Hepatocyte nuclear size and nutritional condition of larval pejerrey,Odontesthes bonariensis(Cuvier et Valenciennes)
作者:
C. A. Strüssmann,
F. Takashima,
期刊:
Journal of Fish Biology
(WILEY Available online 1990)
卷期:
Volume 36,
issue 1
页码: 59-65
ISSN:0022-1112
年代: 1990
DOI:10.1111/j.1095-8649.1990.tb03519.x
出版商: Blackwell Publishing Ltd
关键词: Odontesthes bonariensis;larvae;starvation;nucleus size;hepatocyte
数据来源: WILEY
摘要:
This paper presents evidence that the size of the nuclei of parenchymal cells of the liver is correlated with the nutritional status of first‐feeding pejerrey larvae,Odontesthes bonariensis(Cuvier et Valenciennes). Kariometry revealed that larvae which successfully began exogenous feeding maintained the large nuclear sizes attained during the period of endogenous feeding. In contrast, nuclei of fasted larvae shrank gradually and lowest values were attained before starvation death. The degree of shrinkage seemed to be dependent on rearing temperature; reduction in nuclear area was faster and more pronounced at higher temperatures. In addition, mean hepatocyte nuclear areas of larger as well as of triploid fish are presented. The results suggest that hepatocyte nuclear size might constitute an alternative indicator for the identification of starving condition in field larval specimen
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