Differences in Dolphin Mortality Rates in Night and Day Sets for the U.S. Eastern Tropical Pacific Tuna Purse Seine Fishery
Because dolphins sometimes travel with yellowfin tuna, Thunnus albacares, in the eastern tropical Pacific (ETP), purse seiners use the dolphins to locate and capture tuna schools. During the process of setting the purse seine nets, dolphins often become entangled and drown before they can be released. Data for the U.S. purse seine fleet in the ETP during 1979-88 show that dolphin mortality rates in sets made during the night are higher than mortality rates in sets made during the day. Even with efforts to reduce nightset mortality rates through the use of high intensity floodlights, night set mortality rates remain higher. The data are also used to simulate a regulation on the fishery aimed at eliminating night sets and show that dolphin mortality rates would decrease.
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| Format: | article biblioteca |
| Language: | English |
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1992
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| Subjects: | Conservation, Fisheries, Management, |
| Online Access: | http://hdl.handle.net/1834/26519 |
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dig-aquadocs-1834-265192021-06-26T06:08:20Z Differences in Dolphin Mortality Rates in Night and Day Sets for the U.S. Eastern Tropical Pacific Tuna Purse Seine Fishery Coan, Jr. , Atilio L. Wallace, Kenneth E. Jackson , Alan R. Conservation Fisheries Management Because dolphins sometimes travel with yellowfin tuna, Thunnus albacares, in the eastern tropical Pacific (ETP), purse seiners use the dolphins to locate and capture tuna schools. During the process of setting the purse seine nets, dolphins often become entangled and drown before they can be released. Data for the U.S. purse seine fleet in the ETP during 1979-88 show that dolphin mortality rates in sets made during the night are higher than mortality rates in sets made during the day. Even with efforts to reduce nightset mortality rates through the use of high intensity floodlights, night set mortality rates remain higher. The data are also used to simulate a regulation on the fishery aimed at eliminating night sets and show that dolphin mortality rates would decrease. 2021-06-24T16:27:21Z 2021-06-24T16:27:21Z 1992 article TRUE 0090-1830 http://hdl.handle.net/1834/26519 en http://spo.nmfs.noaa.gov/mfr542/mfr5422.pdf application/pdf application/pdf 7-14 http://aquaticcommons.org/id/eprint/9895 403 2012-08-20 12:37:12 9895 United States National Marine Fisheries Service |
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Conservation Fisheries Management Conservation Fisheries Management |
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Conservation Fisheries Management Conservation Fisheries Management Coan, Jr. , Atilio L. Wallace, Kenneth E. Jackson , Alan R. Differences in Dolphin Mortality Rates in Night and Day Sets for the U.S. Eastern Tropical Pacific Tuna Purse Seine Fishery |
| description |
Because dolphins sometimes travel with yellowfin tuna, Thunnus albacares, in the eastern tropical Pacific (ETP), purse seiners use the dolphins to locate and capture tuna schools. During the process of setting the purse seine nets, dolphins often become entangled and drown before they can be released. Data for the U.S. purse seine fleet in the ETP during 1979-88 show that dolphin mortality rates in sets made during the night are higher than mortality rates in sets made during the day. Even with efforts to reduce nightset mortality rates through the use of high intensity floodlights, night set mortality rates remain higher. The data are also used to simulate a regulation on the fishery aimed at eliminating night sets and show that dolphin mortality rates would decrease. |
| format |
article |
| topic_facet |
Conservation Fisheries Management |
| author |
Coan, Jr. , Atilio L. Wallace, Kenneth E. Jackson , Alan R. |
| author_facet |
Coan, Jr. , Atilio L. Wallace, Kenneth E. Jackson , Alan R. |
| author_sort |
Coan, Jr. , Atilio L. |
| title |
Differences in Dolphin Mortality Rates in Night and Day Sets for the U.S. Eastern Tropical Pacific Tuna Purse Seine Fishery |
| title_short |
Differences in Dolphin Mortality Rates in Night and Day Sets for the U.S. Eastern Tropical Pacific Tuna Purse Seine Fishery |
| title_full |
Differences in Dolphin Mortality Rates in Night and Day Sets for the U.S. Eastern Tropical Pacific Tuna Purse Seine Fishery |
| title_fullStr |
Differences in Dolphin Mortality Rates in Night and Day Sets for the U.S. Eastern Tropical Pacific Tuna Purse Seine Fishery |
| title_full_unstemmed |
Differences in Dolphin Mortality Rates in Night and Day Sets for the U.S. Eastern Tropical Pacific Tuna Purse Seine Fishery |
| title_sort |
differences in dolphin mortality rates in night and day sets for the u.s. eastern tropical pacific tuna purse seine fishery |
| publishDate |
1992 |
| url |
http://hdl.handle.net/1834/26519 |
| work_keys_str_mv |
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| _version_ |
1756078173864329216 |