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  • Articles  (44)
  • Bacteria  (25)
  • Chemistry
  • Humans
  • Organic Chemistry
  • Polymer and Materials Science
  • FISON  (22)
  • Windermere, UK  (22)
  • 2020-2022  (44)
  • 1
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    On the nutrition of Polyphemus pediculus (L.). [Translation from: Trudy Instituta Biologii Vnutrennykh Vodnany 12(15) 170-174, 1966.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4787 | 1256 | 2011-09-29 15:54:01 | 4787 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: Many sides of the biology of Polyphemus pediculus are adequately studied at the present time. Most complicated is the question of its feeding. Dissection does not give an idea of the composition of the food, since Polyphemus strongly grinds its food with its mandibles. For clarification of the composition of the food of Polyphemus pediculus, the authors carried out in July and August 1962 a series of experiments with the application of radio-carbon methods in order to judge the degree of utilization of one or other foods by the quantity of C14, accumulated in the body of the crustacean after feeding. Particular attention in these experiments was given to the question of the possibility of the utilization by polyphemus of plant food - bacteria, algae and detritus.
    Description: Translated from Russian into English
    Keywords: Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Food composition ; Feeding ; Algae ; Carbon 14 ; Bacteria ; Detritus ; Polyphemus pediculus
    Repository Name: AquaDocs
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  • 2
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    Generation time and utilization of energy by aquatic bacteria. [Translation from: Trudy Instituta Biologii Vnutrennykh Vodnany 11(14), 198-202, 1966.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4793 | 1256 | 2011-09-29 15:52:47 | 4793 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: Recent research has shown that the biomass of bacteria in lakes and other water-bodies can attain significant values. The huge production of bacteria is brought about by their great rate of reproduction. In a series of cases their biomass exceeds the biomass of phytoplankton. Therefore in a study of the biological productivity of water bodies it is necessary to calculate the biomass and production not only of the phyto- and zooplankton, but also of bacteria.The authors uses different methods and formulae to to compare the time of one generation of the bacteria.
    Description: Translated from Russian into English
    Keywords: Biology ; Ecology ; Limnology ; Bacteria ; Biomass ; Formulae ; Growth rate ; Russia ; Lake Batorin
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  • 3
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    On methods of evaluation of bacterial production. [Translation from: Lietuvas TSR Mokslu Akademijos Darbai, C Serija 2(55) 3-9, 1971.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4812 | 1256 | 2011-09-29 15:51:26 | 4812 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: By now a great deal of work is known concerning the methods of determining the production of bacteria or similar questions; among these the problems of a common terminology is discussed. The article discusses formulae of production of bacterial populations over time.
    Description: Translated into English
    Keywords: Biology ; Limnology ; Bacteria ; Population number ; Formulae ; Terminology
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  • 4
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    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
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    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
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  • 5
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    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
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    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
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  • 6
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    Determination of the activity of nitrifying bacteria in surface waters by a modified BOD-test. [Translation from: Zentbl.Bakt.Parasitkde 156(1) 414-421, 1972. ] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4844 | 1256 | 2011-09-29 15:49:32 | 4844 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: A modified method of the Biochemical oxygen demand (BOD)test was applied in order to find out the seasonal changing activity of the nitrifying bacteria in surface waters. Samples were taken from the River Elbe near Teufelsbrueck.
    Description: Translated from German into English
    Keywords: Ecology ; Limnology ; Experimental research ; Dissolved oxygen ; Analytical techniques ; Water analysis ; Nitrification ; Bacteria ; Surface water
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  • 7
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    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
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    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
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  • 8
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    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
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    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
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  • 9
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    Studies on heterotrophic nitrification in a lake. [Translation from: Z.allg.Mikrobiol. 12 567-574, 1973. ] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4850 | 1256 | 2011-09-29 15:48:48 | 4850 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: In a lake the nitrogen compounds are liable to regular cycling in which nitrate is reduced and ammonium oxidised. As a nitrate maximum is regularly established in the upper part of the hypolimnion of a stratified summer lake, the authors have dealt in particular with the oxidising side of the nitrogen cycle. Described here are partial results of the nitrification in Plusssee. The Plusssee was chosen, since it is almost entirely without inflows, and, lying in a wooded basin, is well protected from the wind, and therefore stably stratified. In order to determine the number of autotrophic nitrificants the distribution of the Nitrosomonas and Nitrobacter spores in the lake were analysed. From the estimates on the determination of spore numbers of the heterotrophic nitrificants, 14 species in the pure culture were isolated and examined from morphological, biochemical and taxonomic viewpoints.
