Bait defence behaviour of wolffish and its impact on long-line catch rates
During an acoustic tagging experiment on cod in the Barents Sea in March 1995 a hierarchy among fish species was revealed, in which a wolffish ( Anarhichas sp.) was observed to be dominant in relation to cod and haddock. When wolffish are present in the odour field of a bait, the aggressive bait-def...
| Published in: | ICES Journal of Marine Science |
|---|---|
| Main Authors: | , , |
| Format: | Text |
| Language: | English |
| Published: |
Oxford University Press
1997
|
| Subjects: | |
| Online Access: | http://icesjms.oxfordjournals.org/cgi/content/short/54/2/273 https://doi.org/10.1006/jmsc.1996.0167 |
| Summary: | During an acoustic tagging experiment on cod in the Barents Sea in March 1995 a hierarchy among fish species was revealed, in which a wolffish ( Anarhichas sp.) was observed to be dominant in relation to cod and haddock. When wolffish are present in the odour field of a bait, the aggressive bait-defence behaviour of this species might reduce the hooking rate for other species. If long-line catch data are used for stock assessment purposes, the presence of wolffish might reduce the catchability coefficient (q) of other species, in this case cod and haddock. |
|---|