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

Issue

Vol. 63 No. 3 (2016)

Section

Note

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The copyright of the articles published in Indian Journal of Fisheries vests with the Indian Council of Agricultural Research, who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The Council has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use. Due credit line should be given to the ICAR where information will be utilized.

How to Cite

Kumar, P., Kailasam, M., Mahalakshmi, P., Borichangar, R. V., Vanza, G. J., & Gopal, C. (2016). Length-weight relationship, condition factor and cannibalism in Asian seabass Lates calcarifer (Bloch, 1790) reared in nursery. Indian Journal of Fisheries, 63(3). https://doi.org/10.21077/ijf.2016.63.3.47062-20