health risk consuming glyphosate-exposed to fish are highlighted.
    Description: Includes: 22 references.
    Keywords: Fisheries ; Pollution ; Clarias gariepinus ; Nigeria ; Glyphosate ; sub-lethal ; Biochemical ; Conservation ; Public health ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 188-191
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 43
    facet.materialart.
    Unknown
    Effects of spices on the chemical properties of hot-smoked catfish (Clarias gariepinus) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24673 | 19325 | 2018-05-24 09:33:52 | 24673 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Effect of spices on the chemical properties of hot-smoked catfish (C.gariepinus) was examined. The experimental design was complete randomized design (CRD) with the treatments been the variously spiced hot-smoked catfish (garlic, ginger, garlic-ginger homogenate spiced and the control without spices). Proximate and mineral content analyses were carried out using standard experimental procedures. There exist significant differences (p〈0.05) in the percentage moisture and crude protein content with smoked catfish without spices having the highest moisture content with mean value 6.18 ~c 0.13 and 79.44 ~c 0.13 respectively which could be as a result of the increase in the fibre content of the spiced fish products which is a function of fibre content of the spices applied to the fish products. Similar trend was also observed for the lipid and ash contents the fish products. There exist significant differences (p〈0.05) in the mineral content preseent in the various fish products with the exception of magnesium. The products are rich in calcium and other minerals with garlic-ginger homogenate spiced product having the highest level of calcium (0.980 ~c 0.02).
    Description: Includes: 25 references.
    Keywords: Fisheries ; Clarias gariepinus ; Nigeria ; Spices ; Organoleptic properties ; Chemical properties ; Hot-smoked ; C. gariepinus ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 435-438
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 44
    facet.materialart.
    Unknown
    Growth performance of Clarias gariepinus fingerlings fed diets with graded levels of yeast (Saccharomyces cerevisiae) used as a floater additive in concrete tanks (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24159 | 19325 | 2018-05-13 13:04:38 | 24159 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Completely randomized design with duplicate groups were used to study the growth performance of 400 fingerlings of Clarias gariepinus in 2m x 2m x 1m concrete tanks in an out-door hatchery complex of National Institute for Freshwater Fisheries Research (NIFFR), New Bussa, Niger State, Nigeria. Graded levels (0, 1,2,3 or 4) % of yeast (Saccharomyces cerevisiae) was included into a 40% crude protein (C.P) NIFFR floating basal diet and fed to Clarias gariepinus in tanks for 16 weeks and 35% in the last 4 weeks. This was to determine the optimum level of supplemental yeast inclusion as a floater additive into diets of C. gariepinus and to quantify feed and its cost for raising a kilogram of the fish fed diets. The experiment was geared towards development of cost effective standard floating feed for Clarias gariepinus. There was no significant difference in weight gain (WG), feed consumed (FC), specific growth rate (SGR), survival, cost of feed consumed (CFC) and palatability test of flesh (P〉0.05) except FCR (P〈0.05) and feed cost per kilogram of fish (P〈0.05) at the end of 8 and 20 weeks. There was no histopathological defect observed on the fish and fish carcass. It was concluded that 2% or 1 % level of yeast can be included in NIFFR floating feed with the assurance of producing a kilogram of C. gariepinus with a feed of N300.00 under good management practices based on ingredient ruling price at the time of this study and this might be capable of increasing farmer's income in fish production.
    Description: Includes: 1 table and 2 figures.;Also includes: 21 references.
    Keywords: Aquaculture ; Ecology ; Clarias gariepinus ; Nigeria ; Niger ; Yeast ; Floating additives ; Performance ; Clarias gariepinus ; freshwater environment ; Growth rate ; Freshwater fish ; Fingerlings ; Artificial feeding ; Feeding experiments ; Feed ; Yeasts ; Additives ; Culture tanks ; Cost analysis ; Performance assessment ; Fish culture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 32-36
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 45
    facet.materialart.
    Unknown
    Growth performance and nutrient utilization of post fingerlings Clarias gariepinus fed varied levels of biscuit waste (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24162 | 19325 | 2018-05-13 13:15:18 | 24162 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A feeding trial was conducted to determine the effect of biscuit waste meal on the growth performance and utilization of Clarias gariepinus juveniles. A total of 300 juveniles of average weight 8.85g were randomly divided into 5 Treatments, each with three replicates. Twenty juveniles were distributed into fifteen happas (0.7m3) and each happa was suspended to 3/4 of its volume using kuralon ropes carefully tied round the bamboo poles across the concrete tanks. Five diets containing 40% crude protein were formulated in which maize was replaced with biscuit waste meal at Treatment diet 1 (TD1) 0%, 25% (TD2), 50% (TD3), 75% (TD4), 100% (TD5) levels.The juveniles were fed at 3% body weight per day for 10 weeks. It was recorded at the end of the experiment that biscuit waste was most suitable as an energy supplement when incorporated at 25% replacement (TD2) with maize. TD1 had the highest weight gain followed by TD2, TD3, TD4 and TD5 respectively. There were no significant differences (P〉0.05) in the growth response in TD1 (0%), T0D (25%) and TD3 (50%). It is therefore concluded that biscuit waste meal is a cheap source of non conventional energy source which can be used favorably to replace maize (25% inclusion level) as an energy source in the diets of Clarias gariepinus.
    Description: Includes: 7 tables.;Also includes: 15 references.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Abeokuta ; Treatment ; Biscuit waste ; Net hapa ; Juvenile ; Crude protein ; freshwater environment ; Growth rate ; Nutrition ; Freshwater fish ; Fingerlings ; Diets ; Wastes ; Feed ; Feeding experiments ; Fish culture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 45-50
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 46
    facet.materialart.
    Unknown
    Assessment of water quality in Kigera Fish Farm, New Bussa (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23017 | 19325 | 2018-03-05 09:26:57 | 23017 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: The physico-chemical and biological characteristics and nutrient concentration of Kigera Fish Farm ponds were monitored for two months to assess the water quality. The parameters measured were dissolved oxygen, temperature, hydrogen ion concentration, Secchi-disc transparency and zooplankton composition. Some fish species were identified in the course of study. Temperature ranged from 26 -30degreesC; dissolved oxygen ranged from 3mg/l-6.6mg/l, pH ranged 7.0 -7.2; while Secchi-disc transparency ranged from 0.19 - 0.25m. The three ponds were quite similar in these parameters. All the parameters that were investigated in this study are within the tolerable level for warm water fishes. Five different zooplankton species were identified at the Kigera Fish Farm, and were grouped according to their major categories namely: Copepods, Cyclopoids and Copepodite), Cladoceran (〈i〉Moina〈/i〉), and Rotifera (〈i〉Asplanchina〈/i〉). 〈i〉Branchionus〈/i〉 species in the Rotifers group dominated the zooplankton species in all the three ponds.
    Description: includes:- 5 tables.;7 refs.
    Keywords: Aquaculture ; Chemistry ; Nigeria ; Kigaria Dam ; freshwater environment ; Water quality ; Physicochemical properties ; Zooplankton
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 199 - 205
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 47
    facet.materialart.
    Unknown
    Honey comb potentialities as growth promoter and preservator in Clarias gariepinus diets (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23024 | 19325 | 2018-03-05 09:10:54 | 23024 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: Honey comb was involved as floating additive in fish diets at 0, 4 and 8% levels in 30% crude protein Clarias gariepinus juveniles of mean weight 30.30~c0.05g for 56 days in aquaria each measuring 60 x 30 x 30cm. Within six weeks all stages of grain weevils Oritzaphillus mecartus were associated with the honey comb diets, while those with honey comb remained as kept. Feed and fish values were better in honey comb diets. The growth, food utilization indices; feed and fish values were significantly (P〈O.05) higher in honey comb diets. Bee keeping for income and honey comb usage in fish diets were suggested to fish farmers.
    Description: Includes: 3 tables.;1 fig.;22 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; freshwater environment ; Diets ; Feed composition ; Feed preparation ; Floating ; Fish culture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 240 - 244
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 48
    facet.materialart.
    Unknown
    The effects of dichlorvos (2, 2 - dichlorovinyl phosphate (DDVP)) induced stress on the growth of fingerlings of Clarias gariepinus (Burchell, 1822) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24165 | 19325 | 2018-05-13 13:30:18 | 24165 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This study was conducted to determine the effects of dichlorvos ~9 2, 2 - dichlorovinyl dimethyl phosphate (DDVP)~0 on the growth of Clarias gariepinus fingerlings. The experiment was conducted in two phases: the first phase involved the exposure of the fish to different concentrations ~9 0.00 (control), 0.4ppm, 0.5ppm, 0.6ppm, 0.7ppm, 0.8ppm, 0.9ppm, 1.0ppm, 1.1 ppm and 1.2ppm~0 of dichlorvos for four days. The second phase was a recovery process in which the fish that survived from the first phase were introduced into clean, dechlorinated, toxicant-free water and were fed at 3% of their body weight for 12 weeks. The change in weight was measured every fortnight and the feed fed was adjusted to accommodate the change in weight. The highest values for weight gain, percentage weight gain, specific growth rate and average daily weight gain occurred in the control and these values were significantly (p〈0.05) higher than the values of these parameters recorded in the other treatments. The range of values of weight gain, percentage weight gain, specific growth rate and average daily weight gain are 6.76 ~c 3.01-18.45 ~c 8.90g, 69.45 ~c 18.52 - 105.52 ~c 33.67%, 1.54 ~c 0.33 - 2.08 ~c 0.46%/day and 0.48 ~c 0.21 - 1.21 ~c 0.65g respectively. Based on the results of this study, the exposure of fingerlings of Clarias gariepinus to dichlorvos ~9 2, 2- dichlorovinyl dimethyl phosphate (DDVP)~0 affected the growth of the fish. Therefore, the use of dichlorvos on stored grains should be regulated because uncontrolled usage could cause mortality and impairment of growth in fish if the pesticide gets washed into water bodies inhabited by fish.
    Description: Includes: 1 table.;Also includes: 9 references.
    Keywords: Aquaculture ; Ecology ; Pollution ; Clarias gariepinus ; Nigeria ; Lagos State ; Toxicity ; Pesticide ; Clarias gariepinus ; Growth performance ; freshwater environment ; Freshwater fish ; Fingerlings ; Toxicants ; Pesticides ; Toxicity ; Bioaccumulation ; Feeding ; Growth rate ; Pollution effects
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 57-59
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 49
    facet.materialart.
    Unknown
    Acute toxicity of 2, 3-dichlorovinyl dimethyl phosphate (Sniper 1000EC) and response of Clarias gariepinus Burchell under laboratory conditions (2021)
    Lagos (Nigeria) | FISON
    In:  http://aquaticcommons.org/id/eprint/24215 | 19325 | 2018-05-19 06:53:11 | 24215 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The study investigated the acute toxicity of 2, 3-dicholrovinyl dimethyl phosphate (Sniper 1000EC) on the African mud catfish, Clarias gariepinus juveniles (mean weight 19.47 ~c 1.05g) using static bioassay method. Sniper 1000EC is an organophosphate pesticide. Each treatment in the acute test was in triplicate with bioassay media concentration of 0,5, 10, 15 and 20 mg/l. Data on mortalities of fish, water physic-chemical parameters as well as changes in haematological indices were subjected to one way analysis of variance (ANOVA) at 5% probability level. Duncan multiple range test was used to separate differences between the means. The 96hr LC50 estimated by probit analysis during the exposure was found to be 8.20mg/l. Behavioural abnormalities of the exposed fish included erratic and uncoordinated swimming and bleached skin with lesion at the highest concentration (20mg/l). Blood dyscrasias attributable to the toxicant was observed with a significant (p〈0.05) decrease in haemoglobin, haematocrit, red blood cells, white blood cells, lymphocytes and monocytes. Mean corpuscular volume (MCV), Mean corpuscular haemoglobin (MCH), neutrophils, eosinophil and basophil increased significantly (p〈0.05) with increasing concentrations of the toxicant. These abnormalities in body and blood parameters as a result of exposure to the toxicant make the study to recommend that the use of Sniper 1000EC by local fishermen be banned to preserve aquatic lives in Nigerian inland water bodies.
    Description: Includes: 22 references.
    Keywords: Fisheries ; Pollution ; Clarias gariepinus ; Nigeria ; Niger State ; Sniper 1000EC ; Clarias gariepinus ; Toxicity ; Haematological indeces ; freshwater environment ; Toxicity ; Phosphate deposits ; Response analysis ; Freshwater fish ; Juveniles ; Bioassays ; Toxicity tests ; Physicochemical properties ; Controlled conditions ; Haematology ; Pollution monitoring
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 250-253
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 50
    facet.materialart.
    Unknown
    Growth performance of wild strains of Clarias gariepinus from Nigerian waters (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24581 | 19325 | 2018-05-20 06:03:14 | 24581 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The catfish (Clarias gariepinus) is the leading aquatic crop in Nigeria. Most of the strains used in aquaculture are suffering from in-breeding depression with its attendant poor egg and sperm quality. There is therefore the need to explore the natural population of the fish to improve performance. This study was carried out to evaluate the growth performance of strains of the catfish across the fresh water systems of Nigeria. Collections were made from the six geopolitical zones namely: North-Central (Kogi), Northeast (Adamawa), Northwest (Kebbi), South-West (Oyo), Southeast (Anambra), South-South (Delta) and domesticated strain obtained from Lagos. The fish were bred in the wet laboratory of the Department of Fish Technology/Biotechnology of the Institute for Oceanography and Marine Research, Lagos and fed for 12 weeks before subjected to growth study. The study involved allocation of 25 juveniles of each strain in lm hapas installed in a 0.4 ha at Badore fish farm, Lagos, Nigeria,fed 3% body weight twice daily while sampling forth-nightly. The results showed that the domesticated strain of C. gariepinus performed significantly better (a=0.05) than the six wild strains studied. This may be attributable to selective breeding which probably had been carried out by the farmers from which the broodstocks were purchased and mixture of the gene pool of improved Dutch strain commonly cultured. There was however no significant variation in the SGR and FCR among the strain. However, the growth study showed that the strain from North-West (Kebbi) did not perform as much as other strains in terms of these growth indices. Hoewever, it had the highest survival (96%). The strains from Oyo and Anambra however showed better growth over the rest strains from the wild. The implication of the breeding potentials of C. geriepinus strains from Kebbi, Oyo and Anambra is that if several selective breeding of these strains are carried out and the gene pool of Kebhi is combined with any of these two, we are likely to obtain fish seed of better growth and survival.
    Description: Includes: 14 references.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Growth ; Performance ; C. gariepinus ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 65-67
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 51
    facet.materialart.
    Unknown
    Survey of physical characteristics of the upper reaches of new Calabar River, Niger Delta, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24618 | 19325 | 2018-05-22 06:12:36 | 24618 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: One of the priority research projects of the Nigerian Institute for Oceanography and Marine Research (NIOMR) is broodstock development and mass propagation of silver catfish, Chrysichthys nigrodigitatus of which the broodstock is naturally abundant in New Gala River. Selected physical characteristics and water physico-chemical parameters of the upper reach of the New Calabar River at Aluu were investigated. The highest depth value of 9.20 m was recorded in the middle of the river. The width of the river measured during spring high tide and low tide were 174 m and 110 m respectively. The cross-sectional area and average flow velocity of the river were 797.13 m2 and 0.374 m/s respectively. The discharge of the river was computed as 298.13m3/s. The river water was acidic most of the period (Hydrogen ion concentration, pH: 5.12 to 7.43), with low total alkalinity values (4.00 to 12.00 mgCaCO3/L) and low total hardness values (11.5 to 51.2 mgCaCO3/L) which indicate that the river water is black and soft. There was significant (p~,0.05) seasonal variation in temperature (23.1 to 31.7~'C\}, Secchi transparency (9.30 to 19.00 cm), total hardness (11.5 to 51.2 mgCaCO3/L), dissolved oxygen (5.20 to 7.50 mg/L) and dissolved oxygen deficit (0.02 to 2.95mg/L). These results are useful for several stake holders who use the river as a sink for trade wastes, as source of water for fish farming, as source of broodstocks of Chrysichthys nigrodigitatus, as raw water for water treatment plants, and as means of transportation of industrial materials.
    Description: Includes: 16 references.
    Keywords: Chemistry ; Fisheries ; Limnology ; Chrysichthys nigrodigitatus ; Nigeria ; New Calabar River ; New calabar River ; Physical characteristics and physico-chemical features ; Seasonal variation ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 206-210
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 52
    facet.materialart.
    Unknown
    Physico-chemical parameters in relation to fish production of Dadin Kowa Dam, Gombe State, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24619 | 19325 | 2018-05-22 06:14:16 | 24619 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Eight month physicochemical study of Dadin Kowa Dam was carried out forthnightly from July, 2011 to february 2012. Air temperature ranged from 18.25~'C ~c 28~'C ~c 0.50 to 28~'C ~c 2.16. Water tmperature ranged from 18.75~'C ~c 2.21. Transparency ranged from 11.00cm ~c 1.83 to 29.63 cm ~c ~c 2.14. Conductivity ranged from 13.00~Ks/cm ~c 13.33 to 41.38~Ks/cm ~c 5.54. Hydrogen ion (pH) ranged from 6.69 ~c 1.03 to 8.39 ~c 1.17. Dissolved oxygen ranged from 6.39mg/l ~c 1.03 to 10.14mg/l ~c 1.17. Total alkalinity ranged from o.69mg/l ~c 0.38 1.34mb/l ~c 0.02. Total ammonia ranged from 0.20mg/l ~c 0.027 to 0.83mg/l ~c 0.05. There were various levels of correlation between these parameters. There was no significant difference between both sites and months (p〉0.05) of all the parameters except total nitrogen which show a significant difference between the sites (p〈0.05) and transparency also shows a significance between the months (p〈0.05). All physicochemical parameters were almost within the tolerable limits for supporting aquatic life.
    Description: Includes: 27 references.
    Keywords: Fisheries ; Chemistry ; Nigeria ; Dadin Kowa Dam ; Physico-chemical parameters ; Fish production ; Dadin Kowa Dam ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 211-213
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 53
    facet.materialart.
    Unknown
    Evaluation of protein fractions of indigenous clariid fish species (Clarias gariepinus and Heterobranchus bidorsalis) and their reciprocal hybrids (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24624 | 19325 | 2018-05-22 06:22:00 | 24624 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Electrophoresis of Myofibrillar and Sarcoplasmic muscle proteins of African catfish, Clarias gariepinus, Heterobranchus bidosalis and their reciprocal hybrids in South-West Nigeria was carried out to reveal the similarities and dissimilarities among species in other to aid the selection of suitable strains for aquaculture that could lead to production of new varieties of fishes to alleviate the problem of short supply of fast growing quality fish seeds. The study was aimed at analyzing the muscle protein profiles of C. gariepinus, H. bidor salis and their reciprocal hybrids. Sixteen juveniles fish samples (comprising four samples from each mating combinations) artificially propagated and reared for sixteen weeks were analyzed eleclrophorelically. Myofibrillar and sarcoplasmic fractions were prepared by homogenizing 150mg of fish muscle in 1.5ml of rigor buffer containing 10mM Trismeleates, 60 mM K Cl, 5mM MgCl〈sub〉2〈/sub〉 1nM EDTA. Extracts were centrifuged in a tube at l0,000g for 5 min at 4~'C. The resultant pellets (myofibrilla) and supernatant (sarcoplasmic) separated using 12.5% Sodium Dodecyl-Sulphate Polyacrylamide Gel Electrophoresis (1D SDS-PAGE). The relative concentration of individual protein bands were analyzed using Tota/Lab?1D software. The individual protein bands in the electrophoregram were identified in relation to their molecular weights. A total of eleven and seven protein bands were resolved in Myofibrilla and Sarcoplasmic fractions respectively. The 5th band with molecular weight (MW) of 52.23 KDa of the myofibrilla electrophoregram distinguished C. gariepinus from H. bidorsalis while the 3rd band with MW 119.04, 4th band with MWs 101.49 & 102.13; 8th band with MWs 29.24 and 29.39 KDa distinct the pure breeds from the hybrids. However, in sarcoplasmic fraction, the 3rd and 5th bands with MWs 92.11 KDa and 54.28 KDa respectively distinguished the hybrids in the while the 7th band with MW 41.67 KDa distinct the pure breeds. Therefore, this research will serve as a bridge between the existing gaps of information available on the muscle protein profile of C. gariepinus, H. bidorsalis and their reciprocal hybrids and the study identifies the proteomic classification of Clariid species with the aim of enlightening fish researchers and aquacullurists on the characterization of broodstock selection for successful breeding exercise.
    Description: Includes: 18 references.
    Keywords: Aquaculture ; Clarias gariepinus ; Heterobranchus bidorsalis ; Nigeria ; Myofibrilla ; Sarcoplasmic ; Rigor buffer ; C. gariepinus and Heterobranchus bidorsalis ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 228-232
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 54
    facet.materialart.
    Unknown
    Protein profile expression of Clarias gariepinus, Heterobranchus bidorsalis and their reciprocal hybrids in Southwest Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24623 | 19325 | 2018-05-22 06:20:02 | 24623 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Proper genetic characterization would help in the selection of suitable strains for aquaculture that could lead to production of varieties of fishes to alleviate the problem of short supply of fast growing quality fish seeds. The study was aimed at analyzing the muscle protein profiles of Clarias gariepinus, Heterobranchus bidorsalis and their reciprocal hybrids. Sixteen juveniles fish samples (comprising four samples from each mating combinations) artificially propagated and reared for sixteen weeks were analyzed electrophoreti cally. The separation of the different polypeptides of C. gariepinus, H. bidorsalis and their reciprocal hybrid were carried out using 12% Sodium dodecyl, sulphate polyacrylamide gel electrophoresis (JD SDS-PAGE). The relative concentration of individual protein bands were analyzed using Total Lab〈sup〉TM〈/sup〉 ID software. The individual protein bands in the electrophoregram were identified in relation to their molecular weights. The gel images obtained after electrophoresis were scored and subjected to cluster analysis. The lst, 2nd, 4th, 8th, 9th, 10th, and l1th bands were detected across all mating combinations. The 5th band with molecular weight (78.58 distinguishes C. gariepinus from H. bidorsalis while the 6th band with molecular weight (54.41 KDa) distincts the reciprocal hybrid Clariabranchus from Heteroclarias. The 7th and 12th bands distinguished the pure breeds from the hybrids. The 7th band was present in both hybrids-Clariabranchus (49.50 KDa) and Heteroclarias (49.77 KDa) species but absent in the pure breeds while 12th was present in the pure breeds-C. gariepinus (19.92 KDa) and H. bidorsalis (20.29 KDa) but absent in the hybrids. The cluster analysis shows a high level of genetic similarity among the mating combinations which affirms the already established monophylogenetic relatedness among the species.
