Age and growth of Sebastes vulpes in the coastal waters of western Hokkaido, Japan
スポンサーリンク
概要
- 論文の詳細を見る
Age and growth of Sebastes vulpes collected from the coastal waters of western Hokkaido were studied. Observation of the otolith margin verified that annuli (outer margins of the opaque zone) were produced chiefly from July to August. This period was associated with parturition and the birth season. The maximum age estimated by the surface method was 12 years but the oldest fish was aged at 35 years by the cross-section method. The surface method was inadequate for aging of S. vulpes older than 6 years because of the underestimation of age. No significant difference was found in the parameters of the growth equations between both sexes. The von Bertalanffy growth curve combined for both sexes was as follows: SLt=358.6(1-exp^[-0.156(t+0.820)]), where SLt is standard length (mm) at age t (after parturition in years). It seems likely that S. vulpes grows slowly and lives longer than previously thought.
- Japanese Society of Scientific Fisheriesの論文
- 2003-06-01
著者
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Takatsu Tetsuya
Graduate School Of Fisheries Sciences Hokkaido University
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Takahashi Toyomi
Graduate School Of Fisheries Sciences Hokkaido University
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Sasaki Masayoshi
Hokkaido Kushiro Fisheries Experimental Station
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NISHIUCHI Syuichi
Hokkaido Central Fisheries Experimental Station
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SHIOKAWA Fumiyasu
Hokkaido Shiribeshi-nanbu Fisheries Extension Office
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Sekigawa Takeshi
Graduate School Of Fisheries Sciences Hokkaido University
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