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  • 1
    Electronic Resource
    Electronic Resource
    Fatty acids, Part 43 The preparation and properties of some methyl dimercaptostearates and of some related methyl epithio- and epidithiostearates
    Amsterdam : Elsevier
    Chemistry and Physics of Lipids 13 (1974), S. 92-102 
    Details
    ISSN: 0009-3084
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0009-3084(74)90044-9
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Fatty acids, Part 42 The preparation and properties of methyl monomercaptostearates, some related thiols, and some methyl epithiostearates
    Amsterdam : Elsevier
    Chemistry and Physics of Lipids 13 (1974), S. 71-91 
    Details
    ISSN: 0009-3084
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0009-3084(74)90043-7
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  • 3
    Electronic Resource
    Electronic Resource
    Suppression of first cleavage in the Nile tilapia, Oreochromis niloticus L. - a comparison of the relative effectiveness of pressure and heat shocks
    Amsterdam : Elsevier
    Aquaculture 111 (1993), S. 263-270 
    Details
    ISSN: 0044-8486
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0044-8486(93)90043-X
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  • 4
    Electronic Resource
    Electronic Resource
    Production of heterozygous and homozygous clones in Nile tilapia (1998)
    Springer
    Aquaculture international 6 (1998), S. 197-205 
    Details
    ISSN: 1573-143X
    Keywords: Gynogenesis ; Heterozygous and homozygous clones ; Nile tilapia (Oreochromis niloticus L.)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Production of heterozygous and homozygous clones of Nile tilapia (Oreochromis niloticus L.) was successfully carried out. An outbred clonal line was produced by cross-breeding between a viable mitotic gynogenetic female and male (recessive mutation in a sex determining gene). At the same time, an inbred clonal line was produced by gynogenetic reproduction (retention of 2nd polar body) using optimal pressure/heat shock treatments. The heterozygous and homozygous nature of the two types of clonal lines were checked and identified at the adenosine deaminase ADA* marker locus. A model for the large scale production of similar clones is presented. The possible implications of such clonal lines in genetic research and in the culture of Oreochromis spp. are discussed. © Rapid Science Ltd. 1998
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009250626496
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  • 5
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    Evaluation of different stocking densities of two small indigenous fish, pabda (Ompok pabda) and gulsha (Mystus cavasius ) with Indian major carps in polyculture system (2018)
    Details
    Publication Date: 2021-05-19
    Description: An experiment on the polyculture of carps with high valued small indigenous fish species (SIS) pabda (Ompok pabda) and gulsha (Mystus cavasius) was carried out in six months culture period to evaluate the production performance of carp with small indigenous fish pabda (Ompok pabda) and gulsha (Mystus cavasius) in the on-farm condition. Three stocking densities of pabda and gulsha were tested, keeping the carp species combination and stocking density similar. Each stocking density of pabda and gulsha was considered as treatment and replicated thrice. Fingerlings of pabda and gulsha were stocked at the rate of 5,000 (1:1), 7,500 (1:1) and 10,000 (1:1)/ha in treatments 1, 2 and 3, respectively. In all the treatments, carps (Catla catla, Labeo rohita, and Cirrhinus mrigala) were stocked at the rate of 5,000/ha. The production obtained were 2,986±78, 2,580±88 and 2,393±71kg/ha from treatments 1, 2 and 3, respectively, at harvesting. The production levels showed significant difference (P〈0.05) among treatments. The contribution of pabda and gulsha to total production was 5.22% in treatment 1, while in treatments 2 and 3 were 7.86 and 9.40%, respectively. It was concluded that pabda and gulsha could be cultured in low input carp polyculture management.
    Description: Published
    Keywords: Ompok pabda ; Mystus cavasius ; Catla catla ; Labeo rohita ; Cirrhinus mrigala ; Carp ; Pabda ; Gulsha ; Polyculture
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.57-64
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  • 6
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    Manipulation of chromosomes in fish: review of various techniques and their implications in aquaculture (2021)
    In:  http://aquaticcommons.org/id/eprint/16393 | 12051 | 2015-03-27 09:58:51 | 16393 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-04
    Description: Human ingenuity has made it possible to advent the chromosome manipulation techniques to produce individuals with differing genomic status in a number of fish using various causal agents such as physical shocks (temperature or hydrostatic pressure), chemical (endomitotics) and anesthetic treatments either to suppress the second meiotic division shortly after fertilization of eggs or to prevent the first mitotic division shortly prior to mitotic cleavage formation. This results in the induction of polyploidy (triploidy and tetraploidy), gynogenesis (both meiotic and mitotic leading to clonal lines) and androgenesis in fish population. The rationale for the induction of such ploidy in fish has been its potential for generating sterile individuals, rapidly inbred lines and masculinized fish, which could be of benefit to fish farming and aquaculture. In this paper, these are critically reviewed and the implication of recently developed chromosome manipulation techniques to various fin fishes is discussed.