    Description: Translated from German into English
    Keywords: Ecology ; Limnology ; Bacteria ; Ammonia ; Freshwater lakes ; Nitrification ; Nitrogen cycle
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  • 10
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    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
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    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
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  • 11
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    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
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    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
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  • 12
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    Radioautographic method of determination of number of bacteria in water-bodies [Translation from: Informatsionnyi Byulleten Biologiya Vnutrennikh Vod No.26, 65-67, 1975] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4884 | 1256 | 2011-09-29 15:46:23 | 4884 | Freshwater Biological Association
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    Publication Date: 2021-07-07
    Description: The radioautographic method of determination of the number of autotrophic microorganisms was initially suggested for counting methane-oxidizing bacteria. With the help of this method colonies of hydrogen-oxidizing bacteria are differentiated even more clearly from heterotrophic. Under laboratory conditions it was shown that colonies grown on membrane filters from a pure culture of thionic bacteria on a nutrient medium with radio- active carbonate, give better prints on film. This method was tested by the authors for determining the number of these bacteria in the meromictic Lake Vae de San Juan during the expedition to Cuba in the summer of 1973. The study showed that that the thionic bacteria are found throughout the pelagial. It proved that the thionic bacteria can be well considered in water-bodies by the radioautographic method.
    Description: Translated from Russian into English
    Keywords: Ecology ; Limnology ; Freshwater lakes ; Photography ; Bacteria ; Methodology ; Analytical techniques ; Cuba
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  • 13
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    A simple method for counting bacteria with active electron transport system in water and sediment samples [Translation from: Kiel. Meeresforsch. 31(2) 83-86, 1975] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4903 | 1256 | 2011-09-29 15:44:11 | 4903 | Freshwater Biological Association
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    Publication Date: 2021-07-07
    Description: Description of a simple method for counting bacteria with active electron transport systems in water and sediment samples. Sodium succinate, NADH and NADPH served as electron donors. It is possible to see several sites of electron transport in the larger cells. Especially impressive are the plankton-algae, protozoa, and small metazoa. This is a partial translation of the ”method” section only.
    Description: Translated from German into English
    Keywords: Biology ; Limnology ; Water samples ; Bacteria ; Bacterial counters ; Bacterial filtration ; Methodology
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  • 14
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    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
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    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
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  • 15
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    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
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    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
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  • 16
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    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
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    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
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  • 17
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    The role of infusoria and bacteria as food for Cyclopoida in Rybinsk Reservoir [Translation from: Trudy Instituta Biologii Vnutrennykh Vodnany 22(25), 37-42, 1971] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4975 | 1256 | 2011-09-29 15:37:31 | 4975 | Freshwater Biological Association
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    Publication Date: 2021-07-07
    Description: Despite the fact that it is a long time sinc e the methods of collection and quantitative estimatio n of protozoa were worked out data on the abundance of these animals in freshwaters are not very numerous. Nevertheless, Infusoria and Rhizopoda at high densities are widespread in the water and sediments of lakes and reservoirs. In order to find ou t the importance of infusoria as a food source for cyclopoids we carried out experimental investigations using C14. For this three species of cyclopoids, widely distributed in open regions of Rybinsk reservoir were selected: Cyclops vicinus, Mesocyclops oithonoides and Kesocyclops leuckarti. The data presented give evidence that the species investigated are able as predators to consume infusorian plankton arid bacteria in the form of flocs or small clumps of detritus.
    Description: Translated from Russian into English
    Keywords: Ecology ; Limnology ; Freshwater lakes ; Freshwater crustaceans ; Feeding experiments ; Bacteria ; Feeding ; Russia ; Cyclops vicinus ; Mesocyclops oithonoides ; Kesocyclops leuckarti
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  • 18
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    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
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    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
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  • 19
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    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
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    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
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  • 20
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    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
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    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
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  • 21
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    Proximate composition and amino acids profile of smoked catfish Clarias gariepinus and tilapia Oreochromis niloticus (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23226 | 19325 | 2018-03-18 14:51:17 | 23226 | Fisheries Society of Nigeria
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    Publication Date: 2021-07-13
    Description: The proximate composition and amino acids assay of smoked Clarias gariepinus and Oreochromis niloticus were determined using standard procedures. The mean proximate composition of Oreochromis niloticus are 8.9% moisture, 16.00% lipids, 5.6% ash, 44.5% crude protein, 0.42% crude fiber and 24.9% NFE while Clarias gariepinus has 8.19% moisture, 15.55% lipids, 4.725 ash, 40.46% crude protein, 0.50% crude fiber and 30.58% NFE. There is therefore a nutrient variation between the 2 species of fish Oreochromis niloticus has higher crude protein, lipids, moisture and ash content than Clarias gariepinus.The amino acids profile shows that both fishes have 17 amino acids. Apart from Tryptophan, the following essential amino acids Histidine, Methionine, Threonine, Isoleucine, Leucine, Lysine, Valine and Phenylalanine are present in both fish. Oreochromis niloticus however has higher quantities of the essential amino acids except for Histidine than Clarias gariepinus
    Description: Includes:- 2 tables.;2 figs.;7 refs.
