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  • 1
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    Field application of anabolic steroids in carp seed production. Pt. 1. Rearing of fry to fingerling stage (2021)
    In:  http://aquaticcommons.org/id/eprint/16333 | 12051 | 2015-03-28 14:03:46 | 16333 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-03
    Description: Ethylestrenol (17β Hydroxy-17alpha-ethyl-estr-4-en-3-one) and Stanozolal (17β-Hydroxy-17alpha-methyl 1-5 alpha-androstano-(3,2-C)-pyrazole), both synthetic androgenic steroids, were fed via diet at 3ppm to the fry of catla, rohu and silver carp which were reared up to fingerling stage over a period of 167-172 days in earthen ponds. Ethylestrenol enhanced growth in silver carp and rohu but retarded growth in catla. Stanozolal depressed growth in all the 3 species. Length-weight relationship for these fry had been worked out and the relative condition factor in all the cases was very close to or slightly above 1.0.
    Description: Pt. 2. Rearing of spawn to fry stage. Journal of the Indian Fisheries Association, 27, pp. 27-35
    Keywords: Biology ; food conversion ; freshwater fishes ; anabolic steroids ; growth ; fingerlings ; Catla ; Silver carp ; Rohu
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 65-71
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  • 2
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    Estimation of fishing mortality and migration coefficient of the fishery of juvenile Macrobrachium rosenbergii from Kalu River in Maharashtra (2021)
    In:  http://aquaticcommons.org/id/eprint/16562 | 12051 | 2015-04-08 18:58:39 | 16562 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: The freshwater prawn, Macrobrachium rosenbergii breeds in estuaries and the juveniles after completion of their larval stage start their upward migration towards rivers. It is at this stage fishing of juveniles takes place in river mouths. Kalu River near Titwala, in Maharashtra is estimated based on data presented by Indulkar and Shirgur (1995) for 1991 and 1992 fishing seasons. The fishing mortality was estimated to be 1.50 and 1.28 for a fishing season of 3 months in 1991 and 1992 respectively, while the migration coefficient was computed to be 3.53 during the fishing season. As the average exploitation rate during the study period was only 0.24, the juveniles are not heavily fished and there is a scope for almost doubling the present catch to about 4 million seeds per fishing season.
    Keywords: Fisheries ; Macrobrachium rosenbergii ; fishing mortality ; migration coefficient ; explotation rate ; Kalu River ; Maharashtra ; India
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 47-53
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  • 3
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    Copper, zinc, iron and manganese in sediments and in the rock oyster Saccostrea cucullata in Mumbai coast (2021)
    In:  http://aquaticcommons.org/id/eprint/16609 | 12051 | 2015-04-09 12:36:35 | 16609 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-07
    Description: Sediment and oyster (Saccostrea cucullata) samples were collected at Dhanda, a fishing village in Mumbai, Maharashtra. The samples were analysed for copper, zinc, iron and manganese contents. Metal concentrations in the sediments and bioaccumulated levels in oysters were correlated. There is no positive correlation between the total sedimentary levels of metals analysed and the bioaccumulated levels of respective metals in oyster. A positive correlation between the bioavailable fractions of zinc, iron and manganese, and the bioaccumulated levels exists. Copper, however, shows a negative correlation with respect to the bioaccumulated levels.
    Keywords: Pollution ; Saccostrea cucullata ; zinc ; iron ; manganese ; copper ; oyster ; sediment ; Mumbai ; Maharashtra ; India
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 23-29
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  • 4
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    Ascorbic acid turnover in the ocular tissues of some fishes (2021)
    In:  http://aquaticcommons.org/id/eprint/16017 | 12051 | 2015-01-24 15:10:08 | 16017 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-12
    Description: The ascorbic acid turnover from the ocular tissues of 11 species of fishes from a culture pond and the river Godavari (Andhra Pradesh, India) has been studied. The free ascorbic acid and ascorbigen contents were more in the case of bottom or deep dwelling fishes and the least in the case of surface living forms, depending upon the light penetration in the area that each species inhabits. The enzymic utilization and ascorbic acid-macromolecule complex varied among the fishes possibly depending upon individual energy requirements and not upon light intensity. No size-related or sex-related variation was observed. No variation was observed between riverine and pond-reared fishes of the same species.
    Keywords: Aquaculture ; Biology ; Pond culture ; fish culture ; freshwater ; Godavari River ; India
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 57-60
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  • 5
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    Field trials on culture of Clarias batrachus (2021)
    In:  http://aquaticcommons.org/id/eprint/16328 | 12051 | 2015-03-28 14:04:28 | 16328 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-03
    Description: Culture of Magur, Clarias batrachus on an experimental basis was carried out for a total of 159 days in 6 earthen ponds each of 0.02 ha in area, singly in 2 ponds and in combination with Rohu, Labeo rohita in 4 ponds. Three different artificial feeds were used. Growth of Magur varied from 89 to 110 and survival form 93 to 100%. Out of the 3 feeds used, feed formulation 2 yielded better results. Length-weight relationship parameters were found as log W=0.4979067+1.878346 log L; -1.1116438+2.3511497 log L; and -1.238157+2.433125 log L indicating growth to be not isometric. Relative condition factor (K u) was close to or higher than 1.0 only in fishes higher than 200 mm of total length; K. values which were less than 1.0 up to January, reached values greater than 1.0 by March-April. Condition appears to be influenced by spawning rather than feeding.
