Development and testing of a species-selective flatfish ottertrawl to reduce cod bycatches

The objective of this project was to develop a trawl suitable for directed fisheries for flatfish that would reduce cod bycatch. A selective flatfish trawl was developed and tested in a flume tank. A sea trial was conducted in the Danish plaice fishery in the Skagerrak and two sea trials were run on...

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Bibliographic Details
Published in:Fisheries research 2006-05, Vol.78 (2), p.298-308
Main Authors: Madsen, N., Tschernij, V., Hansen, K., Larsson, P.-O.
Format: Article
Language:English
Subjects:
Agnatha. Pisces
Animal, plant and microbial ecology
Applied ecology
Baltic sea
Biological and medical sciences
Bycatch
Cod
Exploitation and management of natural biological resources (hunting, fishing and exploited populations survey, etc.)
Flounder
Fundamental and applied biological sciences. Psychology
Gadus morhua
Marine
Plaice
Platichthys flesus
Pleuronectiformes
Selectivity
Skagerrak
Trawl
Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
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Summary:The objective of this project was to develop a trawl suitable for directed fisheries for flatfish that would reduce cod bycatch. A selective flatfish trawl was developed and tested in a flume tank. A sea trial was conducted in the Danish plaice fishery in the Skagerrak and two sea trials were run on the Baltic sea flounder fishery. The catches from the selective flatfish trawl were compared to catches made with a conventional flatfish trawl. The selective flatfish trawl caught more plaice and reduced the cod bycatch, particularly those smaller than the minimum landing size in the Skagerrak sea trials, compared to the conventional flatfish trawl. The selective flatfish trawl caught more flounder and reduced cod bycatch during two sea trials in the Baltic sea. Hence, this selective flatfish trawl appears to be a useful management tool to substantially reduce bycatch of cod in a directed plaice or flounder fishery.
ISSN:0165-7836
1872-6763
DOI:10.1016/j.fishres.2006.01.002