    Description: Includes: 18 references.
    Keywords: Aquaculture ; Clarias gariepinus ; Heterobranchus bidorsalis ; Nigeria ; Electrophoregram ; Protein profile ; Clarias gariepinus ; Heterobranchus bidorsalis ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 224-227
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 55
    facet.materialart.
    Unknown
    Impact of feeding diets containing Luffa cylindrica seedmeal on the variable cost of production of African catfish, Clarias gariepinus (Burchell 1822) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24157 | 19325 | 2018-05-13 13:00:52 | 24157 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This study investigates the use of Luffa cylindrica seed meal as soybean replacer in the diet of Clarias gariepinus. Five isonitrogenous diets containing soybean meal which was replaced by Luffa cylindrica at a rate of 0, 15,30,45 and 60% were made. The diets without Luffa cylindrical seed meal served as the control. Experimental diets were assigned randomly to the tanks and each group of fish was fed 5% body weight in equal proportion per day. The fish fed diet 1 had the highest incidence of cost, while the fish fed diet 4 had the lowest incidence of cost. There was no significant difference (P〉0.05) in the incidence of cost of producing 1kg fish with the different dietary treatments. The fish fed at diet 4 had the highest profit, while the fish fed at diet 1 had the lowest profit. There was no significant difference (P〉0.05) in the profit margin of producing 1kg fish with the different dietary treatments. The incidence of cost showed that it was cheaper to produce 1kg of fish with Luffa cylindrical seed meal because feeding the fish with the diet (control and tests diets) left some profit margin.
    Description: Includes: 5 tables.;Also includes: 18 references.
    Keywords: Aquaculture ; Ecology ; Clarias gariepinus ; Nigeria ; Ogun State ; freshwater environment ; Diets ; Freshwater fish ; Artificial feeding ; Feeding experiments ; Fish culture ; Production cost
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 24-27
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 56
    facet.materialart.
    Unknown
    Effects of partial and total replacement of soyabean meal with pigeon pea (Cajanus cajan) as alternative plant protein source in the diet of juvenile African mud catfish (Clarias gariepinus) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24160 | 19325 | 2018-05-13 13:07:24 | 24160 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A 56-day feeding trial to investigate the effects of feeding varying levels of substituted Soybeam meal (SBL) with Pigeon pea seed meal (PSM) on the performance and carcass characteristics of Clarias gariepinus was conducted. Five isonitrogenous 40% crude protein diets were formulated where PSM Clarias gariepinus (15.74 ~c 1.22g) stocked at 15 fish/50 litres tanks were fed diets in triplicates twice daily to satiation and weight changes recorded weekly. Fish fed diet with 25% and 100% PSM inclusion gave the highest mean weight gain of 25.47g and 23.34g respectively (P〉0.05). There were no significant difference (P〉0.05) among the weight gain of other treatments. Fish fed diet containing 0% SBM and 100% PSM gave the highest gross food conversion efficiency and percentage weight gain of 43.50g and 12.l8g while fish fed diet containing 50% SBM and 50% PSM had the lowest of 35.67 and 9.99 respectively with no significant changes compared with other treatments. For good growth, fish farmers are advised to consider Pigeon pea seed meal either as a partial (25%) or total replacement (100%) for soybean meal in the diet of Clarias gariepinus juveniles.
    Description: Includes: 5 tables.;Also includes: 19 references.
    Keywords: Aquaculture ; Ecology ; Clarias gariepinus ; Nigeria ; Lagos ; Soyameal ; Pigeon pea ; Clarias gariepinus ; Protein source ; freshwater environment ; Diets ; Freshwater fish ; Artificial feeding ; Feeding experiments ; Proteins ; Juveniles ; Feed efficiency ; Growth rate
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 37-40
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 57
    facet.materialart.
    Unknown
    The effect of feeding regime and rate on the growth of Clarias gariepinus (Burchell, 1822) fingerlings fed with artificial feed (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24163 | 19325 | 2018-05-26 12:00:29 | 24163 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Fish growth is a function of adequate supply of feed in the right quantity and time. The effect of feeding rate on the growth of Clarias gariepinus (Burchell, 1822) was studied for a period of 22 weeks. The fish were fed at the same percentage body weight throughout the study period and a bi-weekly weight gain was measured. Water quality parameters were also monitored. There was a significant increase in weight gain in daily feeding regime than in the ones in two days feeding regime. The increase in weight for the daily feeding regime was visible as from the 8th week while that for the ones in two days feeding was only significantly different in 22nd week at 0.05 level of significance. The relationship between the two feeding regime types also revealed that the daily feeding performed better than the ones in two days feeding regime.
    Description: Includes: 2 tables.;Also includes: 10 references.
    Keywords: Aquaculture ; Pollution ; Ecology ; Clarias gariepinus ; Nigeria ; Niger ; Feed ; Fish growth ; Feeding regime and weight gain ; freshwater environment ; Feeding ; Growth rate ; Freshwater fish ; Fingerlings ; Length-weight relationships ; Water quality ; Fish culture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 51-53
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 58
    facet.materialart.
    Unknown
    Intraspecific hybridization studies in three strains of Clarias gariepinus (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23022 | 19325 | 2018-03-05 09:09:30 | 23022 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: Intraspecific hybridization studies were carried out in three strains of Clarias gariepinus obtained from three ecological zones in Nigeria: rainforest; (Onitsha strain), Guinea savanna, Kainji strain) and Montanne vegetation, (Jos strain) with the aim of improving the growth performance of the species. Nine genetic mating combinations were generated from the three strains and were successfully induced under controlled hatchery conditions. Indoor and outdoor growth parameters were monitored. The 19 days growth indoors showed significant difference (P〈O.05) in weight gain. Highest weight gain (2.76g) was obtained in Jos parental strain and cross involving female Jos and male Kainji, while the least was recorded in female Kainji and male Onitsha (0.062g). The 50 days outdoor growth performance also showed significant difference between the genetic mating combinations. Maximum weight gain (464.57g) was observed in female Kainji and male Onitsha, while female Jos and male Kainji gave 263.94g weight gain. There was no significant difference (P〉0.05) in length in both indoor and outdoor rearing. Based on this study, the cross-involving female Kainji and male Onitsha is recommended for fingerling production of Clarias gariepinus.
    Description: Includes:- 4 tables.;1 fig.;4 refs.
    Keywords: Aquaculture ; Fisheries ; Clarias gariepinus ; Nigeria ; freshwater environment ; Hybridization ; Breeding ; Genetics ; Hybrid culture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 229 - 233
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 59
    facet.materialart.
    Unknown
    Metal composition of Clarias gariepinus consumed in Makurdi and its environs (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23058 | 19325 | 2018-03-06 15:37:11 | 23058 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: A study was conducted to determine the concentrations of nine heavy Metals (Cadmium, lead.Copper, Chromium, Iron, Zinc, Selenium, Nickel and Aluminum) in gills, muscles and skin of Clarias gariepinus within three different locations (Kuatansule, Wadata and UAM fish) with the use of standard flame Atomic Absorption Spectrophotometry Techniques. Iron was found in high concentration in all the sites with the gills having the highest concentration while lead. Cadmium, Selenium, Nickel and Aluminum were not detectable. Significant differences in metal concentrations were observed between locations with UAM fish farm having the highest metal concentration. It is concluded that concentration, of heavy metals found in selected organs of Clarias gariepinus were within tolerable limits as recommended by FAO.
    Description: Includes:- 1 fig.;13 refs.
    Keywords: Fisheries ; Health ; Clarias gariepinus ; Nigeria ; Makurdi ; freshwater environment ; Metals ; Heavy metals ; Fish ; Toxicity ; Health and safety
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 373 - 378
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 60
    facet.materialart.
    Unknown
    The growth performance and survival of Clarias gariepinus fry raised in homestead concrete tanks (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23421 | 19325 | 2018-04-25 19:22:53 | 23421 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Fertilizer application in earthen ponds has been used as a low-cost method of sustainable aquaculture production. This study was carried out to investigate the growth response of African Catfish fry Clarias gariepinus (Burchell, 1882) in three different culture media in Homestead concrete tanks. The water in the control (T1) was not treated while T2 and T3 were treated with poultry droppings and soy bean milk filtrate respectively. Nine hundred (900) catfish fry weighing averagely 0.67 ? 0.69g were randomly allocated per treatment. In each tank (2m x 3m x 1.5m) were suspended (3) net cages each (1m x 1m x 1m). Each net cage had 100 fry. The fish in tank 1 (control treatment) were fed fish meal from the start at 5% of their body weight four times daily while the other treatments were not fed at all for the first 7 days. Feeding with fishmeal commenced for treatments T2 and T3 on the next 8 ? 14 day. The weights of the feed were adjusted after weekly weighing Analyses of the culture media for phytoplankton composition and water quality parameters were done for all treatments at the end of the experiment. Tables 3 and 4. The culture media with poultry manure (T2) and soyabean filtrate (T3) were found to influence the quality and quantity of the plankton which in turn determined the growth and survival. Tables 1 and 2. However, the best weight increase was recorded in T1 (2.33g) followed by T3 (1.89g) and then T2 (1.81g) had the lowest weight gain. The survival rates in all the treatments were high but was highest in T3 (98%) followed by T2 (97%) and T1 (95%). Dissolved oxygen, pH and temperature of culture media were variously affected by the treatments. The presence of zooplanktons (Rotifer and Daphnia species) invariably supported the highest survival (98%) of the fry in treatment T3. Treatment T3 (11.56 ~c 1.14) x 103) generated higher concentrations of most of identified zooplanktons than treatments T1 (5.39 ~c 0.73) x 103) and T2 (12.78 ~c 0.98) x 103). These zooplanktons were absent in treatments T1 and T2. The result indicated that fertilizing the culture medium using soybean milk filtrate or poultry droppings improved the growth and of C. gariepinus.
    Description: Includes:- 4 tables.;18 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Ibadan ; freshwater environment ; Fish culture ; Growth rate ; Growth ; Survival ; Food organisms
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 45-50
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 61
    facet.materialart.
    Unknown
    Effects of some plant extracts on some biological parameters of catfish Clarias gariepinus (Burchell 1822) (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23493 | 19325 | 2018-05-06 13:04:49 | 23493 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Preliminary studies on the antimicrobial properties of various methods of extraction of Carica papaya (Pawpaw) seeds, Citrus paradisa (Grapefruit peel) and Piper guineese (Black pepper) seeds against eleven bacteria ( Proteus mirabilis, Escherichia coli, Staphylococcus aureus, Acinetobacter sp, Klebsiella pneumoniae, K. oxytoca, Pseudomonas lundensis, Bacillus subtilis, B. megaterium, Citrobacter freundii and Enterobacter cloacae) associated with fresh catfish spoilage were investigated using the cup-plate diffusion method. Cold water, hot water and ethanol were the different extraction solvents used while the concentrations were 0.1g/ml, 0.2g/ml, 0.3g/ml, 0.4g/ml and 0.5g/ml. Generally, hot water extraction of the plant materials was most effective (p 〈 0.01) with the highest mean zone of inhibition of 4.42 ~c 0.38mm followed by ethanol extraction (3.55 ~c 0.47mm). The most susceptible bacteria was Enterobacter cloacae with the highest mean zone of inhibition of 22.6 ~c 3.50mm. This investigation indicates that the antimicrobial compounds in grape peel and black pepper are best liberated when extracted with ethanol while that of pawpaw is best extracted with hot water.
