Effect of temperature on yolk sac utilisation and growth of newly hatched larvae of cobia Rachycentron canadum (Linnaeus, 1766)


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Authors

  • M. Sakthivel
  • R. Jayakumar CMFRI
  • A. K. Abdul Nazar CMFRI
  • G. Tamilmani CMFRI
  • P. Rameshkumar CMFRI
  • C. Kalidas Scientist Mariculture Division
  • M. Anbarasu CMFRI
  • V. Balamurugan CMFRI
  • R. Thiagu CMFRI
  • S. Sirajudeen CMFRI
  • G. Gopakumar CMFRI

https://doi.org/10.21077/ijf.2016.63.3.37464-21

Abstract

The effect of temperature on the utilisation of yolk-sac and growth in terms of length of the larvae of cobia Rachycentron canadum (Linnaeus, 1766) was investigated. Five temperature levels viz., 29, 30, 31, 32 and 33°C were experimented with the newly hatched larvae for a total duration of 52 hours post-hatch (hph). A clear-cut trend of increase in larval length with increase in temperature was noted. The maximum length recorded was 4.41±0.11 mm at 33°C by the end of the experiment. The yolk-sac volume decreased proportionately with rise in temperature. At the end of 52 hph, the lowest yolk-sac volume was recorded at temperature range of 31 to 33°C. Results of the present study suggest that temperature plays a vital role in the yolk-sac utilisation as well as on growth of cobia larvae.

Author Biographies

  • M. Sakthivel

    Principal Scientist

    Mariculture Division

  • R. Jayakumar, CMFRI

    Senior Scientist

    Mariculture Division

  • A. K. Abdul Nazar, CMFRI

    Senior Scientist

    Mariculture Division

  • G. Tamilmani, CMFRI

    Scientist

    Mariculture Division

  • P. Rameshkumar, CMFRI

    Scientist

    Mariculture Division

  • C. Kalidas, Scientist Mariculture Division

    Scientist

    Mariculture Division

  • M. Anbarasu, CMFRI

    Technical Assistant

    Mariculture Division

  • V. Balamurugan, CMFRI

    Senior Research Fellow

    Mariculture Division

  • R. Thiagu, CMFRI

    Senior Research Fellow

    Mariculture Division

  • S. Sirajudeen, CMFRI

    Research Associate

    Mariculture Division

  • G. Gopakumar, CMFRI

    Principal Scientist

    Mariculture Division

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Submitted

2014-02-03

Published

2016-09-30

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How to Cite

Effect of temperature on yolk sac utilisation and growth of newly hatched larvae of cobia Rachycentron canadum (Linnaeus, 1766). (2016). Indian Journal of Fisheries, 63(3). https://doi.org/10.21077/ijf.2016.63.3.37464-21