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Iteroparity of stream resident masu salmon Oncorhynchus masou.
Morita, Kentaro; Tsuboi, Jun-Ichi; Sahashi, Genki; Kikko, Takeshi; Ishizaki, Daisuke; Kishi, Daisuke; Endo, Shinsuke; Koseki, Yusuke.
Affiliation
  • Morita K; Hokkaido National Fisheries Research Institute, Japan Fisheries Research and Education Agency, Sapporo, Japan.
  • Tsuboi JI; Research Center for Freshwater Fisheries, National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, Nikko, Japan.
  • Sahashi G; Hokkaido National Fisheries Research Institute, Japan Fisheries Research and Education Agency, Sapporo, Japan.
  • Kikko T; Shiga Prefectural Fisheries Experimental Station, Hikone, Japan.
  • Ishizaki D; Shiga Prefecture Fisheries Division, Otsu, Japan.
  • Kishi D; Gero Branch, Gifu Prefectural Research Institute for Fisheries and Aquatic Environments, Gero, Japan.
  • Endo S; Doutor Coffee Co., Ltd., Tokyo, Japan.
  • Koseki Y; Department of Life Design, Faculty of Home Economics, Otsuma Women's University, Tokyo, Japan.
J Fish Biol ; 93(4): 750-754, 2018 Oct.
Article in En | MEDLINE | ID: mdl-30069884
ABSTRACT
The degree of iteroparity in stream-resident forms of masu salmon Oncorhynchus masou was examined using mark-recapture studies in natural streams. In a partially migratory population, at least 10% of resident males survived after maturation and repeatedly matured for up to 5 years. In the landlocked amago salmon subspecies, the post-maturation survival rate was at least 7% and repeat maturation was observed for up to 3 years for both males and females.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Reproduction / Oncorhynchus Limits: Animals Country/Region as subject: Asia Language: En Journal: J Fish Biol Year: 2018 Document type: Article Affiliation country: Japan
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Reproduction / Oncorhynchus Limits: Animals Country/Region as subject: Asia Language: En Journal: J Fish Biol Year: 2018 Document type: Article Affiliation country: Japan