    Description: Includes: 2 tables.;7 refs.
    Keywords: Fisheries ; Clarias gariepinus ; Nigeria ; freshwater environment ; Chemical extraction ; Preservatives ; Plant utilization ; Aquatic plants
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 470-474
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 62
    facet.materialart.
    Unknown
    Apparent nutrient digesibility coefficient of sunflower and sesame seed meal in Clarias gariepinus (Burchell 1822) fingerlings (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23498 | 19325 | 2018-05-07 12:18:41 | 23498 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The apparent digestibility coefficient of raw sunflower (Helianthus annus). and sesame (Sesamum indicum) seedmeal by Clariid catfish (Clarias gariepinus) fingerlings was evaluated at 15,30 and 45% levels of replacement respectively using soybean meal based diets as control diet. There was significant difference (p〈0.05) in apparent organic matter digestibility (AOM), apparent protein digestibility (APD), apparent energy digestibility (AED) apparent carbohydrate digestibility (ACD) between the fish fed control diet and the fish fed test diets. However there was no significant difference (p〉0.05) in apparent lipid and fibre digestibilities of fish fed control diet and test diets RSF15 and RSM15
    Description: Includes:- 5 tables.;33 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Sunflower seed ; freshwater environment ; Digestibility ; Feeding experiments ; Experimental culture ; Nutritional requirements
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 494-500
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 63
    facet.materialart.
    Unknown
    Preliminary study on comparative morphometry of Cynothrissa mento (Regan, 1917) from Ologe, Badagry and Epe Lagoons, Lagos, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23460 | 19325 | 2018-05-05 12:31:34 | 23460 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The morphometric characters of Cynothrissa mento from three major Lagoons (Ologe, Badagry and Epe) in Lagos, Nigeria were compared to assess the possibility of this fish species from the three Lagoons belonging to the same sub-population. The length-weight relationships (LWR), and condition factors (CF) of the fish were also described as well as the physico-chemical parameters of the three water bodies. The study was conducted between May, 2009 and April, 2010 and monthly sampling of fish and water was done in each sampling site. Seven7 physico-chemical parameters were assessed and these are; temperature, pH, salinity, turbidity, dissolved oxygen, total alkalinity and total hardness. A total of 294 specimens (Ologe 60, Badagry 174 and Epe 60) of C. mento were collected from the landings of the local fisher folks from the sampling sites. Seven morphometric characters; total length (TL), standard length (SL), body depth (BD), head length (HL), head depth (HD), eye diameter (ED) and interorbital width (IW) were measured. There was no significant difference (p 〉 0.05) in all the physico-chemical parameters measured among the sampling sites except pH. Coefficient of difference revealed that the C. mento from the three lagoons are uniform in all the morphometric parameters examined, which means that the specimens from the three sampling sites do not belong to different sub-populations. The growth coefficient/slope (b) values obtained for the fish species from the sampling sites ranged from 2.27 - 2.53, and differed significantly (p 〈 0.05) from 3, which indicates that most of the fish species have negative algometric growth.
    Description: Includes:- 4 tables.;1 fig.;24 refs.
    Keywords: Ecology ; Chemistry ; Cynothrissa mento ; Nigeria ; Ologe Lagoon ; Nigeria ; Badagry Lagoon ; Nigeria Epe Lagoon ; marine environment ; Population dynamics ; Morphometry ; Check lists ; Length-weight relationships ; Condition factor ; Physicochemical properties
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 272-278
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 64
    facet.materialart.
    Unknown
    Survival, growth and feed utilization of the reciprocal hybrids of Clarias gariepinus (Burchell, 1822) and Heterobranchus bidorsalis (Geoffroy, 1809) in concrete tanks (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23466 | 19325 | 2018-05-05 12:42:05 | 23466 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: An experiment was conducted to determine the survival rate, fertilization rate, growth performance and feed utilization of the reciprocal hybrids of Clarias gariepinus and Heterobranchus bidorsalis. Two genetic crosses were made: C. gariepinus (male) x H. bidorsalis (female)(Clariabranchus) and H. bidorsalis male x C. gariepinusmale (Heteroclarias. The experiment was divided into two phases; artificial propagation of the fish species using synthetic hormone and rearing the fry for 14 days; and rearing the 14 days old fry for 35 days. In the first phase of the experiment, survival of frys were estimated in each experimental unit (genetic cross) while in the second phase, growth and nutrient utilization were investigated. The result revealed that the highest %fertilization, hatching rate and %survival occurred in H. bidorsalisfemale x C. gariepinus male (Heteroclarias) and the differences were significant (p 〈 0.05). Percentage weight gain and specific growth rate were significantly (p 〈 0.05) higher in Clariabranchus than Heteroclarias. Based on the result of this study, reciprocal hybrids of Clarias gariepinus and Heterobranchus, bidorsalis is recommended for commercial aquacultural practices.
    Description: Includes:- 3 tables.;13 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Heterobranchus bidorsalis ; Heteroclarias ; Nigeria ; Lagos ; freshwater environment ; Survival ; Growth rate ; Feed efficiency ; Genetics ; Fish culture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 305-310
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 65
    facet.materialart.
    Unknown
    Profitability of rice-fish farming in Bida, North Central Nigeria (2021)
    Fisheries Society of nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23486 | 19325 | 2018-05-06 12:52:48 | 23486 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: An experiment was conducted between August and November, 2008 at Wuya-Bida to determine the profitability of integrating fish culture into rice farming. Two treatments (mono-rice and rice-fish) in triplicate were used. The area of each plot was 144 m2 and the mono-rice plots consisted of only rice farming while the rice-fish plots had rice farming incorporated with the raising of Oreochromis niloticus and Clarias gariepinus fingerlings. The fish were fed with compounded feed and wheat offal and at the end of the experimental period of 60 days, O. niloticus fingerlings had a mean weight gain of 47.60 ~c1.86 g in the rice-fish plots while C. gariepinus fingerlings had a mean weight gain of 110.80 ~c2.92 g. C. gariepinus fingerlings performed better than O. niloticus fingerlings. Values for physico-chemical parameters showed that both pH and dissolved oxygen were outside the favourable limits (pH, 6.5-9; DO, 〉 5 mg/lit) recommended for warm water aquaculture in the rice-fish plots. Cost-benefit analysis showed that the integration of fish into the rice system confers substantial profitability on the system going from the production, total and net income differences between mono-rice and rice-fish plots. However, cost-benefit ratio of the mono-rice plots was slightly better than that of the rice-fish plots.
    Description: Includes:- 3 tables.;15 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Clarias gariepinus ; Nigeria ; Bida ; freshwater environment ; Rice field aquaculture ; Agropisciculture ; Fish culture ; Physicochemical properties ; Polyculture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 381-385
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 66
    facet.materialart.
    Unknown
    Preliminary study on the antioxidative and antimicrobial effects of fresh garlic (Allium sativum) on the shelf life of hot smoked catfish (Clarias gariepinus) (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23495 | 19325 | 2018-05-07 12:13:48 | 23495 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The effects of fresh garlic (Allium sativum) at concentrations of 0 g/kg (control), 10 g/kg, 30 g/kg and 50 g/kg of fish on lipid oxidation and microbial growth of hot smoked catfish Clarias gariepinus during a 28 day storage period at ambient temperature of 20-260C was examined. The samples were subjected to chemical and microbial analyses during the storage period. The results of analyses suggest that fresh garlic possesses antioxidant and antimicrobial properties, which can extend the shelf life of Clarias gariepinus.
    Description: Includes:- 1 table.;2 figs.;6 refs.
    Keywords: Fisheries ; Clarias gariepinus ; Nigeria ; Garlic ; freshwater environment ; Chemical analysis ; Chemical composition ; Microbiological analysis ; Processing fishery products ; Preservatives ; Fish storage ; Storage conditions ; Storage effects ; Storage life ; Shellfish
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 480-493
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 67
    facet.materialart.
    Unknown
    Effects of NIOMR smoking kiln and oven on the crude protein, minerals and vitamins of catfish Clarias gariepinus (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24197 | 19325 | 2018-05-16 15:16:21 | 24197 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The effects of two different preservative methods, NIOMR Smoking Kiln and Oven drying on Crude Protein minerals and Vitamin of clarias gariepinus were studied. Clarias gariepinus were obtained from the fish farm of African Regional Aquaculture Centre, Aluu, Port Harcourt. The crude protein, minerals and vitamins of the fresh fish were determined immediately while two other batches were separately dried using oven at 50~'C for 30minutes and NIOMR Smoking Kiln at 70~'C for 3 hours. Result of the crude protien of fresh fish was 21.84 ~c 1.10 which increased to 59.53 ~c 1.88 and 35.41 ~c 1.00 in both NIOMR smoking and oven, respectively. This means that, there was a significant different in both dryers on the crude protein. This will improve the knowledge and capacity of rural women and agricultural communities on the appropriate processing method for fish. The mineral and vitamins of oven dried and NIOMR Smoking kiln were analyzed. The vitamin content of both the fish, dried and smoking kiln shows no significant different except in vitamin A which was significant (p〈0.05).There was significant different (p〈0.05) in the mineral content of the two different drying method except in sodium, Potassium and Phosphorus of the drying method. This result indicates that the two drying methods have effects on the nutritional quality of catfish.
    Description: Includes: 2 tables and 1 figure.;Also includes: 7 references.
    Keywords: Fisheries ; Clarias gariepinus ; Nigeria ; Port Harcourt ; Smoking ; Production ; Preservative research ; Quality ; freshwater environment ; Processing fishery products ; Freshwater fish ; Proteins ; Vitamins ; Minerals ; Cured products ; Quality assurance ; Aquaculture equipment ; Nutritive value ; Drying ; Methodology ; Comparative studies
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 184-187
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 68
    facet.materialart.
    Unknown
    Effects of freezing on the proximate composition and sensory quality of stored African catfish (Clarias gariepinus) and tilapia (Oreochromis niloticus) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24189 | 19325 | 2018-05-16 14:59:40 | 24189 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The objective of this study was to determine the quality deterioration of African catfish Clarias gariepinus and Tilapia, Orechromis niloticus stored at-4~'C for 8 weeks. Weekly analysis was conducted to measure protein, moisture, crude fat and ash content and evaluation of the sensory quality. The result clearly reveals that during storage, both the samples showed a highly significant (p〈0.05) decreasing trend in protein, lipid, ash and moisture content. The result shows that protein, moisture, fat and ash content of the fish samples decreases with increasing duration of frozen storage. The fresh samples has the highest value of protein, moisture, fat and ash content while the least value was recorded on the 8th week. 19.98 ~c 2.66%, 80.71 ~c 1.65%, 3.92 ~c 0.5% and 2.52 ~c were recorded for freshly prepared Clarias gariepinus respectively while 12.62 ~c 1.22%, 66.86 ~c 0.68%, 1.08 ~c 1.04% and 1.14 ~c 0.33% were recorded on the 8th week respectively. 20.80 ~c 1.46, 60.75 ~c 2.50, 9.75 ~c 2.50% and 5.85 ~c 2.51% were recorded for freshly prepared Oreochromis niloticus respectively while 25.05 ~c 2.20%, 47.60 ~c 2. 15%, 7.1 ~c 0.20 and 3.00 ~c 2.10% were recorded on the 8th week respectively. After 8 weeks, the total decrease was 7.36%, 13.85%, 2.84% and 1.38% respectively for Clarias gariepinus and 3.75%, 13.45%, 2.65% and 2.85% respectively for Oreochromis niloticus. Sensory evaluation of the fish samples revealed that quality, texture, colour, odour, aroma and taste decrease with increasing duration of storage and best quality obtained when freshly prepared.