    Keywords: Chemistry ; Fisheries ; Clarias gariepinus ; Oreochromis niloticus ; Nigeria ; Kainji L. ; freshwater environment ; Amino acids ; Ash content ; Lipids ; Organic compounds ; Moisture ; Proteins
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  • 22
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    Evaluations off heavy metals in fish from Lake Geriyo Yola, Nigeria using x-ray fluorescence technique (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23338 | 19325 | 2018-04-07 17:17:18 | 23338 | Fisheries Society of Nigeria
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    Publication Date: 2021-07-14
    Description: The evaluation of Cr. Cu, Mn, Fe, Ni, Zn,As and Pb concentrations in Clarias gariepinus and Oreochromis niloticus from Lake Geriyo Yola,Adamawa, Nigeria using X - ray fluorescence (XRF) technique is discussed. The analytical samples are irradiated with high energy electrons of 109Cd to produce fluorescent X-rays was produced which passes to the Silicon-lithium detector through Mo target as a source of monochromatic X-rays. The spectrum of energy generated on the detector was processed by a Multi- Channel Analyzer to obtain analytical data. The intensity of the fluorescent X-rays on the detector is proportional to the concentration of the individual element of interest in the sample. This method can identify up to 30 or more elements at the same time. The results showed varying levels of heavy metals in the fishes. The concentrations of Cr, Mn, Cu, and Ni in the fishes were much higher than WHO and PEPA maximum permissible limits, while the concentrations of Zn and Pb were lower than the standards. The results suggest that the lake is polluted with Cr, Mn, Cu and Ni and the consumption of fishes of the lake is life threatening to man.
    Description: Includes:- 1table.;11 refs.
    Keywords: Ecology ; Chemistry ; Pollution ; Clarias gariepinus ; Oreochromis niloticus ; Nigeria ; Geriyo L. ; freshwater environment ; Heavy metals ; Fish ; X-ray fluorescence analysis ; Pollution ; Pollution effects
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    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
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  • 24
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    Microbial load on smoked fish sold in Ibadan, Oyo State (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24208 | 19325 | 2018-05-19 06:39:34 | 24208 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The microbial load of four different fish species from five different market locations in Ibadan metropolis were determined using standard microbiological procedures. The bacteria count of fish sampled from Ojo market was the highest while the bacteria count of the fish sample from Bodija market was the lowest. There was no significant difference (p〈0.05) in the microbial load of the fish sampled from various market locations in Ibadan metropolis. Similarly, there was no significant difference (p〉0.05) in the microbial load on various fish species sold in Ibadan metropolis. The isolated bacteria from the study were: E. coli, Salmonella spp, Klebsiella spp, Staphylococcus aureus, Aerosomonas spp, Pseudomonas spp, Vibrio spp, Serratia spp, Chromobacterium spp, Enterobacteria spp and Shigella spp. The fungi count of fish sampled from Omi markets was the highest while the fungi count of the fish sampled from Ojo market was the lowest. The following fungi were however isolated from the study: Aspergillus flavus, Penicillium spp, Fusarium oxysporum, Trrichoderma spp and Ceotrichium albidium. The study shows that reheating may be necessary to destroy or inactivate micro-organisms in smoked fish before consumption.
    Description: Includes: 2 tables and 2 figures.;Also includes: 17 refernces.
