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Comparison of the frequency of the growth hormone pseudogene between juvenile and adult female masu salmon Oncorhynchus masou
Author(s) -
Yamamoto T.,
Kitanishi S.
Publication year - 2016
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.12820
Subject(s) - oncorhynchus , biology , juvenile , zoology , salmonidae , genotype , medicine , endocrinology , fish <actinopterygii> , genetics , gene , fishery , rainbow trout
The proportions of individual masu salmon Oncorhynchus masou whose genotypic and phenotypic sex differed were compared among juvenile and adult fish in three rivers, and genotypically male but phenotypically female individuals were observed 6–16% more often among adults than among juveniles. This suggests that during the transition from juvenile to adult, survival rates of genotypically male but phenotypically female individuals are higher than those of normal females. In contrast, genotypically female but phenotypically male individuals were only found in the juvenile period, which suggests that they exhibit a decreased survival rate in comparison with normal males.