    Description: Includes: 4 tables.;Also includes: 11 references
    Keywords: Fisheries ; Clarias gariepinus ; Oreochromis niloticus ; Nigeria ; Owo ; Frozen ; Fish ; Quality ; Sensory ; Evaluation ; Processing ; freshwater environment ; Chemical composition ; Freshwater fish ; Receptors ; Deterioration ; Quality assurance ; Fish storage ; Freezing storage ; Nutritive value ; Microorganisms ; Enzymatic activity ; Processing fishery products ; Storage effects ; Organoleptic properties ; Temperature effects
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 155-157
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 69
    facet.materialart.
    Unknown
    Preliminary studies on some physico-chemical parameters and fish species composition of Doma Dam, Nasarawa State, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24638 | 19325 | 2018-05-24 09:36:38 | 24638 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Study of some Physico-chemical parameters and fish species composition of Doma Darn was carried out between the month of August 2012. Fishing communities along the dam were selected at sampling stations and collection of fish species. The values of physico-parameters obtained for stations were in the range of 28.10-92 m for depth, 27.70-28.48~'for temperature, 7.03-7.64 for PH, 7.23-7.64mg/l for dissolved oxygen (DO), 30.08-31.75 ntu for turbidity, 94.64-105.17mg/l for alkalinity and 79.17-80.58mg/l for total hardness. The result indicated that there was significant difference (p〈0.5)for depth, temperature turbidity and alkalinity, while there was no significant difference (p〈0.05) for DO, pH and water hardness among the stations. The result of these parameters among the duration shows that there was significant different (p〈0.05) in all the parameters except pH. The study revealed that there were twenty-five (25) fish species belonging to 12 families in the dam. The family Cichlidae and Mochokidae and Bagridae which has three each, While the family, Polypteridae, Channidae, Centropomidae, flepsetidae and Protopteridae has the lowest number of one (1) each. The overall result revealed that the Phvsico-chemical parameters were mostly influenced by duration and not much by stations; and parametersoaram measured were within the recommended water quality requirement for growth and survival of aquatic organisms.
    Description: Includes: 10 references.
    Keywords: Chemistry ; Fisheries ; Nigeria ; Doma Dam ; Doma Dam ; Fishing community ; Physico-chemical parameter ; Fish species ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 295-297
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 70
    facet.materialart.
    Unknown
    Whole rocky fresh water prawns, Caridina africana as replacement for fish meal in diets for African catfish (Clarias gariepinus) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24658 | 19325 | 2018-05-27 14:53:28 | 24658 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Specimens of Caridina africana were oven dried at 110~'C for 24 hours and refrigerated at 200~'C prior to proximate analysis. Whole rocky freshwater prawn meal (WRFWPM) was evaluated as a dietary replacement for fish meal in the diet of C. gariepinus fingerlings. The diets were fed to triplicate groups of C. gariepinus fingerlings (10.6 ~c 0.08g) reared in concrete tanks, to assess the effects of its partial or complete replacement with fish meal for 90 days. The diets comprised a control which contained fish meal as a protein source; 0% and four others on weight basis at 25%, 50%, 75% and 100% in which fish meal was progressively substituted with WRFWPM. The crude protein content was 40% and fed at 4% body weight of the fish per day. Results shows that the daily body weight gain, feed conversion ratio, protein efficiency ratio and protein productive values were highest in diet with 50% replacement, closely followed by diet with 25% replacement. All parameters were significantly different for all diets (p〈0.05). Higher dietary inclusion WRFWPM of 75% and 100% led to decrease in growth performance and nutrient utilization of C. gariepinus fingerlings. The cost WRFWPM was significantly lower than that of fish meal. Though the economic viability of C. africana is yet to be evaluated due to its tiny size; its substitution as a fish meal replacer in the diet of C. gariepinus is considered profitable.
    Description: Includes: 25 references
    Keywords: Aquaculture ; Ecology ; Clarias gariepinus ; Nigeria ; C. africana ; C. gariepinus ; Prawn ; Digestibility ; Replacement ; Proximate ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 366-369
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 71
    facet.materialart.
    Unknown
    Separation of hatchlings from egg shells and unhatched eggs of Clarias gariepinus using incubating net hapa and survival of the hatchlings from broodstocks of varying sizes (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23021 | 19325 | 2018-03-05 09:08:00 | 23021 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: Survival of C. gariepinus hatchlings from different sizes of brood stocks and separation of the hatchlings from egg shells and unhatched eggs using incubating net hapas were examined under indoor hatchery condition in glass aquaria tanks using well water. The net hapas were constructed using net with mesh size 1 mm which with held normal size or fully grown fish egg but allowed hatchlings from the eggs to pass out of the hapa into the incubating tank. The hapa facilitated easy separation of hatchlings from egg shells and dead eggs, only small undeveloped eggs passes through the hapa because they were smaller than the mesh size. The use of incubating net hapa with kakabans inside did not have any effect on incubation period, hatching and survival of the hatchlings. The eggs hatched normally within 24 hours at temperature range of 26 27degreesC. About 98% hatching and separation of the hatchlings from egg shells was achieved. Survival of hatchlings was enhanced because pollution due to decaying eggshells and unhatched eggs was eliminated. The same experiment was used to test survival of hatchlings from broodstocks of varying sizes (500gm, 350gm and 250gm). The survival and mortality rate of hatchlings from the three different brood stock sizes were 77.3% mortality, 22.7% survival, 75.9% mortality, 24.1% survival and 68.1% mortality, 31.9% survival for 500gm ,350gm and 250gm broodstocks respectively. Statistically, there was no significant difference (P〉0.05) in survival and mortality rate of hatchlings from different sizes of broodstocks. Fecundity obtained from the brood stocks were 42,972; 50,925 and 80,878 for 250g, 350g and 500g broodstocks, respectively.
    Description: Includes:- 4 tables.;1 plate.;11 rfs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; freshwater environment ; Fish culture ; Hatching ; Eggs ; Hatcheries ; Incubators ; Floating cages ; Survival ; Length-weight relationships
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 224 - 228
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 72
    facet.materialart.
    Unknown
    Comparative effect of alternative feed materials with Artemia in the diet of Clarias gariepinus larvae (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23035 | 19325 | 2018-03-05 09:15:11 | 23035 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: A 35-day feeding trial was conducted to compare and evaluate nine first feeds for Clarias gariepinus. The nine feedingstuff materials contained more than 40% crude protein. Artemia, coppens and fishmeal were used as single protein sources. Fish egg meal, cattle liver meal and shrimp meal were supplemented with yeast alone or yeast combined with folic acid. Twenty fish larvae were kept in plastic bowls with replicate for each treatment inside the laboratory. Feeding commenced after yolk absorption. Each diet was fed to fry twice daily to apparent satiation. Percentage survival at the end of the experimental period ranged between 0% and 100% for fish on fish egg supplemented with yeast and folic acid and liver meal with yeast respectively. Fish fed artemia had the highest weight while those on shrimp meal supplemented with yeast had the least. Highest specific growth rate was in fish fed fish egg supplemented with both folic acid and yeast. The cost of rearing Clarias gariepinus larvae can be appreciably reduced by using non conventional protein sources, which are locally available, for feed preparation.
    Description: Includes:- 4 tables.;1 fig.;14 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; freshwater environment ; Feeding experiments ; Feed efficiency ; Diets ; Food organisms
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 263 - 269
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 73
    facet.materialart.
    Unknown
    Changes in the proximate composition of smoked and sundried Atya gabonensis (Irvine) from Lower River Benue, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23059 | 19325 | 2018-03-06 15:38:43 | 23059 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: The proximate composition of the fresh water shrimp Atya gabonensis (Irvine), preserved by smoking, salting and sun - drying was determined and compared to the fresh shrimp. All the preservation methods significantly (p〈 0.05) increased the total dry matter (38.34 93%), protein content (17.31 48.9) and ash content (28.36 36.17%) over the fresh shrimp value. Moisture and lipid contents however, were reduced from the fresh shrimp's 61.66% and 25.29% to low value of 7.00% and 5.10% respectively. The preserved shrimp is, therefore, nutritionally superior to the fresh shrimp as preservation enhances its proximate composition. Of all the preservation methods used in this work, smoking is the best. It recorded the best preservation indices of lowest moisture content, higher dry matter, higher protein content and highest ash content.
    Description: Includes:- 1 table.;13 refs.
    Keywords: Fisheries ; Chemistry ; Atya gabonensis ; Nigeria ; Benue R. ; freshwater environment ; Lipids ; Organic compounds ; Proteins ; Ash content ; Cured products ; Fish ; Shrimp fisheries
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 378 -381
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 74
    facet.materialart.
    Unknown
    Preliminary studies on the effects of varying levels of aeration on the growth and physiological processes of cultured Clarias gariepinus fingerlings (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23023 | 19325 | 2018-03-05 20:32:22 | 23023 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: To determine the aeration regime and the resultant dissolved oxygen input that imposes the least physiological stress on homeostatic mechanisms of C. gariepinus fingerlings, were culture in the laboratory under 24 hours of continuous aeration and inputing a mean of 8.2 mg/l of 02; 12 hours of aeration (mean of 4.6mgO/l2); and zero-aeration (mean of 1.2 mgO/l2)' Survival rate, growth rate and mean weight gain per day were highest in the 4.6 mgO/l2 culture whereas, the other two cultures were characterized by higher mortality rates and insignificant growth rates. The haematological profile analyzed showed varying degrees of changes in the blood parameters of the fish cultured under varying levels of aeration and their inputed dissolved oxygen levels.
    Description: Includes: 3 tables.;19 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; freshwater environment ; Aeration ; Fish physiology ; Biological stress ; Haematology
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 233 - 239
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 75
    facet.materialart.
    Unknown
    Growth and survival of African catfish (Clarias gariepinus, Burchell 1822): comparison on natural and artificial diet (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24164 | 19325 | 2018-05-13 13:17:21 | 24164 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The growth and survival of Clarias gariepinus larvae with an average length and weight of 6.0mm and 2.57mg respectively were fed commercial dry feed, decysted Artemia or copepods over a twelve day period. Larvae were hatched using the induced hormone technique. After endogenous feeding, 80 larvae were distributed into each of the nine tanks and fed ad libitum thrice a day. The highest growth rate and survival were observed in larva fed with decysted Artemia (p〈0.05). The present study showed that formulated diet may not be a suitable starter diet for Clarias gariepinus larvae.
    Description: Includes: 1 table.;Also includes: 16 references.