    Keywords: Fisheries ; Nigeria ; Ibadan ; Bacteria ; Fungi ; Market ; Fish species ; freshwater environment ; Microbial contamination ; Microorganisms ; Bacteria ; Freshwater fish ; Cured products ; Sample contamination ; Fungi ; Public health ; Quality assurance ; Disinfection
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    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
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  • 26
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    Effect of Terminalia suparba on fecundity and latency period of Clarias gariepinus broodstocks (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24067 | 19325 | 2018-05-10 10:15:21 | 24067 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This study focused on the assessment of Terminalia suparba (bark, leave and root) based diet to improve the ovulation of Clarias gariepinus brood stocks. Ten female and ten male brood stocks were obtained from a reputable fishfarm in Ogun State, Nigeria and were fed with the diets for four weeks before the breeding exercise. The latency period observed in treatments 1 to 4 was 4hours 30minutes while the ovulation period in treatment 5 was 8 hours. There was no significant different (P〉0.05) among the means. The brood stocks in Treatment 2 (Root) has the highest fecundity count (2001) while those in Treatment 5 (control) has the least fecundity count (1496). The phytochemical analysis of the plant materials showed the presence of Alkaloids, Tannin, Phenol, Glycoside, Flavonoids, Steroids, Phlobatannin, Saponin, Anthraquinones. The physical and chemical parameters of water observed showed that dissolved oxygen value ranges from 3.28 -4.60, pH 6.5 - 8.5, temperature 28.0 - 28.8 and conductivity 8.9 - 9.20. It is therefore concluded that the inclusion of Terminalia suparba in the feed of Clarias gariepinus broodstock will not only improve ovulation but also reduce the latency period.
    Description: Includes: 5 tables;Also includes: 11 refs.
    Keywords: Aquaculture ; Chemistry ; Ecology ; Clarias gariepinus ; Nigeria ; broodstocks ; Terminalia specie ; Latency ; fecundity ; Clarias gariepinus ; freshwater environment ; Artificial feeding ; Feeding experiments ; Fecundity ; Brood stocks ; Sublimation heat ; Ovulation ; Physicochemical properties ; Fish culture
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    Microbial occurrence on differently preserved tilapia fish in Abeokuta North Local Government, Nigeria (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24094 | 19325 | 2018-05-16 13:01:01 | 24094 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This study reports the microbial flora of differently processed tilapia fish obtained from Olomoore market, Abeokuta, Nigeria. Samples were purchased, differently processed (using smoking, salting, freezing) and analyzed for the presence of bacteria. Microbial loads and characterisation were examined on the gills and the skin using standard microbiological procedures. The progression of growth was also monitored within I0-day storage period for the differently processed fish. 〈i〉Proteus vulgaris, Leuconostoc meseritiroides, Klebsiella planticola〈/i〉, Pseudomonas spp, 〈i〉Staphylococcus aureus, Bacillus subtitles〈/i〉, Enterobacter spp, 〈i〉Proteus vulgaris〈/i〉, Lactobacillus spp. were the bacteria isolated from the differently processed fish. There was no significant difference (P~B 0. 05) in the bacteria load of the gill during the first day of processing. However, significant variation (P~B 0. 05) existed in the bacteria load of the skin of the fish during the first day of processing. Although no significant difference (P~B 0. 05) was recorded in the bacteria load of the gill and the skin of the fish during the first day of processing in nutrient agar medium. In the tenth day frozen fish gill had the highest bacteria load while smoked fish gill had the lowest bacteria load there was significant difference (P~B 0. 05) in the bacteria load on the gill of differently processed fish gill. Similarly, there was significant variation (P~0.05) in the bacteria load of the skin of the fish during the tenth day processing.
    Description: Includes: 3 tables;Also includes: 29 refs.
    Keywords: Fisheries ; Proteus vulgaris ; Leuconostoc meseritiroides ; Klebsiella planticola ; Staphylocoooccus aureus ; Bacillus subtilis ; Nigeria ; Bacteria ; Microbial ; Occurrence ; Tilapia ; Smoking ; Salting ; Boiling ; freshwater environment ; Microorganisms ; Fishery products ; Processing fishery products ; Fish ; Gills ; Fish diseases ; Skin ; Bacterial diseases ; Pathogens
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    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
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    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
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    Isolation, identification and characterization of Lactobacillus species from fermented locust bean (Parkia biglobosa) for use as probiotics in the aquaculture industry (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24166 | 19325 | 2018-05-13 18:40:22 | 24166 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Probiotics are a promising feed additive to stimulate animal growth and secure a low disease response in aquaculture industry where there are high stocking densities in shrimp and fish production. Fermented locust beans (Parkia biglobosa) are known to be rich in protein and used as food condiment. Probiotic bacteria were isolated from this locally available food material. Culture and characterizations of isolates were carried out. Sugar fermentation patterns were determined by using an API 50 CHL system and incubation were performed anaerobically at 37~'C. MRS broth culture grown at 37~'C overnight was added to 9ml of MRS Agar and the bacteria were incubated at 37~'C for 24 and 48 hrs. Discrete and single colony of lactobacillus was isolated using colony morphology and biochemical tests. The most significant viable taxa isolated was Lactobacillus fermentum at a pH range of (3.0-8.0), while the least viable taxa isolated was Leuconostoc mesenteroides ssp. Microscopically they were Grampositive, rod shaped, non- motile, catalase negative and absence of Endospore.
