title: Reduced oceanic growth of growth hormone pseudogene-positive female masu salmon Oncorhynchus masou.
abstract: 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.
authors.affiliation: Department of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, 1-7-1 Kyonancho, Musashino, Tokyo, 180-8602, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Yamamoto
authors.forename: S
authors.initials: S
authors.lastname: Kitanishi
mesh_terms: D000818:Animals; D005260:Female; D005819:Genetic Markers; D013006:Growth Hormone / Q000235:genetics*; D007564:Japan; D017683:Oncorhynchus / Q000235:genetics / Q000254:growth & development*; D011544:Pseudogenes
chemical_list: D005819:Genetic Markers; D013006:Growth Hormone
keywords: Pacific salmon; growth pattern; ocean period; scale; smolt body size