    Keywords: Aquaculture ; clones ; cell division ; chromosomes ; fish eggs ; hybrid culture ; polyploidy ; gynogenesis ; androgenesis ; reproduction ; biotechnology
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 99-108
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  • 7
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    Polyculture of gulsha (Mystus cavasius Ham.) with rajpunti (Puntius gonionotus Bleeker) and silver carp (Hypophthalmichthys molitrix Val.) in earthen ponds (2021)
    In:  http://aquaticcommons.org/id/eprint/16380 | 12051 | 2015-03-27 10:00:08 | 16380 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-04
    Description: Culture of gulsha (Mystus cavasius) with rajpunti (Puntius gonionotus) and silver carp ( Hypophthalmichthys molitrix) was undertaken to assess the growth and production potential of these species under polyculture system. Fingerlings of gulsha, rajpunti and silver carp were stocked at a density of 18.000, 10.000 and 4.000/ha respectively. Two treatments were tested in this experiment. Treatment-I was conducted with rice bran and mustard oil cake and treatment-II with rice bran and duck weed. All the ponds were fertilized with urea and TSP at fortnightly intervals. After six months' rearing, the gross production was estimated to be 3,582 and 3,125 kg/ha from treatment-I and treatment-II respectively. Total yield showed non-significant differences (P〉0.05) between the treatments.
    Keywords: Aquaculture ; polyculture ; Mystus cavasius ; Puntius gonionotus ; Hypophthalmichthys molitrix
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 9-14
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  • 8
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    Comparative studies on growth of fry of GIFT and Existing strain of Nile tilapia (Oreochromis niloticus L.) (2021)
    In:  http://aquaticcommons.org/id/eprint/16355 | 12051 | 2015-03-27 10:08:24 | 16355 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-04
    Description: Comparative study on growth of fry in nursery system of Genetically Improved Farmed Tilapia (GIFT) and Existing strain of Nile tilapia (Oreochromis niloticus) was performed. The trials were conducted in a series of hapa for two months. The initial mean weight of GIFT and Existing strains of tilapia were 1.03 and 1.12g, respectively and the stocking density for both the strains was maintained at 150/m³. Fishes were fed with supplementary feed 31.29% of protein level. After two months the final cumulative mean weight of GIFT and Existing strain were observed to be 8.38 and 5.51g, respectively. The net gain for weight of GIFT and existing strain were estimated to be 666% and 368% and the mean survival were 95.75% and 81.25%, respectively. The GIFT strain showed significantly (P〈0.05) higher net gain in growth in weight and also higher (P〈0.01) survival than that of existing strain.
    Keywords: Aquaculture ; Oreochromis niloticus ; Genetically Improved Farmed Tilapia ; Hapa-nets
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 25-30
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  • 9
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    Effects of some selective supplemental feeds on the survival and growth of catfish (Clarias batrachus Lin.) fry (2021)
    In:  http://aquaticcommons.org/id/eprint/16373 | 12051 | 2015-03-27 10:12:40 | 16373 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-04
    Description: Feeding experiments were conducted for 21 days to study the effect of live food (Tubifex sp.) and three prepared supplemental feeds on the growth and survival of 13 day old magur (C. batrachus) fry. It was observed that the growth of fry varied significantly (p〈0.05) with different diets. The best growth was shown by the fry fed with Tubifex sp. followed by those fed with the diet containing yeast (30%), milk powder (30%) and chicken eggs (30%). The poorest growth rate was given by the fry fed on yeast (45%) and fish meal (45%). There was no significant difference in survival rates and condition factors among the fry fed with live food and prepared feeds.
    Keywords: Aquaculture ; Clarias batrachus ; fry ; supplemental feeds
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 55-58
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  • 10
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    A histological study of the spermatogenesis in Ompok pabda (Hamilton-Buchanan 1822) (2021)
    In:  http://aquaticcommons.org/id/eprint/16463 | 12051 | 2015-03-27 09:21:50 | 16463 | Bangladesh Fisheries Research Institute
    Details
    Publication Date: 2021-07-05
    Description: The present study deals with the histological analysis of testicular development in Ompok pabda. For the study, male gonads were collected month wise from January to September at Freshwater Station, BFRI, Mymensingh. From the analysis, 4 stages of sperm formation, namely, spermatogonia, spermatocytes, spermatids and spermatozoa, were distinguished. The percent distribution of spermatozoa was highest in July (about 92%). Maximum GSI value was 1.129±0.271 found in July. By analyzing the histology of spermatogenesis it was established that this species breeds once in a year.
    Keywords: Biology ; testes ; histology ; animal reproductive organs ; developmental stages ; spermatogenesis ; freshwater catfish ; Ompok pabda ; Madhu pabda ; Bangladesh
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 185-189
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