Reducing bycatch in the United States Gulf of Mexico shrimp trawl fishery with an emphasis on red snapper bycatch reduction
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Published source details
Parsons G.R. & Foster D.G. (2015) Reducing bycatch in the United States Gulf of Mexico shrimp trawl fishery with an emphasis on red snapper bycatch reduction. Fisheries Research, 167, 210-215.
Published source details Parsons G.R. & Foster D.G. (2015) Reducing bycatch in the United States Gulf of Mexico shrimp trawl fishery with an emphasis on red snapper bycatch reduction. Fisheries Research, 167, 210-215.
Actions
This study is summarised as evidence for the following.
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Fit large, supported escape openings (such as Fisheyes, Bigeyes and radial escape sections) to trawl nets Action Link |
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Fit large, supported escape openings (such as Fisheyes, Bigeyes and radial escape sections) to trawl nets
A replicated, paired, controlled study in 2007–2011 in an area of seabed in the Gulf of Mexico, USA (Parsons & Foster 2015) found that fitting a large escape opening (nested cylinder design) to a shrimp trawl net reduced the unwanted catch of immature red snapper Lutjanus campechanus, compared to a standard net. Across both trials, catch numbers of red snapper were lower in nets with escape openings compared to without (with: 638–877 fish, without: 1,197–1,265). Data were collected from paired trawl deployments carried out on commercial shrimp vessels, in September 2007 off Mississippi (32 deployments) and November 2011 off Texas (32 deployments). One side of a pair of shrimp trawl nets was fitted with a large escape opening design (nested cylinder bycatch reduction device) and the trawl net on other side had no escape opening device (see original paper for gear specifications). Tows were 2–6 hours. Numbers of all immature red snapper caught in each trawl codend were recorded.
(Summarised by: Chris Barrett)
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