    Keywords: Aquaculture ; magur ; Clarias batrachus ; fish culture
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 15-20
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  • 6
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    Field application of anabolic steroids in carp seed production. II. Rearing of spawn to fry stage. (2021)
    In:  http://aquaticcommons.org/id/eprint/16560 | 12051 | 2015-04-08 19:00:15 | 16560 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-06
    Description: Two synthetic androgenic steroids, Ethylestrenol (17 β - Hydroxy - 17 α ethyl - estr - 4 - en - 3 - one) and Stanozolal (17 β - Hydroxy- 17 α - methyl - 5 a - androstano - 3, 2 - C - pyrazole) were fed via diet at 3 ppm to the spawn of Rohu and Mrigal which were reared up to fry stage over a period of 15 days in earthen carp nurseries. Both hormones enhanced growth of spawn. A maximum of 25.78% increase in length and 25.69% increase in weight as compared to the controls has been recorded. Growth rate was recorded to be 0.8 mm & 2.48 mg/day (control), and 1.13 mm & 2.67 mg/day (Stanozolol treated) in case of Mrigal spawn; and 0.91 mm & 2.39 mg/day (control), 1.12 mm & 2.90 mg/day (Ethylestrenol treated), and 1.10 mm & 2.57 mg/day (Stanozolol treated) in case of Rohu spawn. A decrease in the values of Relative Condition Factor upon hormone administration was also noticed.
    Description: Pt. 1. Rearing of fry to fingerling stage. Journal of the Indian Fisheries Association, 23, pp. 65-71.
    Keywords: Biology ; hormones ; anabolic steroids ; growth ; carp nursery ; induced breeding
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 27-35
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  • 7
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    Relative condition factor and food and feeding habits of two ariid catfish from Mumbai waters (2021)
    In:  http://aquaticcommons.org/id/eprint/19335 | 12051 | 2015-12-24 20:20:29 | 19335 | Indian Fisheries Association
    Details
    Publication Date: 2021-06-25
    Description: Condition factor based on length-weight relationship and food and feeding habits of Arius dussumieri (Black lip sea catfish) and Osteogeneiosus militaris (Soldier catfish) from the Mumbai coast have been studied. Relative Condition Factor showed variations on a monthly basis, and appear to be influenced by feeding and breeding activities. Both the species studied are carnivorous bottom feeders, with crustaceans followed by other smaller fishes forming the major food item in the gut contents.
    Keywords: Biology ; relative condition factor ; food and feeding habits ; breeding ; ariid catfishes ; Arius dussumieri ; Osteogeneiosus militaris
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 57-64
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  • 8
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    Bioactivity of epidermal secretion of two marine catfish from Mumbai (2021)
    In:  http://aquaticcommons.org/id/eprint/17925 | 12051 | 2015-09-24 22:34:20 | 17925 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-02
    Description: Crude mucus and its partially purified fractions from two marine catfish from Mumbai, Arius dussumieri and Osteogeneiosus militaris were assayed for their crinotoxicity through assays for hemolysis and haemagglutination of chicken erythrocytes, formation of paw edema in mice, and antibacterial activity against one gram-positive and four gram-negative bacteria. Assays were also done to block the edema using Phineramine maleate, Piroxicam, and Atropine sulfate. Crude toxin as well as their fractions from both the fishes exhibited haemolytic and haemagglutinating activities on chicken blood, besides edematous activity in mice models. The edematous activity was blocked by Phineramine maleate and Piroxicam but enhanced by Atropine sulfate; however, all these activities, either blocking or enhancing, were statistically insignificant. Antibacterial activity was absent in all the extracts tested.
    Keywords: Biology ; Arius dussumieri ; Osteogeneiosus militaris ; marine catfishes ; crinotoxicity ; haemolysis ; haemagglutination ; edema ; antidote
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 97-111
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  • 9
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    Length-weight relationship and condition factor of Perna viridis (Linnaeus, 1758) and Meretrix meretrix (Linnaeus, 1758) from Mumbai waters (2021)
    In:  http://aquaticcommons.org/id/eprint/17871 | 12051 | 2015-09-21 06:46:14 | 17871 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-01
    Description: Length weight relationship of the two commercially important molluscs P. viridis and M. meretrix was found to be W=-0.40263L super(2.044719) & W=-0.04359L super(2.2315498) respectively. Condition factor was recorded to be less than 1.0 for most part of the year in P. viridis and for M. meretrix it ranged from 0.39 to 4.61. The present study reveals that there was allometric growth in both the species and the growth was not satisfactory since it showed lower K-value during most part of the year.
    Keywords: Biology ; length-weight relationship ; condition factor ; Perna viridis ; Meretrix meretrix ; Mumbai ; Maharashtra ; India
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 157-163
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  • 10
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    Hydrobiological studies of an irrigation tank with reference to the culture of large murrel, Channa marulius (Hamilton) and striped murrel Channa striatus (Bloch) (2021)
    In:  http://aquaticcommons.org/id/eprint/18523 | 12051 | 2015-11-01 16:49:01 | 18523 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-07-09
    Description: The importance of selection of species for culture according to the ecological niches and fish food organisms is highlighted with respect to the Fox Sagar, an irrigation take. The tank was infested with submerged vegetation as well as minnows and weed fishes, which rendered the tank unsuitable for the culture of Indian major carps. The tank was stocked with 8000 fingerlings of Channa marulius and C. striatus during 1981 by the local fisherman co-operative society. Only partial harvest was possible during 1982 because of high water level. The final harvest was in April-May, 1983. The yield obtained was 3640 kg during the culture period of about 20 months.
    Keywords: Aquaculture ; fish culture ; freshwater aquaculture ; pond culture ; Channa striatus ; Channa marulius ; murrels
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 88-91
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