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A year-long trial of a square mesh panel in a commercial demersal trawl
- Source :
-
Fisheries Research . Jan2007, Vol. 83 Issue 1, p105-112. 8p. - Publication Year :
- 2007
-
Abstract
- Abstract: Trials were carried out to evaluate the effects of a square mesh panel on the catches of a demersal trawl during normal commercial fishing operations over a period of 1 year. A 100mm cod-end fitted with a 90mm mesh square mesh panel between 6.3 and 9.3m from the cod-line was compared with an identical cod-end with no panel, attached to the same net, using the alternate haul method. The square mesh panel significantly reduced the catch of undersized whiting (by an estimated 34%; p <0.001) and of whiting greater than the minimum landing size up to lengths of about 32cm (p <0.05). However, the square mesh panel had no significant effect on the catches of haddock, cod or monkfish. Hauls with a small-mesh cod-end showed that large numbers of small haddock were present in the areas where the trials were carried out. Few of these fish were retained by the normal cod-end, either with or without the square-mesh panel, suggesting that fitting the square mesh panel did not appreciably improve the selectivity of the cod-end design used in these trials. [Copyright &y& Elsevier]
- Subjects :
- *CODFISH
*FISHERIES
*FISHING
*AQUATIC resources
Subjects
Details
- Language :
- English
- ISSN :
- 01657836
- Volume :
- 83
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Fisheries Research
- Publication Type :
- Academic Journal
- Accession number :
- 23279357
- Full Text :
- https://doi.org/10.1016/j.fishres.2006.09.008