    Keywords: Aquaculture ; Ecology ; Clarias gariepinus ; Nigeria ; Adamawa State ; Clarias gariepinus ; Decysted Artemia ; Commercial diet ; Copepod ; Growth and survival ; freshwater environment ; Growth ; Survival ; Freshwater fish ; Artificial feeding ; Fish larvae ; Length-weight relationships ; Diets ; Fish culture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 54-56
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 76
    facet.materialart.
    Unknown
    Supplementation of date palm (Phoenix dactylifera) seed as feed additive for improved performance of juvenile African catfish (Clarias gariepinus) (Burchell, 1822) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24174 | 19325 | 2018-05-13 18:56:53 | 24174 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The present study examined the utilization potential of date palm seed (DPS) as feed additive in the diet of African catfish Clarias gariepinus for efficient feed utilization. A total of 150 African catfish (weight ranged from 81.13 to 91.35 g) were divided into five experimental groups. The experiment was conducted for 70 days. Experimental diets were identical in all composition except for the variation in DPS level. Non-inclusion of DPS was used at 0% (control) and other levels are 0.5% (diet 2), 1.0% (diet 3), 1.5% (diet 4) and 2.0% (diet 5). The growth performance and nutrient utilization of African catfish including Weight Gain (WG), Specific Growth Rate (SGR), Protein Efficiency Ratio (PER) and Protein Productive Value (PPV) were significantly (p〈0.05) higher than those of fish fed control diets, where DPS supplementation at 1.5% appears to be generally higher than other levels. In the same trend fish fed diets with DPS supplementation produced improved fish carcass values and the haematology of fish was generally better from diets in all DPS fed fish. Overall production performance and subsequent fish quality assessments indicated that the diets containing 1.5% DPS level recorded the best performance in African catfish compared to other levels including the control diet. Based on the result of the present study, it is concluded that date palm seed supplementation positively influenced growth performance and feed utilization of African catfish as well as ensuring their healthy status.
    Description: Includes: 3 tables.;Also includes: 20 references.
    Keywords: Aquaculture ; Ecology ; Clarias gariepinus ; freshwater environment ; Feed ; Additives ; Utilization ; Freshwater fish ; Juveniles ; Diets ; Feeding experiments ; Fish culture ; Feed efficiency
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 92-97
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 77
    facet.materialart.
    Unknown
    Growth performance of two strains of Clarias gariepinus in indoor and outdoor concrete tanks (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24579 | 19325 | 2018-05-20 05:59:31 | 24579 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Six indoor concrete tanks ( 1.5m x 2.0m x 1m) were stocked with 120 C. gariepinus fingerlings (9.52 ~c 52g). Six outdoor concrete tanks (2m x 2m x lm) were stocked with 240 fingerlings (9.66 ~c 1.52g). The fish samples were collected from Osi Ekiti, Ekiti State and from the National Institute for Freshwater Fisheries Research hatchery, New Bussa, Niger State, both in Nigeria. The fish were acclimatized for three days and were fed with coppens feed. The experimental feed had crude protein level of 40.5% and was fed to the fish for 51 days in two treatments indoor and outdoor. There was no significant variation (p〉 0.05) in the mean initial weight, mean final weight, mean weight gain, food conversion ratio, protein intake, specific growth rate and percentage survival of fish stocked indoors. There was significant difference (p〈 0.05) in the protein effic1ency ratio of fish fed indoors. There was significant difference (p〈 0.05) in the mean weight gain. mean final weight, food convertion ratio, protein intake and protein efficiency ratio of two strains of fish fed the diet outdoor. There was no significant difference (p〉 0.05) in the specific growth rate and percentage survival of the two strains of fish fed outdoor. The highest weight gain was ohserved in the outdoor fish from Osi and the lowest weight gain was recorded in the indoor from New Bussa.
    Description: Includes: 32 references.
    Keywords: Aquaculture ; Ecology ; Clarias gariepinus ; Nigeria ; Growth ; C. gariepinus ; Indoor ; Outdoor ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 51-55
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 78
    facet.materialart.
    Unknown
    Supplementation of date palm (Phoenix dactylifera) seed as feed additive in the diets of juvenile African catfish (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24654 | 19325 | 2018-05-26 12:09:10 | 24654 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The present study was conducted to examine the utilization potential of date palm seed (DPS) as feed additive in the diet of African catfish Clarias gariepinus for improved fed utilization. A total of 150 African catfish (weight ranged from 81.1 to 91.3g) were divided into five experimental groups. The experiment was conducted for 70 days. Experimental diets were identical in all composition except for the variation in DPS inclusion level. Non-inclusion of DPS was used at 0% (control) and other levels are 0.5% (diet 2), 1.0% (diet 3), (diet4) and 2.0% (diet 5). Growth performance and nutrient utilization of African catfish including Weight Gain (WG), Specific Growth Rate (SGR), Protein Efficiency Ratio (PER) and Protein Productive Value (PPV) were significantly (P〈0.05) higher than those diets, where DPS supplementation at 1.5% appears to be generally higher than other levels. In the same trend fish fed DPS supplementation produced improved fish carcass values and the haematology of fish was generally better from diets in overall production performance and subsequent fish quality assessments indicated that the diets containing 1.5% DPS level recronded the best performance in fish compared to other levels including the control diet. Based on the result of the present study, it is concluded that date palm seed supplementation positively influenced growth performance and feed utilization of African catfish as well as ensuring their healthy status.
    Description: Includes: 26 references.
    Keywords: Aquaculture ; Ecology ; Clarias gariepinus ; Date palm seed ; C. gariepinus ; Supplimentation ; Feed additive ; Diets ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 351-354
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 79
    facet.materialart.
    Unknown
    Digestible protein sparing effects of digestible lipids in Clarias gariepinus (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24656 | 19325 | 2018-05-26 12:12:42 | 24656 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A digestibility trial was carried out on Clarias gariepinus fingerlings 2.25 ~c 0.05g for 4 weeks. The results indicated significant difference (P〈0.05) between the gross and digestible diets as out of 20% lipid/protein fed, only 17.75 was digestible. It was this that apparently spared 22.58% out of 30% protein fed for growth. The groundnut oil based diets also showed significant (p〈0.05) between the gross nutrients fed and actual digestible. From the result only 16.80/25.22% out of 20/30% dietary oil and dietary protein fed respectively. The palm oil based diets also exhibited similar trend protein/lipid ratio 15/35 only 12.87/29.52 dietary palm oil and dietary protein respectively was digestible. However, there was no significant difference (P〉0.05) in the groundnut oil and palm oil. Therefore, the digestible lipids in this study were significantly lower than the gross diets fed.
    Description: Includes: 14 references
    Keywords: Aquaculture ; Ecology ; Clarias gariepinus ; Nigeria ; Protein/Lipid ratio ; Gross nutrient ; C. gariepinus ; Palm oil ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 358-361
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 80
    facet.materialart.
    Unknown
    Effects of boiled Jatropha kernel meal as a substitute for soybeans meal in diet of African mud catfish (Clarias gariepinus) fingerlings (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24660 | 19325 | 2018-05-27 14:55:49 | 24660 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A feeding trial was conducted in the laboratory for 8 weeks to evaluate the growth response of C. gariepinus fingerlings using boiled Jatropha kernel as the protein source in place of soybean meal. Four experimental diets (40% crude protein) were formulated, three of these diets contained boiled Jatropha kernel meal at varying levels of 0% 10%, 20%, and 30% while the diet without boiled Jatropha kernel meal served as control. Fish fingerlings were fed weekly at 5% body weight. It was discovered that the percentage weight gain was significantly different (p〈0.05) among the controlled diet and the experimental diets; specific growth rates were also significantly different (p〈0.05) among the controlled diets 3 and 4, but different in diets 1 and 2 with diet 4 (30%) of boiled Jatropha kernel having the highest value. The highest weight gain was recorded in diet 4 containing 30% of boiled Jatropha kernel meal (75.57g), while the least is at 10% inclusion (52.47g). The soybean meal protein increased with increasing boiled Jatropha kernel substitution. Based on the results of this study, it could be concluded that C. gariepinus could tolerate 30% inclusion of boiled Jatropha kernel meal in the diet in place of soybean meal.
    Description: Includes: 23 references.
    Keywords: Aquaculture ; Ecology ; Clarias gariepinus ; Nigeria ; Growth performance ; Nutrition utilization ; C. gariepinus ; Boiled jatropha kernel meal ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 374-379
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 81
    facet.materialart.
    Unknown
    Plankton communities of Ikpa River, South East Nigeria exposed to sand-dredging activities (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24634 | 19325 | 2018-05-23 07:57:04 | 24634 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Plankton communities of Ikpa River, downstream from a sand-dredging area were studied for a period of i2 months (March 2010 to Febntary 2011), covering dry and wet seasons. Most Physico-chemical parameters (pH, Turbidity, Silicates, Transparency and Conductivity) exhibited highly significant spatial variation (p〈0.01), whereas seasonal variation of these variables was not statistically significant(p〉0.05). Significant seasonal variation (p〈0.05) was however observed in temperature, Dissolved Oxygen, Biochemical Dem and(BOD), total Dissolved Solids (TDS), Phosphorus, Nitrates and Conductivity. A total of 51 Taxa of Phytoplankton to 43 genera and 5 families were identified during the period of study. Bacillariophyceae recorded the highest relative abundance with 52.41%, followed by Chlorophyceae with 32.05%, Cyanobacteria with 13.35%, while Euglenophyceae and Dinophyceae 1.26% and 0.83%, respectively. Among the Diatoms,Melosira granulata was the most dominant species with Shanon Weiner's Diversity index (H1) of 0.23 and Simpson's Dominance Index (D) of 0.017. A highly significant variation (p〈0.01) was observed in spatial distribution and seasonal distribution of most of the algaegroups, whereas taxa occurence showed no significant difference (p〉0.05) among the stations and the seasons. A total of 8 taxa zooplankton belonging to 4 genera were identified. Rotifera were the most prevelent groiup with 4 taxa, followed by Cladocera with 2 taxa, while Protozoa and Copepoda recorded 1 species each. A highly significant spatial and seasonal variation (p〈0.01) was observed in Zooplankton abundance among the stations. The Zooplankton dominance profile also showed Rotifers ranking the highest with Shanon-Weiner's Diversity index (H1) of 0.21 and Simpson's Dominance index (D) of 0.014. Correlation coefficient also showed a highly significant relationship (r=0.881); p〈0.01) between Zooplankton and Phytoplankton abundance. Also, a highly significant relationship (r=0.961; p〈0.05) existed between overall plankton distribution and abundance and water quality parameters. Alternative sources of building materials such as Fly, Ash and Industrial Hemp have been recommended inorder to reduce or eliminate the need for building purposes.
    Description: Includes: 17 references.
    Keywords: Ecology ; Environment ; Limnology ; Clarias gariepinus ; Nigeria ; Extruded fish feed ; Aquaculture ; Intensive culture system ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 273-276
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 82
    facet.materialart.