    Description: Includes: 2 tables and 2 plates.;Also includes: 15 references.
    Keywords: Aquaculture ; Nigeria ; Lagos ; Locust bean ; Probiotics ; Lactobacillus ; Probiotics ; freshwater environment ; Feed ; Additives ; Aquaculture ; Microorganisms ; Bacteria ; Disease resistance ; Fermented products ; Fish culture ; Shrimp culture
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    Physico-chemical and bacteriological investigation of fish and water in Aiba reservoir, Iwo (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23326 | 19325 | 2018-04-06 16:03:20 | 23326 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: This study looked into the physicochemical and bacteriological investigation of fish and water in Aiba Reservoir. Water and fish samples collected were studied to assess their bacteriological and physicochemical characteristics and their suitability for domestic purposes. Structural questionnaires were administered to the fishermen around the reservoir and experiments were carried out in the laboratory to analyze the samples. The results showed that the total viable bacteria count was high(1.02 x 105 cfu/ml) while few Staphylococcus aureus and E. coli occurred insignificantly. The population of S. aureus and E. coli in the fish gills, liver and tissue were insignificant. The results obtained from the physicochemical analysis of the water samples showed that the reservoir has optimum water temperature of 29degreesC ~c 0.25, a pH of 7.70 ~c 0.20, dissolved Oxygen level of 7.20mgO2/1 ~c 0.20 and total hardness of 45.00 mg/ICaC03 ~c 1.05. The microbial load in the fish sample is higher than that in the water sample. Further strict hygienic measures and surveillance is recommended so as to improve the water quality and to avoid deleterious effects on the health of the Iwo inhabitants and its neighboring communities who also benefit from the reservoir.
    Description: Includes:- 2 figs.;11 refs.
    Keywords: Chemistry ; Fisheries ; Nigeria ; Aiba Reservoir ; freshwater environment ; Physicochemical properties ; Bacteriology ; Water quality ; Water ; Bacterial counters
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    Food borne bacterial pathogens in smoke-dried fish in Lagos markets (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23395 | 19325 | 2018-04-12 07:17:16 | 23395 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Fifty samples of smoked fish were obtained from some markets in Lagos and these were analyzed for the presence of Staphylococcus aureus, Vibrio sp. and Listeria monocytogenes. All the samples tested positive for Staphylococcus aureus, 27 samples for Vibrio sp. and none for Listeria monocytogenes. This study reveals that the smoked fish sold in Lagos, could be a potential source of food borne bacterial pathogens and thus the need for improvement in processing and handling are required.
    Description: Includes:- 1 table.;17 refs.
    Keywords: Fisheries ; Health ; Nigeria ; Lagos ; freshwater environment ; Bacteria ; Pathogenic bacteria ; Cured products ; Processing fishery products
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    Bacteria organisms in grow out Clarias gariepinus mortality in Jos Area (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23402 | 19325 | 2018-04-12 08:52:38 | 23402 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The investigation of bacteria in grow-out catfish was carried out from February to June, 2008. 100 dead Clarias gariepinus were collected from ten ponds (A-J) distributed in Jos and its environs. Results from the various ponds showed that Escherichia coli were present in all the location found, while 87.0% of the total samples obtained were positive with bacteria isolates. The isolates were shown to include Aeromonas species (11.5%), Escherichia coli (35.6%), Pseudomonas aeruginosa (15.0%), Streptococcus faecalis (13.8%) and Klebsiella aerogenes (18.4%) of which pond F had 16.1 % of bacteria organisms while ponds B, G and H were both 9.2%, respectively.
