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  • Genetics
  • Bhubaneswar, India  (1)
  • Lagos, Nigeria  (1)
  • 2020-2023
  • 2020-2022  (2)
  • 1965-1969
  • 1
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    WorldFish | Bhubaneswar, India
    In:  http://aquaticcommons.org/id/eprint/12749 | 115 | 2013-12-03 13:46:30 | 12749 | WorldFish Center
    Publication Date: 2021-07-05
    Description: Macrobrachiurn rosenbergii is one of the widely cultured freshwater prawn species globally. India was the third largest producer of this species in 2007 and its aquaculture production rose to 43,000 metric tons (t) in 2005 froin less than 500 t in 1995. However, since then production has been declining and in 2008-09 it was 12,856 t, a reduction of more than 70% compared to 2005. There are several contributing factors to this decline, such as slow growth rate, poor survival, disease outbreaks, increase in cost of production, and availability of low risk alternative fish species. However, there is a consensus that poor seed quality leading to unsatisfactory growth and survival rates in ponds is one of the major reasons. Hence, the development of a systematic selective breeding program aimed at improving growth rate and ensuring high survival rate of this species was deemed a high priority. The Central Institute of Freshwater Aquaculture (CIFA), Bhubaneswar, India in collaboration with the WorldFish Center, Malaysia initiated a selective breeding program for this species in 2007.
    Description: CIFA - WorldFish Project on Genetic Improvement of Freshwater Prawn, Macrobrachium rosenbergii (de Man) in India (Phase Two)
    Keywords: Aquaculture ; Prawn culture ; Genetics ; Seed production ; Selective breeding ; Freshwater aquaculture ; India •Livestock and Fish
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 10
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  • 2
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    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23241 | 19325 | 2018-03-18 15:26:11 | 23241 | Fisheries Society of Nigeria
    Publication Date: 2021-07-13
    Description: Cephalic abnormality in nine mating groups involving Clarias gariepinus with cephalic abnormality, non Cephalic and Maiduguri origin were investigated to determine the level and the genetic basis of the occurrences and its aquaculture implication. The highest mean percentage survival in a Cephalic crossed with non cephalic group was 68.6% whereas the last mean percentage survival was 25.7% in the group of Maiduguri cross with Maiduguri parent. Cephalic abnormality was observed in the crosses with both female and male cephalic with a total frequency ranging from 0 % to 70.8. %. The least number of cephalic abnormality was 18.5% which involved a cross of non cephalic with cephalic, and the highest was 70.8%. This level of cephalic abnormality shows that the defect was hereditary. This result implies that, the genetic factor is a major contributor in the feature of cephalic abnormality in Clarias gariepinus.
    Description: Includes:-1 table.;3 appendixes.;11 refs.
    Keywords: Aquaculture ; Fisheries ; Clarias gariepinus ; Nigeria ; freshwater environment ; Diseases ; Deformation ; Fish culture ; Genetics ; Abnormalities ; Genetic abnormalities
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 199 - 208
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