Spatial distribution and feeding habits of the shrimp Crangon uritai as a predator on larval and juvenile marbled sole Pleuronectes yokohamae

NAKAYA, Mitsuhiro; TAKATSU, Tetsuya; NAKAGAMI, Masayasu; JOH, Mikimasa; TAKAHASHI, Toyomi

Spatial distribution and feeding habits of the shrimp Crangon uritai as a predator on larval and juvenile marbled sole Pleuronectes yokohamae

NAKAYA, Mitsuhiro; TAKATSU, Tetsuya; NAKAGAMI, Masayasu et al.

Fisheries Science, 2004, 70(3), 445-455

Permalink : https://hdl.handle.net/2115/14609

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アクセス権	open access
URI	https://hdl.handle.net/2115/14609
タイトル	Spatial distribution and feeding habits of the shrimp Crangon uritai as a predator on larval and juvenile marbled sole Pleuronectes yokohamae
著者	NAKAYA, Mitsuhiro ; TAKATSU, Tetsuya ; NAKAGAMI, Masayasu ; JOH, Mikimasa ; TAKAHASHI, Toyomi
著者名 NAKAYA, Mitsuhiro
e-Rad_Researcher 50241378 著者名 TAKATSU, Tetsuya
著者名 NAKAGAMI, Masayasu
著者名 JOH, Mikimasa
著者名 TAKAHASHI, Toyomi
言語	英語
キーワード	bottom water temperature
	Crangon uritai
	Pleuronectes yokohamae
	predation
	spatial distribution
発行日	2004-06
出版者	The Japanese Society of Fisheries Science
収録物名	Fisheries Science
巻(号)	70(3)
ページ	445-455
抄録	To examine predation on larval and juvenile Pleuronectes yokohamae by Crangon uritai, the spatial distribution and feeding habits of C. uritai were studied. Crangon uritai fed on various prey, including P. yokohamae. Density-dependent predation on juvenile Crangon spp., larval and juvenile gobiid fish Chaenogobius heptacanthus, mysids, and gammarids was observed. The abundance of alternative prey might, therefore, play an important role in reducing the pressure of predation on P. yokohamae. In each year, C. uritai migrated from depths of 10 m in March to depths of 3 m in May. There was a significant negative correlation between the weighted mean depth (WMD) of C. uritai and the weighted mean bottom water temperature (WMBWT). The migration was, therefore, delayed in the cold spring, during which C. uritai occupied depths of approximately 10 m. In contrast, no significant correlation was found between the WMD of P. yokohamae and WMBWT. Settlement of P. yokohamae began at depths of 15 m, mainly during early April. The spatial distributions of these two organisms show greater overlap during the cold spring, resulting in increased opportunities for predation.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	© 2004 公益社団法人日本水産学会
権利情報	© 2004 The Japanese Society of Fisheries Science
PISSN	0919-9268
EISSN	1444-2906
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1111/j.1444-2906.2004.00824.x