Circulating insulin-like growth factor I in juvenile chum salmon: relationship with growth rate and changes during downstream and coastal migration in northeastern Hokkaido, Japan

Kaneko, Nobuto; Taniyama, Natsumi; Inatani, Yu; Nagano, Yuta; Fujiwara, Makoto; Torao, Mitsuru; Miyakoshi, Yasuyuki; Shimizu, Munetaka

Circulating insulin-like growth factor I in juvenile chum salmon: relationship with growth rate and changes during downstream and coastal migration in northeastern Hokkaido, Japan

Kaneko, Nobuto; Taniyama, Natsumi; Inatani, Yu et al.

Fish physiology and biochemistry, 2015, 41(4), 991-1003

Permalink : https://hdl.handle.net/2115/62580

このアイテムのアクセス数:1,118件（2026-10-16 08:19 集計）

閲覧可能ファイル

ファイル	フォーマット	サイズ	閲覧回数	説明
Kaneko70713	pdf	655 KB	954

論文情報

ファイル出力 EndNote Basic出力 Mendeley出力

アクセス権	open access
URI	https://hdl.handle.net/2115/62580
タイトル	Circulating insulin-like growth factor I in juvenile chum salmon: relationship with growth rate and changes during downstream and coastal migration in northeastern Hokkaido, Japan
著者	Kaneko, Nobuto ; Taniyama, Natsumi ; Inatani, Yu ; Nagano, Yuta ; Fujiwara, Makoto ; Torao, Mitsuru ; Miyakoshi, Yasuyuki ; Shimizu, Munetaka
著者名 Kaneko, Nobuto
著者名 Taniyama, Natsumi
著者名 Inatani, Yu
著者名 Nagano, Yuta
著者名 Fujiwara, Makoto
著者名 Torao, Mitsuru
著者名 Miyakoshi, Yasuyuki
e-Rad_Researcher 90431337 著者名 Shimizu, Munetaka
言語	英語
キーワード	Chum salmon
	Juvenile
	Migration
	Growth rate
	RNA/DNA ratio
	Insulin-like growth factor I
発行日	2015-08
出版者	Springer
収録物名	Fish physiology and biochemistry
巻(号)	41(4)
ページ	991-1003
抄録	Chum salmon (Oncorhynchus keta) migrate to the ocean in their first spring, and growth during early marine life is critical for survival. We examined the validity of circulating IGF-I and muscle RNA/DNA ratio as indices of growth rate using individually tagged juvenile chum salmon fed or fasted for 10 days. Serum IGF-I level was highly, positively correlated with individual growth rate. Muscle RNA/DNA ratio also showed a positive correlation, but its relation was not as high as that of IGF-I. We next measured these physiological parameters in chum salmon juveniles caught at river, estuary, port and nearshore of the northeastern Hokkaido, Japan, from May to June in 2013 and 2014, respectively. In both years, there was a trend that serum IGF-I levels were high in nearshore fish and low in river/estuarine fish in June. In contrast, muscle RNA/DNA ratio showed no clear temporal and spatial patterns. The present study shows that circulating IGF-I can be used as a growth index in juvenile chum salmon. Monitoring growth status using serum IGF-I suggests that growth of juvenile chum salmon in the survey area was activated when they left the coast.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	The final publication is available at Springer via http://dx.doi.org/10.1007/s10695-015-0064-7
PISSN	0920-1742
NCID	AA10749080
関連情報	PMID 25948054
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1007/s10695-015-0064-7