| Behaviour of Baltic herring in relation to a poundnet and the possibilities of extending the poundnet season | |
Abstract/OtherAbstract
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Fish behaviour in relation to fishing operations : selected papers from a symposium held in Bergen, 11-13 June 1992: eds. C.S. Wardle and C.E. Hillingworth, ICES marine science symposia, ISSN 0906-060X ; 196, 36 - 40, A preliminary study was conducted to clarify the possibilities of extending the herring poundnet season into the autumn when herring stocks are dispersed along the feeding grounds. Water movements and the swimming patterns of Baltic herring (Clupea harengus L.) in relation to an experimental poundnet. placed in a typical poundnet fishery area in the Archipelago Sea (ICES Subdivision 29N). were monitored with a current meter, echo sounder, and gillnets. No schools were found in the bay. Scattered herring were swimming in the bay 34 m below the surface after dark. There was a dominant southwesterly water movement near the leader net and a higher fish density was recorded on the current side of the poundnet. Considerable numbers of herring were found to return from the leader net back in the direction from which they came. Problems in the capture process of a herring poundnet in autumn seem to be connected to the guiding performance of the leader net., Affiliation: Finnish Game and Fisheries Research Institute, Fisheries Division |
Authors
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Tschernij, V., Lehtonen, E., Suuronen, P. |
Contributors
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Publication Detail
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Publisher : - Type : text Format : - |
Date Detail
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1993 |
Subject
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catching methods, fishing gear, seasonal variations, activity patterns, Clupea harengus, Archipelago Sea |
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Relation
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Source
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Copyright Information
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Other Details
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Languages : eng |
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