Using underwater video to evaluate the performance of the Fukui trap as a mitigation tool for the invasive European green crab (Carcinus maenas) in Newfoundland, Canada (#20010)
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چکیده
20 The European green crab (Carcinus maenas) is a destructive marine invader that was first 21 discovered in Newfoundland waters in 2007 and has since become established in nearshore 22 ecosystems on the south and west coast of the island. Targeted fishing programs aimed at 23 removing green crabs from invaded Newfoundland ecosystems use Fukui traps, but the capture 24 efficiency of these traps has not been previously assessed. We assessed Fukui traps using in situ 25 observation with underwater video cameras as they actively fished for green crabs. From these 26 videos, we recorded the number of green crabs that approached the trap, the outcome of each 27 entry attempt (success or failure), and the number of exits from the trap. Across eight videos, we 28 observed 1,226 green crab entry attempts, with only a 16% rate of success from these attempts. 29 Based on these observations we believe there is scope to improve the performance of the Fukui 30 trap through modifications in order to achieve a higher catch per unit effort (CPUE), maximizing 31 trap usage for mitigation. Ultimately, a more efficient Fukui trap will help to control green crab 32 populations in order to preserve the function and integrity of ecosystems invaded by the green 33 crab. 34 PeerJ reviewing PDF | (2017:08:20010:1:0:CHECK 9 Dec 2017) Manuscript to be reviewed
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Using underwater video to evaluate the performance of the Fukui trap as a mitigation tool for the invasive European green crab (Carcinus maenas) in Newfoundland, Canada (#20010)
متن کامل
Using underwater video to evaluate the performance of the Fukui trap as a mitigation tool for the invasive European green crab (Carcinus maenas) in Newfoundland, Canada (#20010)
متن کامل
Using underwater video to evaluate the performance of the Fukui trap as a mitigation tool for the invasive European green crab (Carcinus maenas) in Newfoundland, Canada
The European green crab (Carcinus maenas) is a destructive marine invader that was first discovered in Newfoundland waters in 2007 and has since become established in nearshore ecosystems on the south and west coast of the island. Targeted fishing programs aimed at removing green crabs from invaded Newfoundland ecosystems use Fukui traps, but the capture efficiency of these traps has not been p...
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The Department of Fisheries and Oceans in Canada is experimenting with a commercial fishery on the European green crab (Carcinus maenas), an invasive species in North America, to help reduce the negative impact this animal has on ecosystems and native shellfish populations. We determined the break-even price that fishers would require for green crabs under different fishing scenarios (i.e. diff...
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