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.

본 연구의 목적은 부화 후 67일 동안 대서양산 Haddock, Melanogrammus aeglefinus 치어의 초기성장을 조사하여, 본 종의 발생생물학과 양식 측면에서의 정보 제공하고자 한다. 전장성장은 , TL은 전장이며, X는 부화 후 표본시일), 체중성장은 , BW는 체중이며, X는 부화 후 표본시일)로 각 성장들은 지속적인 성장을 보였다. 체고와 가슴지느러미 길이는 연속적인 성장을 보여 체고성장은 , BD는 체고이며, X는 부화 후 표본시일