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Reduced oceanic growth of growth hormone pseudogene‐positive female masu salmon Oncorhynchus masou
Author(s) -
Yamamoto T.,
Kitanishi S.
Publication year - 2014
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.12275
Subject(s) - biology , oncorhynchus , pseudogene , growth hormone , period (music) , endocrinology , zoology , medicine , fishery , hormone , fish <actinopterygii> , gene , genetics , physics , genome , acoustics
This study compared the growth rates of female masu salmon Oncorhynchus masou , who possessed a male‐specific gene marker, the growth hormone pseudogene ( GHp ), and normal females, as estimated from their scale growth. There was a difference between the growth rates of GHp ‐positive females and those of normal females of the same age during the ocean period, although their growth rates during the river period were similar. These results suggest that GHp ‐positive salmonid females exhibit male‐like characteristics such as reduced feeding activity during the ocean period, which depresses their growth.