    Description: Includes:- 4 tables.;9 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Jos ; freshwater environment ; Bacteria ; Pathogenic bacteria ; Mortality
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    Primary production and physico-chemical parameters of a freshwater fish farm in the south east Nigeria (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23410 | 19325 | 2018-04-12 09:04:25 | 23410 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Comparative primary production in Little Stream Farms, near Uyo was investigated in relation to physico-chemical parameters of the adjacent perennial stream and the fish ponds. Except for temperature, which showed the same values for both stations, physico-chemical variables generally showed significant difference (P〈O.05) between the pond water and the adjacent stream. Values of silicates, Turbidity (NTU), Secchi Disc Transparency and Total Suspended Solids (TSS) exhibited significantly variable trends (P〈O.05), especially in the stream water, in response to the commercial sand dredging activities upstream from the fann location. Lowest value of stream transparency (O.1M) recorded was during the peak of the sand dredging, whereas the stream water showed absolute transparency in the absence of the dredging. The water quality parameters also exhibited a general trend of significant seasonal variation (P〈O.05). Five phytoplankton families: Bacillariophyceae, Chlorophyceae, Cyanobacteria, Euglenophyceae and Dinophyceae occurred in the ponds, while three families, Bacillariophyceae, Chlorophyceae and Cyanobacteria occurred in the stream. Bacillariophyceae showed the highest relative abundance in both stations A and B.
    Description: Includes:- 1 table.;3 figs.;11 refs.
    Keywords: Aquaculture ; Chemistry ; Ecology ; Nigeria ; Akwa Ibom State ; freshwater environment ; Physicochemical properties ; Freshwater ecology ; Water quality ; Phytoplankton ; Suspended particulate matter
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    Classification of the pelagic and benthic compartments of Kainji ecosystem using types and loads of the bacterial flora (2021)
    FISON | Badagry, Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23413 | 19325 | 2018-04-09 17:32:43 | 23413 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Pathogens in aquatic environment constitute health hazards to the aquatic lives (e.g. fish) and by extension man that drinks the water and also eat fish that is caught from such polluted aquatic environment. In this study, pelagic and benthic compartments of Kainji Lake were classified using types and loads of bacterial flora. Quantitative analysis of total heterotrophic count (THC) in pelagic samples showed that THC ranges from 2.0 x 101CFU/ml at Mataki to 3.6 x 106 CFU/ml at Musawa. Pelagic sample from Yauri market showed high bacterial count (3.5 x 106 CFU/ml). Total coliform count (TCC) at Yauri market and Musawa were also very high (3.0 x 104 CFU/ml and 2.1 x 105 CFU/ml respectively. Total heterotrophic count from benthic samples ranges from 4.2 x 102 CFU/g at Kasabo to 3.3 x 107 CFU/g at Yauri market and total coliform count ranges from 1.2 x 101 CFU/g at Garafini island to 3.3 x 103 CFU/g at Yauri market. Total coliform count from the benthic sample was generally lower than that from pelagic samples. Qualitative analysis revealed the presence of Salmonella typhi, Escherichia coli, Aeromonas hydrophila, Vibrio cholera from pelagic samples.
    Description: Includes:- 2 tables.;9 refs.
    Keywords: Biology ; Ecology ; Nigeria ; Kainji L. ; freshwater environment ; Benthos ; Pelagic fisheries ; Bacteria ; Microbiology
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    Assessment of water quality parameters in Lake Alau (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23404 | 19325 | 2018-04-12 08:55:07 | 23404 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The physico-chemical parameters of Lake Alau were monitored for four months to assess the water quality. Parameters such as temperature, transparency, conductivity, dissolved oxygen, biochemical oxygen demand, Ca, P, etc were studied in five stations (A, B, C, D and E). Water samples were collected monthly from 8:00 to l2:00noon, for four months (July - October 2008, wet season) and analysed. The physico-chemical parameters were within the ranges of unpolluted water bodies. Variation occurs in almost all the months of the study. Significant difference (P〈0.05) occurred in pH, transparency and Ca among the stations, and insignificant difference (P〉0.05) in temperature, conductivity, dissolved oxygen, biochemical oxygen demand, Mg and P. These variations may be due to effects of fertilizer application, herbicides and insecticides in irrigated farms around the Lake.
    Description: Includes:- 2 tables.;24 refs.
    Keywords: Chemistry ; Limnology ; Nigeria ; Alau L. ; freshwater environment ; Physicochemical properties ; Water quality ; Temperature ; Turbidity ; Transparency ; Dissolved oxygen
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    Microbiological status of water and fish samples from Jabi Lake, Abuja (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24224 | 19325 | 2018-05-19 07:11:26 | 24224 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Jabi Lake is a natural water body in Abuja Federal Capital Territory (FCT). It was expanded for commercial fishing following relocation of Nigeria's headquarters to Abuja in 1993. Quantitative analysis of microbiological status of water and fish from the Lake was carried out. Samples were collected from the dam site, open water, middle lake and inlet. Result reveal that total coliform count which are indicators of pollution are high (2.0 x 103 cfu/ml, 1.1 x 103 cfu/ml, 1.0 x 103 cfu/ml and 1.1 x 103 cfu/ml for dam site, open water, middle lake, and inlet respectively). Total viable count too is high (9.2 x 103 cfu/ml, 4.9 x 103 cfu/ml, 4.6 x 103 cfu/ml and 4.9 x 103 cfu/ml for dam site, open water, middle lake and inlet respectively). There are no coliform bacteria in the muscle of the fish. High bacterial load is an indication of biological pollution and these calls for restraint on the side of those who are using the lake as site for refuse dump.
