Comparison of Discarded Species Composition between Bag-nets Set at Different Positions in a Small Set-net in the Buzen Sea, Inland Sea of Japan.
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- Hamada Hiroyuki
- Fukuoka Fisheries and Marine Technology Reserch Center
Bibliographic Information
- Other Title
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- 豊前海の小型定置網における袋網位置別投棄魚種組成
- ブゼンカイ ノ コガタ テイチアミ ニ オケル フクロアミ イチベツ トウキ
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Abstract
This paper describes the number of fish and crab caught and discarded in individual bag-nets set at different positions in a small set-net. Most of the fish tended to be caught in the bag-nets at one or both ends in four fish species: S. Zunasi, K. punctatus, C. affinis and L. japonicus, whilst the two crabs C. japonica and P. trituberculatus were caught mainly in the bag-nets around the central part of the fence net. The differences between bag-nets in number of each species caught are discussed in terms of gear design and in particular the design of the fence net and the swimming behavior of these spe-cies. The Mesh size of bag-nets in the small set-net fishery in the Buzen Sea is small to catch small-size shrimp. This leads to by-catch of juveniles of the target fish, in particular L. japonicus, one of the most important species. Assuming that small shrimp are likely to be caught in the bag-nets around the central part of the fence net as previously described in some papers, the result of this paper sug-gests the possibility that larger mesh size in both end bag-nets may allow juvenile L. japonicus to escape through the mesh of these bag-nets without reducing the catch of small shrimps.
Journal
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- NIPPON SUISAN GAKKAISHI
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NIPPON SUISAN GAKKAISHI 63 (1), 43-49, 1997
The Japanese Society of Fisheries Science
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Details 詳細情報について
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- CRID
- 1390282681388606464
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- NII Article ID
- 10004850427
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- NII Book ID
- AN00193422
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- ISSN
- 1349998X
- 00215392
- http://id.crossref.org/issn/00215392
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- NDL BIB ID
- 4119367
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed