Reproduction and food habits of two species of sawtail catsharks, Galeus eastmani and G. nipponensis, in Suruga Bay, Japan.
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- HORIE TAKU
- School of Marine Science and Technology, Tokai University
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- TANAKA SHO
- School of Marine Science and Technology, Tokai University
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This study provides information on reproduction and food habits of Galeus eastmani and G. nipponensis in the east and west of Suruga Bay. A total of 731 G. eastmani and 754 G. nipponensis were sampled by commercial bottom trawlers in 1981-1989 and 1992-1996. Size at sexual maturity of both species of Galeus differed between the former and latter period. In G. eastmani, maturity size of females from the east tended to be smaller than those from the west. Both species laid large yolky ova the year round. Both species preyed on a wide variety of marine organisms, mainly Osteichthyes, Cephalopoda and Crustacea. Foods of G. eastmani differed between the east and west by season. Foods in the young stage of G. nipponensis differed from those of immature and mature by season. Body size of the young G. nipponensis was similar for mature G. eastmani, however the young fed on different organisms from G. eastmani in the east. Both species were voracious and opportunistic feeders.
収録刊行物
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- Ｆｉｓｈｅｒｉｅｓ ｓｃｉｅｎｃｅ
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Ｆｉｓｈｅｒｉｅｓ ｓｃｉｅｎｃｅ 66 (5), 812-825, 2000
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
- 1390001204429515904
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- NII論文ID
- 130003903507
- 10004859892
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- NII書誌ID
- AA10993718
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- ISSN
- 14442906
- 09199268
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- NDL書誌ID
- 5545106
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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
