Survival of Discarded Sublegal Atlantic Cod in the Northwest Atlantic Demersal Longline Fishery
Abstract The survival of sublegal Atlantic cod Gadus morhua discarded in the U.S. Northwest Atlantic demersal longline fishery was examined for the effects that handling technique, sea surface temperature, and capture depth have on it. Longline‐caught Atlantic cod were either removed from the hook b...
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Online Access: | http://dx.doi.org/10.1577/m08-008.1 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/M08-008.1 |
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crwiley:10.1577/m08-008.1 2023-12-03T10:18:53+01:00 Survival of Discarded Sublegal Atlantic Cod in the Northwest Atlantic Demersal Longline Fishery Milliken, Henry O. Farrington, Marianne Rudolph, Tom Sanderson, Melissa 2009 http://dx.doi.org/10.1577/m08-008.1 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/M08-008.1 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor North American Journal of Fisheries Management volume 29, issue 4, page 985-995 ISSN 0275-5947 1548-8675 Management, Monitoring, Policy and Law Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2009 crwiley https://doi.org/10.1577/m08-008.1 2023-11-09T14:10:46Z Abstract The survival of sublegal Atlantic cod Gadus morhua discarded in the U.S. Northwest Atlantic demersal longline fishery was examined for the effects that handling technique, sea surface temperature, and capture depth have on it. Longline‐caught Atlantic cod were either removed from the hook by hand (unsnubbed) or by allowing the hydraulic hauler to pull the fish against the parallel steel cylinders placed vertically on the gunwale, causing the hook to pull through the jaw (snubbed). Jigged‐caught fish served as an indicator of mortality occurring because of the experimental design in the survival experiments. Once caught, live fish were placed in underwater cages, and short‐term survival was assessed after holding the fish for 3 d (approximately 72 h). Survival was analyzed with respect to three water depths and four sea surface temperature (SST) strata. Atlantic cod survival in these strata ranged from 31% to 100%. Depth and SST affected survival more than the dehooking technique; survival was higher in shallow depths and at lower temperatures. Unsnubbed fish had higher survival rates than snubbed fish. Article in Journal/Newspaper atlantic cod Gadus morhua Northwest Atlantic Wiley Online Library (via Crossref) North American Journal of Fisheries Management 29 4 985 995 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Management, Monitoring, Policy and Law Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Management, Monitoring, Policy and Law Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Milliken, Henry O. Farrington, Marianne Rudolph, Tom Sanderson, Melissa Survival of Discarded Sublegal Atlantic Cod in the Northwest Atlantic Demersal Longline Fishery |
topic_facet |
Management, Monitoring, Policy and Law Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract The survival of sublegal Atlantic cod Gadus morhua discarded in the U.S. Northwest Atlantic demersal longline fishery was examined for the effects that handling technique, sea surface temperature, and capture depth have on it. Longline‐caught Atlantic cod were either removed from the hook by hand (unsnubbed) or by allowing the hydraulic hauler to pull the fish against the parallel steel cylinders placed vertically on the gunwale, causing the hook to pull through the jaw (snubbed). Jigged‐caught fish served as an indicator of mortality occurring because of the experimental design in the survival experiments. Once caught, live fish were placed in underwater cages, and short‐term survival was assessed after holding the fish for 3 d (approximately 72 h). Survival was analyzed with respect to three water depths and four sea surface temperature (SST) strata. Atlantic cod survival in these strata ranged from 31% to 100%. Depth and SST affected survival more than the dehooking technique; survival was higher in shallow depths and at lower temperatures. Unsnubbed fish had higher survival rates than snubbed fish. |
format |
Article in Journal/Newspaper |
author |
Milliken, Henry O. Farrington, Marianne Rudolph, Tom Sanderson, Melissa |
author_facet |
Milliken, Henry O. Farrington, Marianne Rudolph, Tom Sanderson, Melissa |
author_sort |
Milliken, Henry O. |
title |
Survival of Discarded Sublegal Atlantic Cod in the Northwest Atlantic Demersal Longline Fishery |
title_short |
Survival of Discarded Sublegal Atlantic Cod in the Northwest Atlantic Demersal Longline Fishery |
title_full |
Survival of Discarded Sublegal Atlantic Cod in the Northwest Atlantic Demersal Longline Fishery |
title_fullStr |
Survival of Discarded Sublegal Atlantic Cod in the Northwest Atlantic Demersal Longline Fishery |
title_full_unstemmed |
Survival of Discarded Sublegal Atlantic Cod in the Northwest Atlantic Demersal Longline Fishery |
title_sort |
survival of discarded sublegal atlantic cod in the northwest atlantic demersal longline fishery |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1577/m08-008.1 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/M08-008.1 |
genre |
atlantic cod Gadus morhua Northwest Atlantic |
genre_facet |
atlantic cod Gadus morhua Northwest Atlantic |
op_source |
North American Journal of Fisheries Management volume 29, issue 4, page 985-995 ISSN 0275-5947 1548-8675 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1577/m08-008.1 |
container_title |
North American Journal of Fisheries Management |
container_volume |
29 |
container_issue |
4 |
container_start_page |
985 |
op_container_end_page |
995 |
_version_ |
1784265998152499200 |