Larval recruitment of the manila clam Ruditapes philippinarum in Ariake Sound, southern Japan.
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- ISHII RYO
- Faculty of Bioresources, Mie University
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- SEKIGUCHI HIDEO
- Faculty of Bioresources, Mie University
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- NAKAHARA YASUTOMO
- Kumamoto Prefectural Fishery Research Center
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- JINNAI YASUNARI
- Kumamoto Prefectural Fishery Research Center
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抄録
The mechanisms by which catch yields of the manila clam Ruditapes philippinarum have decreased drastically in Kumamoto Prefecture, southern Japan, and the larval recruitment by which benthic populations of the clam are maintained were studied. Samples at different growth stages (planktonic larvae, new settlers, and small to large bivalves of the species) were collected from February 1997 to December 1998 on two tidal flats (Kawaguchi and Nameishi, 20 km distance from each other) along the eastern coast of Ariake Sound. Densities of planktonic larvae, new settlers and small bivalves were generally higher at Kawaguchi than Nameishi. The higher density of large bivalves at Kawaguchi depends on a high larval density. Larval retention mechanisms coupled with water movement at Kawaguchi, such as tidal residual currents, may be related intimately with the higher larval density at Kawaguchi. Predation by shore birds at and after recruitment may be related to the lower density of large bivalves recorded at Kawaguchi in 1998, despite larval densities being higher there.
収録刊行物
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- Fisheries science
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Fisheries science 67 (4), 579-591, 2001
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
- 1390001204429501568
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- NII論文ID
- 10008269684
- 130003903593
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- NII書誌ID
- AA10993718
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- COI
- 1:CAS:528:DC%2BD3MXmsFynt7o%3D
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- ISSN
- 14442906
- 09199268
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- NDL書誌ID
- 5892728
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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