Development and Reproduction (한국발생생물학회지:발생과생식)

The Korean Society of Developmental Biology (한국발생생물학회)
권호 표지

Effect of Starvation on Growth and Hepatocyte Nuclear Size of Larval Haddock, Melanogrammus aeglefinus

  • Kim, Bong-Seok (Biotechnology Research Division, National Fisheries Research and Development Institute) ;
  • Park, In-Seok (Division of Marine Environment & Bioscience, College of Ocean Science and Technology, Korea Maritime University) ;
  • Kim, Hyung-Soo (Biotechnology Research Division, National Fisheries Research and Development Institute)
  • Received : 2012.03.05
  • Accepted : 2012.05.22
  • Published : 2012.06.30
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Abstract

Early growth, the rate of yolk sac absorption, and nucleus size in liver parenchymal cells were correlated with the nutritional status of first feeding larval haddock, Melanogrammus aeglefinus. Larvae that successfully began exogenous feeding maintained high growth rates, delayed yolk sac resorption, and had larger hepatocyte nuclear sizes than starved larvae. At 10 days post hatch (DPH) the cumulative mortality in the starved larval haddock group was 100%. The area of the hepatocyte nuclei in starved larvae gradually decreased, reaching its lowest value by 9 DPH. Our results support the current practice of providing the first food supply at 3 DPH. Hepatocyte nuclear size can be used to assess larval haddock nutrition status, and may be a good criterion for assessing the success of transition from endogenous to exogenous feeding.

Keywords

References

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