    Description: Includes: 10 references.
    Keywords: Fisheries ; Pollution ; Nigeria ; Jabi Lake ; Jabi lake ; Water ; Fish ; Bacteria ; freshwater environment ; Microbiology ; Fish ; Pollution ; Water pollution ; Lake fisheries ; Fishery surveys ; Bacteria ; Baseline studies ; Water sampling ; Microbial contamination ; Muscles ; Freshwater fish ; Pollution surveys ; Water analysis ; Freshwater pollution
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    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
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    Bacteriological assessment of smoked fish (Clarias Sp.) around Shiroro Lake area of Niger State, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24185 | 19325 | 2018-05-16 14:41:02 | 24185 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Bacteria has been implicated in food poisoning, and smoked fish is not an exception.Generally, fish is highly susceptible to spoilage; therefore this study evaluated the bacteria load in smoked fish from three major locations in Shiroro area of Niger State namely; Gwada, Kuta and Zumba.The smoked fish samples collected from these locations were smeared at both the gills and head regions of the fishes. The bacteria samples identified were Escherichia coli, Bacillus subtilis, Staphylococcus aureus, Staphylococcus epidermis, Pseudomonas aeruginosa, and Samonella typhi, which were common to all the three locations sampled, while only Streptococcus feacaliswas only was found to be present in both Kuta and Zumba location.The frequency of occurrence of these 68 bacteria samples isolated ranges from 8 - 20%, with Bacillius subtilis having the highest occurrence and Pseudomonas aeruginosa have the least occurrence. Out of the total 68 samples, 14 skin samples (20.6%) and 5 gills samples (7.4%) exceeded the acceptable limits of total mesophilic aerobic counts which were 10〈sup〉6〈/sup〉 - 10〈sup〉7〈/sup〉 cfu/g. In the case of total coliform counts, 12 skin samples (17.6%) and 7 gills samples (10.3%) exceeded the acceptable limit which is 4.0 x 102, while in the case of Staphylococcus aureus, 4 skin samples (5.9%) and 2 gills samples (2.9%) exceeded the acceptable limit which is 103 cfu/g. Similarly 3 skin samples (4.4%) and 1 gill sample (1.5%) exceeded the acceptable limit of Salmonella typhi which is 104 cfu/g.
    Description: Includes: 4 tables.;Also includes: 21 references.
    Keywords: Fisheries ; Health ; Escherichia coli ; Bacillus subtilis ; Staphylococcus aureus ; Staphylococcus epidermis ; Pseeudomonas aeruginosa ; Nigeria ; Shiroro L. ; Bacteria ; Smoked (Clarias spp) fish ; Location and recommended values ; brackishwater environment ; freshwater environment ; marine environment ; Bacteria ; Food poisoning ; Cured products ; Fish ; Fish spoilage ; Acceptability ; Lake fisheries ; Gills ; Brain ; Evaluation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 140-144
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    Microbiological quality of fresh tilapia raised in ponds fertilized with raw and sterilized cow dung manures (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24222 | 19325 | 2018-05-19 07:06:04 | 24222 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A total of 2,800 tilapia (Oreochromis niloticus) were stocked in seven duplicates 5 by 4 m2 earthen ponds in NIFFR Integrated Farm, New-Bussa, Niger-State. Raw and sterilized poultry manure of 0.13 to 0.52 kg/m3 concentrations were used to fertilize the ponds with the unfertilized ponds serving as control. The following bacteria were isolated from the cow dung manure; Escherichia coli, E. co1iOl57:H7, Aeromonas hydrophila,Salmonella typhi, Shigella dysenteriae and Staphylococcus aureus. The fish samples from the 0.13 and 0.26 kg/m3 sterilized manure fertilized ponds had zero count in the muscles while samples from other ponds had pathogens in their fish muscles. The study revealed that fish samples from sterilized manures were better in terms of microbial safety for fish productions hence sterilized manure are recommended for use in fish production to ensure the microbial safety of the fish, handlers and that of the consumers.
