Title |
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en
Spatial distribution and feeding habits of the shrimp Crangon uritai as a predator on larval and juvenile marbled sole Pleuronectes yokohamae
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Creator |
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Accessrights |
open access |
Rights |
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ja
© 2004 公益社団法人日本水産学会
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en
© 2004 The Japanese Society of Fisheries Science
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Subject |
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Other
en
bottom water temperature
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Other
en
Crangon uritai
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Other
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Pleuronectes yokohamae
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Other
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predation
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Other
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spatial distribution
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NDC
663
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Description |
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Abstract
en
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.
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Publisher |
en
The Japanese Society of Fisheries Science
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Date |
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Language |
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Resource Type |
journal article |
Version Type |
AM |
Identifier |
HDL
http://hdl.handle.net/2115/14609
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Relation |
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isVersionOf
DOI
https://doi.org/10.1111/j.1444-2906.2004.00824.x
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Journal |
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PISSN
0919-9268
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EISSN
1444-2906
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en
Fisheries Science
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Volume Number70
Issue Number3
Page Start445
Page End455
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File |
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Oaidate |
2023-07-26 |