    Unknown
    Effects of fermented clupeid paste as a substitute for fish meal in the diet of Clarias gariepinus fingerlings in hapa nets (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24652 | 19325 | 2018-05-26 12:05:02 | 24652 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The experiment was conduted to determine the effects of fermented clupeid paste as a substitute for fish meal in the diet of Clarias gariepinus fingerlings in hapa nets. Five (5) diets (40% crude protcein) containing fishmeal substituted with 0% (control), 25%, 50%, and 100% ferment clupeid paste were formulated. The fish fingerlings of mean weight 10.83 ~c 0.37g were fed to satiation at body weight twice per day for 30 days in hapa nets. It was observed at the end of the feeding trial that fish fed with 50% fermented paste along With 50%fish meal gave the highest final weight (FW = 19.29g) mean weight gain (MWG= 8.47g), daily growth (DGR =0.28g/day), specific growth rate (SGR 1.92%/day) and total fish production (TFP) of 1.93kg/m3. The feed conversion ratio of 1.47 was best in Diet l (Control). Growth was significantly affected (P〈0.05) and total fish production (TFP) among the treatments. Based on the results obtained from this experiment, 50% substitution level of fermnted clupeid paste with fish meal is considered the optimum inclusion level for the growth of African mud catfish, C. gariepinus fingerrlings production in hapa nets.
    Description: Includes: 17 references.
    Keywords: Aquaculture ; Ecology ; Clarias gariepinus ; Nigeria ; Fermented clupeid paste ; Growth and nutrient utilization ; African mud catfish ; C.gariepinus ; Hapa nets ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 341-344
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 83
    facet.materialart.
    Unknown
    Growth performance of juvenile Clarias gariepinus fed Ipomoea aquatica based diets (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24655 | 19325 | 2018-05-26 12:10:53 | 24655 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A feeding trial was conducted to assess the replacement value of I. aquatica-based diet as dietary replacement of maize in the diets of C. gariepinus. Five isonitrogenous diets were formulated to contain 0% (control diet), 15% 30%, 45%, and 60% I. aquatica. Treatment was carried out in triplicate using ten C. gariepinus juvenile per replicate with mean initial weight of 9.0g. The fish at 5% body weight per day for a period of 8 weeks. The best growth response in terms of mean weight gain was obtained in 15% I. aquatica diet inclusion (35.57 ~c 3.44g), while fish fed 60% I. aquatica diet had the lowest growth response (23.80 ~c 1.18g), FCR was obtained in fish fed 60% I. aquatica (1.79 ~c 0.04), while the lowest was obtained in fish fed 15% I. aquatica. There was no significant difference (p〉0.05) in all the parameters of the treatments. The results revealed that any of the inclusion level can be used up to 60% inclusion level of I. aquatica. However, 15% inclusion level gave the best result in terms of growth.
    Description: Includes: 14 references.
    Keywords: Aquaculture ; Ecology ; Clarias gariepinus ; Nigeria ; I. Aquatica ; Dietary ingredients ; Isonitrogenous ; Experimental diets ; Inclution levels ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 353-357
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 84
    facet.materialart.
    Unknown
    Haematological changes in the blood of Clarias gariepinus fed Chrysophyllum albidum seedmeal replacing maize (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24657 | 19325 | 2018-05-26 12:14:41 | 24657 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This study was conducted to investigate growth response of C. gariepinus fed diets containing C. albidum seed-meal replacing Five isonitrogenous diets containing maize which was replaced by C. albidum at a rate of 0,25, 50, 75 and 100% were made. Without C. albidum seed-meal served as the control, experimental diets were assigned randomly to the tanks and each group was fed 5% body weight in equal proportion per day. The fish fed diet 1 had the highest PCV while the fish fed diet 3 had the PCV. There was significant difference (p〈0.05) in the PCV of the fish fed various dietary treatments. However there was no difference (p〉0.05) in the PCV of the fish fed diet 2, diet 3, diet 4, diet 5. A similar trend as observed for PCV was also Hb, RBC, MCV, MCH and MCHC. There was no significant difference (p〉0.05) in the WBC of the blood of the fish fed various treatments so also were neutrophyls and lymphocytes.
    Description: Includes: 23 references.
    Keywords: Aquaculture ; Ecology ; Clarias gariepinus ; Nigeria ; C. gariepinus ; C. albidum ; Maize ; Dietary treatment ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 362-365
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 85
    facet.materialart.
    Unknown
    Comparative study of proximate composition of oil extracted from African catfish (Clarias gariepinus) viscera and red palm oil (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24659 | 19325 | 2018-05-27 14:54:42 | 24659 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The proximate and fatty acid composition of oil extracted from catfish viscera C. gariepinus and red palm oil was carried out in this study, fish oil was extracted using wet rendering method. The result of the proximate composition shows moisture content of 64.81 ~c 2.37% for catfish viscera and 5.75 ~c 1.40% for red palm oil, protein content 16.40 ~c 2.66% for catfish viscera and 3.27 ~c 0.11% for red palm oil, ash content 120 ~c 0.20% and 1.04 ~c 0.30% for catfish ~c 0.10% and 50.40 ~c 0.84%, peroxide value (PV) 16.60 ~c 0.40 and 1.0 ~c 0.42% and iodine value (IV) 140.05 ~c 0.14% and 51.07 ~c 0.47% for catfish viscera and red palm oil respectively. There was significant difference (p〈 0.05) among the means of moisture, protein, lipid, PV and IV but the ash content shows no significant difference (p〈 0.05). The result of the fatty acids composition shows that red palm oil has the highest saturated palmitic acid and mono-unsaturated oleic acid 44.29% and 40.62% respectively. 10.20% palmitic acid and 6.20% oleic acid was observed in catfish oil. 3 3.26 and 8.59% linoleic acid, 1.40 and 0.40 stearic acid was observed in catfish oil and red palm oil rapeclively. Catfish oil shows dominant unsaturated linoleic and oleic acid, saturated palmitic acid and stearic acid. The result shows that catfish oil is rich in poly-unsaturated fatty acid (PUFA), which lower total serum cholesterol level.
    Description: Includes: 21 references.
    Keywords: Fisheries ; Clarias gariepinus ; Nigeria ; Catfish ; Viscera ; Palm oil ; Fatty acid ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 371-373
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 86
    facet.materialart.
    Unknown
    Comparative growth response of African catfish, Clarias gariepinus fingerlings fed with imported and local feeds (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24153 | 19325 | 2018-05-12 14:51:36 | 24153 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The comparative growth response of African catfish fingerlings (Clarias gariepinus) fed with three (3) local and three (3) imported feeds was studied in the Department of Biological Sciences, Ahmadu Bello University, Zaria between September and October, 2009 with the aim of establishing the best quality feed in terms of specific growth rate, total weight and percentage survival rate for a period of 8 weeks (56 days). One hundred and twenty (120) fingerlings of Clarias gariepinus and six commercial feeds with varying crude proteins namely Chivita, Aquaplus, Vital, Skrettings, Multifeeds and Coppens were used for the experiment. Some water quality parameters analyzed indicated temperature varied from 25.50 ~'C to 28.0 ~'C while pH and dissolved oxygen ranged from 6.6 to 7.2 and 6.3mg/l to 8.2mg/l respectively. The treatment shows significant difference in terms of mean weight gain, specific growth rates and survival rate. The lowest SGR was 0.31 and 0.89 the highest. Fish fed with Chivita and Coppens showed the best growth compared to other treatments.
    Description: Includes: 3 tables.;Also includes: 14 references.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Katsina State ; African catfish ; Local feeds ; Imported feeds. ; freshwater environment ; Freshwater fish ; Feeding experiments ; Growth rate ; Fingerlings ; Feed ; Survival ; Fish culture ; Proteins ; Water quality ; Comparative studies
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 11-13
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 87
    facet.materialart.
    Unknown
    Comparative studies of the growth performance of Clarias gariepinus fingerlings fed commercial feedstuff and live zooplankton (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24154 | 19325 | 2018-05-12 14:54:51 | 24154 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This study on the growth performance of Clarias gariepinus fingerlings fed separately on zooplankton, coppens, aquaculture feed and a combination of Coppens and zooplankton lasted for 8 weeks. Ninety (90) three-week old Hatchery bred fingerlings of Clarias gariepinus used for the study were acclimated for three (3) days in a concrete tank measuring 1m x 1m and fed with fish meal, before commencement of the experiment. The fingerlings were grouped in tens into 9 concrete tanks measuring 1m x 1m x 1m. These tanks were further grouped into threes to give three treatments labelled A〈sub〉1〈/sub〉 - A〈sub〉3〈/sub〉, B〈sub〉1〈/sub〉 - B〈sub〉3〈/sub〉 and C〈sub〉1〈/sub〉 - C〈sub〉3〈/sub〉. Treatment I (A〈sub〉1〈/sub〉 - A〈sub〉3〈/sub〉) were fed with zooplankton, Treatment II (B〈sub〉1〈/sub〉 - B〈sub〉3〈/sub〉) were fed zooplankton and 3% body weight of coppens, while Treatment III (C〈sub〉1〈/sub〉 - C〈sub〉3〈/sub〉) was fed with 5% body weight of coppens only. Zooplanktons used were mainly rotifers, branchionus and Cyclops. Total length and weight of fish were measured weekly and used as growth indices. Data collected were analyzed using one way Analysis of variance and means separated by Duncan's Multiple Range Test. Results from the study revealed that Treatments II and III were not significantly different from each other (P〉0.05) for both length and weight, but were different from Treatment I (P〈0.05). Based on the result, Treatment II is preferred and is recommended, for use, as zooplankton feed supplement helps to reduce cost of production and still ensure optimal production.
    Description: Includes: 5 tables.;Also includes: 7 references.
    Keywords: Aquaculture ; Ecology ; Clarias gariepinus ; Nigeria ; Delta State ; Zooplankton ; Coopens ; Clarias gariepinus ; freshwater environment ; Growth rate ; Freshwater fish ; Feeding ; Artificial feeding ; Fingerlings ; Zooplankton ; Fish culture ; Food organisms
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 14-15
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 88
    facet.materialart.
    Unknown
    The changing chemical composition of chalk streams and rivers (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5157 | 3949 | 2011-09-29 15:19:58 | 5157 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: The area studied was the River Frome system below Dorchester. The main river has its origins mainly in chalk springs, although some of its tributaries have surface run-off from farm lands and heath-lands. Thus the chemistry of the river is affected by changes in land practice and differences in the geology of the catchment area. Regular chemical analysis of chalk waters started at the River Laboratory in 1964, Regular weekly analyses have been carried out since 1965 at Bere Stream (a small chalk stream) and the River Frome (a large chalk stream); also single samples have been analysed to provide preliminary information. In 1970-71 an attempt was made to discover the contribution each main source made to the flow and chemical composition of the River Frome. Results of these investigations are presented in the paper.
    Keywords: Chemistry ; Environment ; Chemical analysis ; Chemical composition ; Rivers ; Stream flow ; Annual report ; England ; Dorset
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 89
    facet.materialart.
    Unknown
    Geochemistry of lipids in lacustrine sediments (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5171 | 3949 | 2011-09-29 15:18:48 | 5171 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: An explanation of the basic premises of the subject and its terminology is given. The article then outlines aspects of research on the organic material found in lacustrine sediments, and the analytical methods involved.
    Keywords: Chemistry ; Earth Sciences ; Diagenesis ; Freshwater lakes ; Geochemistry ; Lipids ; Sediment analysis ; Annual report
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 45-56
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 90
    facet.materialart.
    Unknown
    Joint research project on the aquatic ecotoxicity of organo-aluminium: Chemical reactions. First interim report (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5225 | 1256 | 2011-09-29 15:12:36 | 5225 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: The overall goal of the joint research project is to relate the chemical reactions involved in the formation of organo-aluminium complexes under acid conditions to their toxic effects on the physiology of aquatic organisms. Finally, this research is intended to predict toxic effects arising from acidity and aluminium under varying environmental conditions. This interim report examines the chemical modelling of ion-binding by humic substances where a computer model has been developed and is being tested using field data, and conditions required for the precipitation of aluminium in surface waters.
