Interactions between marine mammals and pelagic longline fishing gear in the U.S. Atlantic Ocean between 1992 and 2004
The U.S. East Coast pelagic longline fishery has a history of interactions with marine mammals, where animals are hooked and entangled in longline gear. Pilot whales (Globicephala spp.) and Risso’s dolphin (Grampus griseus) are the primary species that interact with longline gear. Logistic regression was used to assess the environmental and gear characteristics that influence interaction rates. Pilot whale inter-actions were correlated with warm water temperatures, proximity to the shelf break, mainline lengths greater than 20 nautical miles, and damage to swordfish catch. Similarly, Risso’s dolphin interactions were correlated with geographic location, proximity the shelf break, the length of the mainline, and bait type. The incidental bycatch of marine mammals is likely associated with depredation of the commercial catch and is increased by the overlap between marine mammal and target species habitats. Altering gear characteristics and fishery practices may mitigate incidental bycatch and reduce economic losses due to depredation.
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Format: | article biblioteca |
Language: | English |
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2007
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Subjects: | Biology, Ecology, Fisheries, |
Online Access: | http://hdl.handle.net/1834/25527 |
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dig-aquadocs-1834-255272021-06-29T01:56:20Z Interactions between marine mammals and pelagic longline fishing gear in the U.S. Atlantic Ocean between 1992 and 2004 Garrison, Lance P. Biology Ecology Fisheries The U.S. East Coast pelagic longline fishery has a history of interactions with marine mammals, where animals are hooked and entangled in longline gear. Pilot whales (Globicephala spp.) and Risso’s dolphin (Grampus griseus) are the primary species that interact with longline gear. Logistic regression was used to assess the environmental and gear characteristics that influence interaction rates. Pilot whale inter-actions were correlated with warm water temperatures, proximity to the shelf break, mainline lengths greater than 20 nautical miles, and damage to swordfish catch. Similarly, Risso’s dolphin interactions were correlated with geographic location, proximity the shelf break, the length of the mainline, and bait type. The incidental bycatch of marine mammals is likely associated with depredation of the commercial catch and is increased by the overlap between marine mammal and target species habitats. Altering gear characteristics and fishery practices may mitigate incidental bycatch and reduce economic losses due to depredation. 2021-06-24T16:20:45Z 2021-06-24T16:20:45Z 2007 article TRUE 0090-0656 http://hdl.handle.net/1834/25527 en http://fishbull.noaa.gov/1053/garrison.pdf application/pdf application/pdf 408-417 http://aquaticcommons.org/id/eprint/8883 403 2012-06-18 09:34:41 8883 United States National Marine Fisheries Service |
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Biology Ecology Fisheries Biology Ecology Fisheries Garrison, Lance P. Interactions between marine mammals and pelagic longline fishing gear in the U.S. Atlantic Ocean between 1992 and 2004 |
description |
The U.S. East Coast pelagic longline fishery has a history of interactions with marine mammals, where animals are hooked and entangled in longline gear. Pilot whales (Globicephala spp.) and Risso’s dolphin (Grampus griseus) are the primary species that interact with longline gear. Logistic regression was used to assess the environmental and gear characteristics that influence interaction rates. Pilot whale inter-actions were correlated with warm water temperatures, proximity to the shelf break, mainline lengths greater than 20 nautical miles, and damage to swordfish catch. Similarly, Risso’s dolphin interactions were correlated with geographic location, proximity the shelf break, the length of the mainline, and bait type. The incidental bycatch of marine mammals is likely associated with depredation of the commercial catch and is increased by the overlap between marine mammal and target species habitats. Altering gear characteristics and fishery practices may mitigate incidental bycatch and reduce economic losses due to depredation. |
format |
article |
topic_facet |
Biology Ecology Fisheries |
author |
Garrison, Lance P. |
author_facet |
Garrison, Lance P. |
author_sort |
Garrison, Lance P. |
title |
Interactions between marine mammals and pelagic longline fishing gear in the U.S. Atlantic Ocean between 1992 and 2004 |
title_short |
Interactions between marine mammals and pelagic longline fishing gear in the U.S. Atlantic Ocean between 1992 and 2004 |
title_full |
Interactions between marine mammals and pelagic longline fishing gear in the U.S. Atlantic Ocean between 1992 and 2004 |
title_fullStr |
Interactions between marine mammals and pelagic longline fishing gear in the U.S. Atlantic Ocean between 1992 and 2004 |
title_full_unstemmed |
Interactions between marine mammals and pelagic longline fishing gear in the U.S. Atlantic Ocean between 1992 and 2004 |
title_sort |
interactions between marine mammals and pelagic longline fishing gear in the u.s. atlantic ocean between 1992 and 2004 |
publishDate |
2007 |
url |
http://hdl.handle.net/1834/25527 |
work_keys_str_mv |
AT garrisonlancep interactionsbetweenmarinemammalsandpelagiclonglinefishinggearintheusatlanticoceanbetween1992and2004 |
_version_ |
1756078041594855424 |