Length-weight relationship, condition factor and cannibalism in Asian seabass Lates calcarifer (Bloch, 1790) reared in nursery


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Authors

  • Prem Kumar Fish culture division Central Institute of Brackishwater Aquaculture, Chennai, India
  • M. Kailasam Fish culture division Central Institute of Brackishwater Aquaculture, Chennai, India
  • P. Mahalakshmi Social science division Central Institute of Brackishwater Aquaculture, Chennai, India
  • R. V. Borichangar Soil and Water Management Research Unit, Navsari Agricultural University, Navsari-396 450, Gujarat, India
  • G. J. Vanza Soil and Water Management Research Unit, Navsari Agricultural University, Navsari-396 450, Gujarat, India
  • C. Gopal crustacean culture division,Central Institute of Brackishwater Aquaculture, Chennai, India

https://doi.org/10.21077/ijf.2016.63.3.47062-20

Abstract

The length-weight relationship of Asian seabass Lates calcarifer (Bloch, 1790) reared in net cage hapa was studied for a period of 45 days. A total of 22,500 nos. of seabass fry (mean length 1.76 ± 0.39 cm; mean weight 0.132 ± 0.10 g) were stocked in fifteen hapas @ 1500 nos. per hapa (2x1x1m) and fed twice daily with farm made feed @ 10% of the body weight initially and reduced to 8% later on. Sampling was done at an interval of 15 days to assess the growth, survival, cannibalism and performance. On termination of the experiment, survival was 25%. Cannibalism contributed 11–51% to the total mortality. K value >1 indicated healthy condition of fish. During the entire culture period, growth was negatively allometric (b<3). Growth showed an increasing trend from 150.5±13.4 to 732.6±7.7. The study concludes that the hapa system is one of the best option for carrying out the nursery rearing of seabass.

Author Biographies

  • Prem Kumar, Fish culture division Central Institute of Brackishwater Aquaculture, Chennai, India
    Fish culture Division, scientist
  • M. Kailasam, Fish culture division Central Institute of Brackishwater Aquaculture, Chennai, India

    Principal Scientist

    Fish culture division

    CIBA, Chennai

  • P. Mahalakshmi, Social science division Central Institute of Brackishwater Aquaculture, Chennai, India

    Senior Scientist,
    CIBA, Chennai

  • R. V. Borichangar, Soil and Water Management Research Unit, Navsari Agricultural University, Navsari-396 450, Gujarat, India

    Associate professor

    Navsari Agricultural University, Navsari

  • G. J. Vanza, Soil and Water Management Research Unit, Navsari Agricultural University, Navsari-396 450, Gujarat, India

    Assistant professor

    Navsari Agricultural University, Navsari

  • C. Gopal, crustacean culture division,Central Institute of Brackishwater Aquaculture, Chennai, India

    Head 

    Crustacean Culture Division

    CIBA, Chennai

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Submitted

2015-03-03

Published

2016-09-30

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How to Cite

Length-weight relationship, condition factor and cannibalism in Asian seabass Lates calcarifer (Bloch, 1790) reared in nursery. (2016). Indian Journal of Fisheries, 63(3). https://doi.org/10.21077/ijf.2016.63.3.47062-20