Effects of spawning time on the variation of vertebral number in chum salmon <i>Oncorhynchus keta</i>

• ANDO DAISEI

  Salmon and Freshwater Fisheries Research Institute, Hokkaido Research Organization Graduate School of Agricultural Science, Tohoku University

• SHINRIKI YOSHIHITO

  Donan Research Branch, Salmon and Freshwater Fisheries Research Institute, Hokkaido Research Organization

• SHIMODA KAZUTAKA

  Salmon and Freshwater Fisheries Research Institute, Hokkaido Research Organization

• YASUTOMI RYOHEI

  Salmon and Freshwater Fisheries Research Institute, Hokkaido Research Organization

• SASAKI YOSHITAKA

  Salmon and Freshwater Fisheries Research Institute, Hokkaido Research Organization

• MIYAKOSHI YASUYUKI

  Salmon and Freshwater Fisheries Research Institute, Hokkaido Research Organization

• NAKAJIMA MASAMICHI

  Graduate School of Agricultural Science, Tohoku University

Bibliographic Information

Other Title

• サケの産卵時期が脊椎骨数の変異に及ぼす影響
• サケ ノ サンラン ジキ ガ セキツイコツスウ ノ ヘンイ ニ オヨボス エイキョウ
• Effects of spawning time on the variation of vertebral number in chum salmon Oncorhynchus keta

Abstract

  We investigated the relationship between vertebral number variations and spawning time of chum salmon Oncorhynchus keta in the Chitose- and Izari Rivers, Hokkaido Island, Japan. The means of vertebral number in early-spawning populations were higher than those of late-spawning populations in both rivers. A similar trend was observed in juveniles that were derived from different spawning groups in the Chitose River and reared under common conditions. In addition, the means of vertebral number in chum salmon fry captured in the early-sampling season (January and February) were higher than those of the late-sampling season (April) in the Izari River. These results suggest that variations of vertebral number in chum salmon adults and fry are affected by spawning time, and that the variations are originally caused by genetic factors.<br>

Journal

• NIPPON SUISAN GAKKAISHI

  NIPPON SUISAN GAKKAISHI 80 (2), 191-200, 2014

  The Japanese Society of Fisheries Science

Keywords

• サケ
• 産卵時期
• 脊椎骨数
• 変異

Details

• CRID: 1390001206418860416
• NII Article ID: 130003392174
• NII Book ID: AN00193422
• DOI: 10.2331/suisan.80.191
• ISSN: 1349998X
• ISSN: 00215392
• NDL BIB ID: 025478284
• Web Site: https://agriknowledge.affrc.go.jp/RN/2030871623
• Web Site: http://id.ndl.go.jp/bib/025478284
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025478284
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed