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Behaviour of Norwegian spring spawning herring in relation to underwater light

Beltestad, Arvid K.; Misund, Ole Arve
Working paper
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CM_1988_B_24.pdf (477.8Kb)
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http://hdl.handle.net/11250/104388
Utgivelsesdato
1988
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  • ICES CM documents authored by IMR scientists (1949-2011) [3139]
Originalversjon
This report is not to be cited without prior reference to the authors  
Sammendrag
The Norwegian coastal purse seiners, with shallow nets, have

experienced difficulties in catching the herring due to their

natura! behaviour being located too deep during day time and

toe scattered during night time. Experiments, conducted by

FTFI, have shown that scattered congregations of herring may

be concentrated by underwater light. When light was switched

on underneath the school, the herring immediately rose

towards the surface with a speed of approximately 20 m/min.

Use of underwater light to manipulate the natural behaviour

of herring would increase the efficiency, and consequently the

economic benefit for the costal purse seiners.
Utgiver
ICES
Serie
ICES CM Documents;1988/B:24

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