Feeding Ecology of Juvenile Masu Salmon Oncorhynchus masou in the Coasts of Hokkaido with Special Reference to Stomach Contents
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- Asami Hiroki
- Hokkaido Fish Hatchery
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- Hayano Hirofumi
- Hokkaido Fish Hatchery
書誌事項
- タイトル別名
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- Feeding Ecology of Juvenile Masu Salmon <i>Oncorhynchus masou</i> in the Coasts of Hokkaido with Special Reference to Stomach Contents
- Feeding Ecology of Juvenile Masu Salmon
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抄録
Feeding ecology of juvenile masu salmon, Oncorhynchus masou, collected by commercial set nets, was studied in the coastal waters of Hokkaido between 1991 and 1993. Stomach fullness indices varied among sampling dates and two areas sampled (Japan Sea and Pacific Ocean). The stomach contents of juveniles collected along the coasts of the northern Japan Sea were composed entirely of sand lances (Ammodytes personatus), which were 1/4-1/2 of the body lengths of the juvenile salmon. In contrast, stomach contents of the juveniles collected along the coast of the Pacific Oceanincluded a variety of organisms, and size ratios of prey to juveniles were lower than those in the northern Japan Sea. The results of comparisons of juvenile stomach contents between the Japan Sea and Pacific Ocean indicate that juvenile masu salmon occupy different ecological niches in the two areas. Production of juveniles in the northern Japan Sea may depend on the abundance of sand lance.
収録刊行物
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- Fisheries science
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Fisheries science 61 (4), 590-593, 1995
公益社団法人 日本水産学会
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詳細情報 詳細情報について
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- CRID
- 1390001204430041984
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- NII論文ID
- 130003902728
- 10004862755
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- NII書誌ID
- AA10993718
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- NDL書誌ID
- 3644289
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- ISSN
- 09199268
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可