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SERUM THYROXINE, ESTRADIOL-17-BETA, AND TESTOSTERONE PROFILES DURING THE PARRSMOLT TRANSFORMATION OF MASU SALMON, ONCORHYNCHUS-MASOU
被引：21
|作者：
YAMADA, H
OHTA, H
YAMAUCHI, K
机构：
[1] HOKKAIDO UNIV,FAC FISHERIES,DEPT BIOL,HAKODATE,HOKKAIDO 041,JAPAN
[2] HOKKAIDO FISH HATCHERY,HOKKAIDO 06114,JAPAN
关键词：
MASU SALMON;
SMOLTIFICATION;
SERUM;
THYROXINE;
ESTRADIOL-17-BETA;
TESTOSTERONE;
D O I：
10.1007/BF00004317
中图分类号：
Q5 [生物化学];
Q7 [分子生物学];
学科分类号：
071010 ;
081704 ;
摘要：
Changes in serum thyroxine (T4), estradiol-17beta (E2) and testosterone (T) levels during the parr-smolt transformation (smoltification) were investigated in the masu salmon (Oncorhynchus masou) in 1985 and 1987. T4 showed a peak in levels at the early stage of smoltification and E2 and T levels peaked almost at the same time. There were no significant differences between the concentrations of serum hormones in female and males. During smoltification, germ cells in the peri-nucleolus and spermatogonia stage were present in the ovary and testis, respectively. These results suggest that E2 and T may be involved in smoltification in the masu salmon.
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页码：1 / 9
页数：9
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