Interactions between small cetaceans and the purse-seine fishery in western Portuguese waters
Marine mammal interactions with Portuguese purse-seine fisheries operating in four different ports (Figueira da Foz, Sesimbra, Setúbal, Sines) were studied (July-October 2003). Observers accompanied commercial fishing vessels and monitored 48 fishing trips. An interview survey of skippers was also c...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2007-06-01
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| Series: | Scientia Marina |
| Subjects: | |
| Online Access: | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/19 |
| _version_ | 1818673219844964352 |
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| author | Laura Wise Alexandra Silva Marisa Ferreira Mónica A. Silva Marina Sequeira |
| author_facet | Laura Wise Alexandra Silva Marisa Ferreira Mónica A. Silva Marina Sequeira |
| author_sort | Laura Wise |
| collection | DOAJ |
| description | Marine mammal interactions with Portuguese purse-seine fisheries operating in four different ports (Figueira da Foz, Sesimbra, Setúbal, Sines) were studied (July-October 2003). Observers accompanied commercial fishing vessels and monitored 48 fishing trips. An interview survey of skippers was also carried out (n = 36). Three species of marine mammals were observed in 31 sightings during the commercials trips but only the species Delphinus delphis and the category Delphinidae were observed to interact with fishing activities. Small cetaceans were observed to sink, gather or disperse school fishes and damage gear. Mean CPUE and fishing effort values did not change significantly in the presence of dolphins (H = 0.06 and H = 0, both p>0.05). Results from Figueira da Foz indicate that cetaceans are attracted to fishing grounds with a high abundance of their prey-species. Fishermen reported three by-catch events off Figueira da Foz. Compared with other fisheries, purse-seine fishing does not seem to be among the most damaging to marine mammals. |
| first_indexed | 2024-12-17T07:52:19Z |
| format | Article |
| id | doaj.art-f83606914f034e9f88613891e438b551 |
| institution | Directory Open Access Journal |
| issn | 0214-8358 1886-8134 |
| language | English |
| last_indexed | 2024-12-17T07:52:19Z |
| publishDate | 2007-06-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Scientia Marina |
| spelling | doaj.art-f83606914f034e9f88613891e438b5512022-12-21T21:57:50ZengConsejo Superior de Investigaciones CientíficasScientia Marina0214-83581886-81342007-06-0171240541210.3989/scimar.2007.71n240519Interactions between small cetaceans and the purse-seine fishery in western Portuguese watersLaura Wise0Alexandra Silva1Marisa Ferreira2Mónica A. Silva3Marina Sequeira4INIAP-IPIMAR, LisboaINIAP-IPIMAR, LisboaInstituto da Conservação da Natureza, LisboaDepartamento de Oceanografia e Pescas, HortaInstituto da Conservação da Natureza, LisboaMarine mammal interactions with Portuguese purse-seine fisheries operating in four different ports (Figueira da Foz, Sesimbra, Setúbal, Sines) were studied (July-October 2003). Observers accompanied commercial fishing vessels and monitored 48 fishing trips. An interview survey of skippers was also carried out (n = 36). Three species of marine mammals were observed in 31 sightings during the commercials trips but only the species Delphinus delphis and the category Delphinidae were observed to interact with fishing activities. Small cetaceans were observed to sink, gather or disperse school fishes and damage gear. Mean CPUE and fishing effort values did not change significantly in the presence of dolphins (H = 0.06 and H = 0, both p>0.05). Results from Figueira da Foz indicate that cetaceans are attracted to fishing grounds with a high abundance of their prey-species. Fishermen reported three by-catch events off Figueira da Foz. Compared with other fisheries, purse-seine fishing does not seem to be among the most damaging to marine mammals.http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/19purse-seinefishing activitymarine mammalsinteraction |
| spellingShingle | Laura Wise Alexandra Silva Marisa Ferreira Mónica A. Silva Marina Sequeira Interactions between small cetaceans and the purse-seine fishery in western Portuguese waters Scientia Marina purse-seine fishing activity marine mammals interaction |
| title | Interactions between small cetaceans and the purse-seine fishery in western Portuguese waters |
| title_full | Interactions between small cetaceans and the purse-seine fishery in western Portuguese waters |
| title_fullStr | Interactions between small cetaceans and the purse-seine fishery in western Portuguese waters |
| title_full_unstemmed | Interactions between small cetaceans and the purse-seine fishery in western Portuguese waters |
| title_short | Interactions between small cetaceans and the purse-seine fishery in western Portuguese waters |
| title_sort | interactions between small cetaceans and the purse seine fishery in western portuguese waters |
| topic | purse-seine fishing activity marine mammals interaction |
| url | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/19 |
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