    Description: includes: 13 references.
    Keywords: Aquaculture ; Oreochromis niloticus ; Escherichia coli ; Aeromonas hydrophila ; Samonela typhi ; Shigella dysenteriae ; Staphylococcus aureus ; Nigeria ; Niger State ; Catfish ; Pathogens ; Microbial quality ; Raw and sterilized manue ; freshwater environment ; Bacteria ; Freshwater fish ; Fish culture ; Fish ponds ; Manure ; Microorganisms ; Freshwater aquaculture ; Aquaculture products ; Food fish ; Quality assurance ; Muscles ; Microbial contamination
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 278-280
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    Detection of Listeria monocytogenes in frozen fish in Lagos, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24229 | 19325 | 2018-05-19 07:20:47 | 24229 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The objective of this study was to detect Listeria monocytogenes in frozen fish in Lagos, Nigeria. A total of 55 frozen fish from two markets (Iyana-Ipaja and Mushin) were analyzed for the presence of L. monocytogenes using Oxoid Listeria Precis method. Out of the 55 samples analyzed, only 15 were positive for L. monocytogenes. The study showed that L. monocytogenes is a contaminant of frozen fish and may pose serious health implications on consumption of the contaminated fish.
    Description: Includes: 20 references.
    Keywords: Fisheries ; Health ; Listeria monocytogenes ; Nigeria ; Lagos ; Listeria monocytogenes ; Frozen fish ; Oxoid Listeria Precis ; freshwater environment ; Frozen products ; Fish ; Public health ; Bacteria ; Samples ; Fishery products ; Microbial contamination ; Quality assurance
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 307-310
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    Comparative study of bacterial isolates associated with the skin of catfish (Clarias anguillaris and Heterobranchus bidorsalis) in Kainji Lake area (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24596 | 19325 | 2018-05-20 16:13:09 | 24596 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Sixty apparently healthy Heterobranchus bidorsalis and Clarias anguillaris from NIFFR were cultured and 30 each from Monai and wara villages as wild environments were obtained for the studies. The total bacterial load varied from 2.2 x l05 to 1.08 x l08 and 2.27 x 105 to 6.3 x l08 CFU/g of the skin of C. anguillaris and H.bidorsalis in the culture respectively, while the load varied from 1.77 x 105 to 1.17 x l08 and 2.27 x 105 to 9.0 x l07 CFU/g in the wild respectively. Eleven bacterial general species were identified which include: Bacillus species B.firmus, Pseudomonas species, P. aeruginosa, Escherichia coli, Klebsiella aerogenes, K. ozaenae, Staphylococcus aureus, Streptococcus species, S.faecalis, and Aeromonas species. The aims of this investigation is to compare the type and the load of bacteria isolates on the skin of catfish in both culture and wild environment.
    Description: Includes: 7 references.
    Keywords: Aquaculture ; Fisheries ; Clarias anguillaris ; Heterobranchus bidorsalis ; Nigeria ; Kainji L. ; Comparative study ; Bacteria ; Skin ; Clarias ; Heterobranchus ; Kainji Lake ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 119-122
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    A study of the nutrition of the Rotifer Asplanchna, with the help of Carbon 14 [Translation from: Byulleten ' Instituta Biologii Vodokhranilishch, No. 12, pp.17-20, 1962] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/5047 | 1256 | 2011-09-29 15:28:19 | 5047 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: Laboratory research was done in order to study the feeding of larval Cricotopus silvestris F. in relation to characters of structure of oral apparatus. Results of the experiments are summarised and the oral apparatus morhologically described.
    Description: Translated from Russian into English
    Keywords: Biology ; Limnology ; Freshwater lakes ; Zooplankton ; Nutrition ; Carbon 14 ; Bacteria ; Algae ; Russia ; Asplanchna priodonta ; Asplanchna herricki
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
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    Sphaerotilus natans: description of the morphology, growth and systematics of [Translation from: Schr. Ver. Zellstoff u. Pap.-Chem. u. -Ing., 26, 20-37, 1956] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/5064 | 1256 | 2011-09-29 15:30:02 | 5064 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: The morphology, increase and systematica of Sphaerotilus natans is studied and culture methods examined.
    Description: Translated from German into English
    Keywords: Biology ; Limnology ; Bacteria ; Bacteriology ; Identification ; Experimental culture ; Laboratory culture ; Methodology
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
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