    Keywords: Chemistry ; Limnology ; Pollution ; Modelling ; Models ; Humic acids ; Surface water ; Aluminium compounds ; Aluminium ; Ions ; Toxicity ; England ; Duddon River
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 26
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 91
    facet.materialart.
    Unknown
    Decomposition in lake sediments: bacterial action and interaction (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5239 | 3949 | 2011-09-29 15:13:47 | 5239 | Freshwater Biological Association
    Details
    Publication Date: 2021-06-24
    Description: This review discusses the processes involved in the decomposition of organic carbon derived initially from structural components of algae and other primary producers. It describes how groups of bacteria interact in time and space in a eutrophic lake. The relative importance of anaerobic and aerobic processes are discussed. The bulk of decomposition occurs within the sediment. The role of bacteria in the nitrogen cycle and the iron cycle, and in sulphate reduction and methanogenesis as the terminal metabolism of organic carbon are described.
    Keywords: Biology ; Chemistry ; Anaerobic bacteria ; Bacteria ; Biodegradation ; Carbon cycle ; Eutrophic lakes ; Fresh water ; Geochemical cycle ; Iron ; Manganese ; Nitrates ; Nitrogen cycle ; Organic carbon ; Oxygen consumption ; Partical size ; Sedimentation ; Sulphates ; Sulphur ; Annual report
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 31-44
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 92
    facet.materialart.
    Unknown
    Biological and climatic influences on the dace Leuciscus leuciscus in a southern chalk-stream (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5247 | 3949 | 2011-09-29 15:08:19 | 5247 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: The dace, Leuciscus leuciscus (L.) is an important cyprinid in terms of population biomass in chalk streams of southern England. Dace recruitment has been shown to vary widely from year to year and it is thought that this variation is largely as a result of the influence of abiotic factors, chiefly water temperature. From 1968 to 1981 there was a thirteen-fold difference in the year class structure index between the minimum index (0.25 in 1972) and the maximum (3.21 in 1976). The problems of such variation, especially those that could ensue from a succession of poor year-classes, are offset by the spread of reproductive effort by each female over several years.
    Keywords: Biology ; Chemistry ; Fisheries ; Abiotic factors ; Age composition ; Annual variations ; Climate ; Fecundity ; Fish eggs ; Fish larvae ; Freshwater fish ; Life history ; Mortality ; Population dynamics ; Predation ; Recruitment ; Sexual reproduction ; Survivial ; Water temperature ; Cyprinidae ; Leuciscus leuciscus ; England ; Dorset ; Chalk streams ; Annual report
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 83-96
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 93
    facet.materialart.
    Unknown
    Analysis and adsorption of phosalone on aquatic sediment (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5257 | 1256 | 2011-09-29 15:09:23 | 5257 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Phosalone is a non systematic, wide spectrum organophosphate pesticide which was discovered in 1961 in the laboratories of the Societe des Usines Chimique Rhone-Poulenc in France. It has been approved for commercial use since 1964 in France, in Australia since 1966, in the United Kingdom in 1967 and in many other countries including Japan, Egypt, USSR and the USA. This study provides a full literature review on all aspects of phosalone including its physical, biological and chemical characteristics, and analytical methods of analysis with particular reference to soils/sediments. Furthermore, it aims to develop a method for the determintion of phosalone in aquatic sediments and to determine the adsorption of phosalone onto kaolinite.
    Keywords: Chemistry ; Limnology ; Pollution ; Insecticides ; Metabolism ; Toxicity ; Biodegradation ; Adsorption
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 54
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 94
    facet.materialart.
    Unknown
    Petroleum hydrocarbons in fresh waters: a preliminary desk study and bibliography (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5278 | 1256 | 2011-09-29 15:11:09 | 5278 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: A literature survey was carried out into the effects of petroleum hydrocarbons in freshwater, from the toxicity, biodegradability and concentration aspects. It was supplemented by a selective search on hydrocarbons in the marine environment for comparison. The aim was to determine the major inputs of these hydrocarbons, their accumulation, effects and fate in freshwaters. The search was confined to the period 1965-1978. The bibliography contains 390 references, divided by subject.
    Keywords: Chemistry ; Limnology ; Pollution ; literature reviews ; petroleum ; toxicity ; biodegradation
    Repository Name: AquaDocs
    Type: book , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 52
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 95
    facet.materialart.
    Unknown
    Concentrations of major ions in the stream water of the River Duddon, England, 1970-1974 [Dataset] (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5349 | 1256 | 2011-05-13 11:55:43 | 5349 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-10
    Description: This dataset provides raw data of chemical analyses made during studies on seasonal variations of some major ions in the stream water of the River Duddon in Cumbria. Measurements of sodium, calcium, potassium, magnesium and chloride ions and pH were taken at 5 stations in the River Duddon between January 1970 and August 1974.
    Description: This data was used in the publication: Carrick, T.R. & Sutcliffe, D.W.: Concentrations of Major Ions in Streams on Catchments of the River Duddon (1971-1974) and Windermere (1975-1978), English Lake District. Freshwater Biological Association, Ambleside, UK, 1983 (FBA Occasional Publications 22)
    Keywords: Chemistry ; Limnology ; Calcium ; chlorides ; fresh water ; ions ; magnesium ; potassium ; seasonal variations ; sodium ; water analysis ; dataset
    Repository Name: AquaDocs
    Type: other
    Format: text/html
    Format: application/vnd.ms-excel
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 96
    facet.materialart.
    Unknown
    Analysis of stream waters in the catchment of Lake Windermere (1975-1978), England [Dataset] (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5351 | 1256 | 2011-05-13 11:55:21 | 5351 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-10
    Description: This dataset provides raw data of chemical analyses made during studies on seasonal variations of some major ions in the stream water of the catchment of Lake Windermere in Cumbria. Measurements of sodium, calcium, potassium, magnesium, chloride ions and pH were taken at 37 stations in the catchment between 1975 and 1978.
    Description: This data was used in the publication: Carrick, T.R. & Sutcliffe, D.W.: Concentrations of major ions in streams on catchments of the River Duddon (1971-1974) and Windermere (1975-1978), English Lake District. Freshwater Biological Association, Ambleside, UK, 1983 (FBA Occasional Publications 22)
    Keywords: Chemistry ; Limnology ; Calcium ; chlorides ; fresh water ; ions ; magnesium ; potassium ; seasonal variations ; sodium ; water analysis ; England ; Lake Windermere ; dataset
    Repository Name: AquaDocs
    Type: other
    Format: text/html
    Format: application/vnd.ms-excel
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 97
    facet.materialart.
    Unknown
    Concentrations of major ions in 182 tarns in the English Lake District (1953-1978) [Dataset] (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5354 | 1256 | 2011-09-16 12:01:28 | 5354 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-10
    Description: This dataset provides raw data of chemical analyses made during studies on seasonal variations of 182 tarns in the English Lake District, Cumbria. Measurements of sodium, calcium, potassium, magnesium, pH, chloride ions, alkalinity, sulphite, strong acids and nitrate were taken between 1953 and 1978.
    Description: This data was used in the publication: Carrick, T.R. & Sutcliffe, D.W.: Concentrations of major ions in lakes and tarns on the English Lake District (1953-1978). Freshwater Biological Association, Ambleside, UK, 1982 (FBA Occasional Publications 16)
    Keywords: Chemistry ; Limnology ; Calcium ; chlorides ; fresh water ; ions ; magnesium ; potassium ; seasonal variations ; sodium ; water analysis ; alkalinity ; England ; Lake District ; dataset
    Repository Name: AquaDocs
    Type: other
    Format: application/vnd.ms-excel
    Format: application/vnd.ms-excel
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 98
    facet.materialart.
    Unknown
    Analyses of treated sewage effluent from Grasmere Treatment Unit (1974-1976), England [Dataset] (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5352 | 1256 | 2012-07-04 19:32:47 | 5352 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-10
    Description: This dataset provides raw data of chemical analyses made during studies on seasonal variations of treated sewage effluent from Grasmere Treatment Unit in Cumbria. Measurements of sodium, calcium, potassium, magnesium and chloride ions were taken between 1974 and 1976.
    Description: This data was used in the publication: Carrick, T.R. & Sutcliffe, D.W.: Concentrations of major ions in streams on catchments of the River Duddon (1971-1974) and Windermere (1975-1978), English Lake District. Freshwater Biological Association, Ambleside, UK, 1983 (FBA Occasional Publications 22)
    Keywords: Chemistry ; Limnology ; Calcium ; chlorides ; fresh water ; ions ; magnesium ; potassium ; seasonal variations ; sodium ; water analysis ; England ; Grasmere ; dataset
    Repository Name: AquaDocs
    Type: other
    Format: application/vnd.ms-excel
    Format: application/vnd.ms-excel
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 99
    facet.materialart.
    Unknown
    Concentrations of major ions in the stream water of the upper basin of the River Duddon, England, 1972-1974 [Dataset] (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5350 | 1256 | 2011-05-13 11:56:03 | 5350 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-10
    Description: This dataset provides raw data of chemical analyses made during studies on seasonal variations of some major ions in the stream water of the upper basin of the River Duddon in Cumbria. Measurements of sodium, calcium, potassium, magnesium and chloride ions and pH were taken at 26 stations in the River Duddon basin between 1972 and 1974.
    Description: This data was used in the publication: Carrick, T.R. & Sutcliffe, D.W.: Concentrations of Major Ions in Streams on Catchments of the River Duddon (1971-1974) and Windermere (1975-1978), English Lake District. Freshwater Biological Association, Ambleside, UK, 1983 (FBA Occasional Publications 22)
    Keywords: Chemistry ; Limnology ; Calcium ; chlorides ; fresh water ; ions ; magnesium ; potassium ; seasonal variations ; sodium ; water analysis ; England ; River Duddon ; dataset
    Repository Name: AquaDocs
    Type: other
    Format: text/html
    Format: application/vnd.ms-excel
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 100
    facet.materialart.
    Unknown
    Major ions in 25 frequently sampled tarns in the English Lake District (1954-56, 1974-1976) [Dataset] (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5353 | 1256 | 2012-07-04 19:33:33 | 5353 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-10
    Description: This dataset provides raw data of chemical analyses made during studies on seasonal variations of 25 frequently sampled tarns in Cumbria. Measurements of sodium, calcium, potassium, magnesium, pH, chloride ions, alkalinity, sulphite, strong acids and nitrate were taken between 1954 and 1956 and between 1974-1976.
    Description: This data was used in the publication: Carrick, T.R. & Sutcliffe, D.W.: Concentrations of major ions in streams on catchments of the River Duddon (1971-1974) and Windermere (1975-1978), English Lake District. Freshwater Biological Association, Ambleside, UK, 1983 (FBA Occasional Publications 22)
    Keywords: Chemistry ; Limnology ; Calcium ; chlorides ; fresh water ; ions ; magnesium ; potassium ; seasonal variations ; sodium ; water analysis ; alkalinity ; England ; Lake District ; dataset
    Repository Name: AquaDocs
    Type: other
    Format: application/vnd.ms-excel
    Format: application/vnd.ms-excel
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...