| Title |
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en
Feeding habits of Pacific cod larvae and juveniles in Mutsu Bay, Japan
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| Creator |
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| Accessrights |
open access |
| Rights |
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ja
© 1995 公益社団法人日本水産学会
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en
© 1995 The Japanese Society of Fisheries Science
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| Subject |
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Other
en
Pacific cod
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Other
en
larvae and juveniles
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Other
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feeding habits
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Other
en
Mutsu Bay
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NDC
663
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| Description |
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Abstract
en
The diets and prey widths of Pacific cod (Gadus macrocephalus) larvae and juveniles were examined in Mutsu Bay. In early March, 11 yolk-sac larvae were caught in midwater of the bay mouth. Five of 11 larvae captured had not opened their mouths, and the remaining six had not fed. Post-larvae ≤ 7mm in total length (TL) fed on copepod nauplii, particularly Pseudocalanus nauplii. Prey items of post-larvae >7mm TL were chiefly crustacean eggs, and Pseudocalanus spp. copepodites and adults. From April to June, the main food organisms of cod juveniles were calanoid copepods, and changed from Pseudocalanus spp. to Calanus pacificus, Acartia clausi, and Centropages abdominalis. In addition, cod juveniles opportunistically fed on large-sized food organisms, namely, reptant megalopae, planktonic gastropods, and natant zoeae. In July, cod juveniles mainly fed on benthic prey items, such as gammarid amphipods and fish. It seems probable that these large-sized food organisms play an important role as alternative prey for cod juveniles when they change their main food from calanoid copepods to benthic prey items.
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| Publisher |
en
Japanese Society of Scientific Fisheries
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| Date |
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| Language |
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| Resource Type |
journal article |
| Version Type |
VoR |
| Identifier |
HDL
http://hdl.handle.net/2115/38557
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| Relation |
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isIdenticalTo
DOI
https://doi.org/10.2331/fishsci.61.415
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| Journal |
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PISSN
0919-9268
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NCID
AA10993718
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en
Fisheries Science
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Volume Number61
Issue Number3
Page Start415
Page End422
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| File |
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| Oaidate |
2023-07-26 |
