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...
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doaj-567f51c6f7f54e2695637b42c2e05b212020-11-25T00:12:09ZengPeerJ Inc.PeerJ2167-83592018-01-016e422310.7717/peerj.4223Using underwater video to evaluate the performance of the Fukui trap as a mitigation tool for the invasive European green crab (Carcinus maenas) in Newfoundland, CanadaJonathan A. Bergshoeff0Cynthia H. McKenzie1Kiley Best2Nicola Zargarpour3Brett Favaro4Department of Ocean Sciences, Memorial University of Newfoundland, St. John’s, Newfoundland and Labrador, CanadaDepartment of Ocean Sciences, Memorial University of Newfoundland, St. John’s, Newfoundland and Labrador, CanadaCentre for Fisheries and Ecosystems Research, Fisheries and Marine Institute of Memorial University of Newfoundland, St. John’s, Newfoundland and Labrador, CanadaDepartment of Ocean Sciences, Memorial University of Newfoundland, St. John’s, Newfoundland and Labrador, CanadaDepartment of Ocean Sciences, Memorial University of Newfoundland, St. John’s, Newfoundland and Labrador, CanadaThe 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 previously assessed. We assessed Fukui traps using in situ observation with underwater video cameras as they actively fished for green crabs. From these videos, we recorded the number of green crabs that approached the trap, the outcome of each entry attempt (success or failure), and the number of exits from the trap. Across eight videos, we observed 1,226 green crab entry attempts, with only a 16% rate of success from these attempts. Based on these observations we believe there is scope to improve the performance of the Fukui trap through modifications in order to achieve a higher catch per unit effort (CPUE), maximizing trap usage for mitigation. Ultimately, a more efficient Fukui trap will help to control green crab populations in order to preserve the function and integrity of ecosystems invaded by the green crab.https://peerj.com/articles/4223.pdfGreen shore crabPortunidaeInvasive speciesAIS controlCrustaceanUnderwater cameras |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jonathan A. Bergshoeff Cynthia H. McKenzie Kiley Best Nicola Zargarpour Brett Favaro |
spellingShingle |
Jonathan A. Bergshoeff Cynthia H. McKenzie Kiley Best Nicola Zargarpour Brett Favaro 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 PeerJ Green shore crab Portunidae Invasive species AIS control Crustacean Underwater cameras |
author_facet |
Jonathan A. Bergshoeff Cynthia H. McKenzie Kiley Best Nicola Zargarpour Brett Favaro |
author_sort |
Jonathan A. Bergshoeff |
title |
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 |
title_short |
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 |
title_full |
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 |
title_fullStr |
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 |
title_full_unstemmed |
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 |
title_sort |
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 |
publisher |
PeerJ Inc. |
series |
PeerJ |
issn |
2167-8359 |
publishDate |
2018-01-01 |
description |
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 previously assessed. We assessed Fukui traps using in situ observation with underwater video cameras as they actively fished for green crabs. From these videos, we recorded the number of green crabs that approached the trap, the outcome of each entry attempt (success or failure), and the number of exits from the trap. Across eight videos, we observed 1,226 green crab entry attempts, with only a 16% rate of success from these attempts. Based on these observations we believe there is scope to improve the performance of the Fukui trap through modifications in order to achieve a higher catch per unit effort (CPUE), maximizing trap usage for mitigation. Ultimately, a more efficient Fukui trap will help to control green crab populations in order to preserve the function and integrity of ecosystems invaded by the green crab. |
topic |
Green shore crab Portunidae Invasive species AIS control Crustacean Underwater cameras |
url |
https://peerj.com/articles/4223.pdf |
work_keys_str_mv |
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