Preliminary estimate of incidental mortality of commerson s dolphins (cephalorhynchus commersonii) in an artisanal setnet fishery in la Angelina beach and ría gallegos, Santa Cruz, Argentina
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da FURG (RI FURG) |
Texto Completo: | http://repositorio.furg.br/handle/1/3187 |
Resumo: | The Commerson’s dolphin, Cephalorhynchus commersonii, is perhaps the cetacean species most impacted by fisheries in the coastal waters of southern South America, south of 41ºS. Between January 1999 and February 2000, 66 Commerson´s dolphins were found dead on the coasts of La Angelina and Ría Gallegos3, and at least 37 of the ones at La Angelina beach (51º20’S, 069º02’W) were caught incidentally. These captures occurred in gill nets that were set in waters shallower than 15m and mainly for Patagonian blenny (Eleginops maclovinus), silversides (Odonthestes nigricans) and parona leatherjack (Parona signata). The season for set net fishing, extending from the end of August to mid February, overlaps with the breeding season (November- February) of Commerson’s dolphins, which is also when this species moves inshore. The estimated catch per unit of effort (CPUE) for gillnets in the area of La Angelina was 0.229 dolphins x (1,000m of net x set)-1. By extrapolation, the estimated total by-catch during the 1999/2000 fishing season in the region of La Angelina and Ría Gallegos was 179 dolphins (SD = 18.8; CI = 141 - 212). Although no abundance estimation of Commerson’s dolphins in this region is available, the estimated level of bycatch is concerning. Recommendations for action to mitigate and further document the impact of set gillnets are presented. |
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Iñiguez, Miguel AngelHevia, MartaGasparrou, CeciliaTomsin, AnaSecchi, Eduardo Resende2013-03-22T14:23:08Z2013-03-22T14:23:08Z2003INIGUEZ, Miguel Angel et al. Preliminary estimate of incidental mortality of commerson s dolphins (cephalorhynchus commersonii) in an artisanal setnet fishery in la Angelina beach and ría gallegos, Santa Cruz, Argentina. Latin American Journal of Aquatic Mammals, v. 2, n. 2, p. 87-94, 2003. Disponível em: <http://www.marineconnection.org/docs/Commerson's%20bycatch%20in%20Argentina.pdf>. Acesso em: 20 fev. 2013.1676-7497http://repositorio.furg.br/handle/1/3187The Commerson’s dolphin, Cephalorhynchus commersonii, is perhaps the cetacean species most impacted by fisheries in the coastal waters of southern South America, south of 41ºS. Between January 1999 and February 2000, 66 Commerson´s dolphins were found dead on the coasts of La Angelina and Ría Gallegos3, and at least 37 of the ones at La Angelina beach (51º20’S, 069º02’W) were caught incidentally. These captures occurred in gill nets that were set in waters shallower than 15m and mainly for Patagonian blenny (Eleginops maclovinus), silversides (Odonthestes nigricans) and parona leatherjack (Parona signata). The season for set net fishing, extending from the end of August to mid February, overlaps with the breeding season (November- February) of Commerson’s dolphins, which is also when this species moves inshore. The estimated catch per unit of effort (CPUE) for gillnets in the area of La Angelina was 0.229 dolphins x (1,000m of net x set)-1. By extrapolation, the estimated total by-catch during the 1999/2000 fishing season in the region of La Angelina and Ría Gallegos was 179 dolphins (SD = 18.8; CI = 141 - 212). Although no abundance estimation of Commerson’s dolphins in this region is available, the estimated level of bycatch is concerning. Recommendations for action to mitigate and further document the impact of set gillnets are presented.La tonina overa, Cephalorhynchus commersonii, se distribuye en aguas costeras del sur de Sudamérica, al sur de los 41donde es quizás la especie de cetáceos que mayor impacto ha tenido Entre enero de 1999 y febrero de 2000, se encontraron 66 Toninas overas muertas en la costa de La Angelina y de la Ría Gallegos, y al menos 37 de ellas fueron capturadas incidentalmente en la playa de La Angelina (51º20’S, 069º02’W). Estas capturas ocurrieron en redes para róbalo (Eleginops maclovinus), pejerrey (Odonthestes nigricans) y palometa pintada (Parona signata) principalmente. La temporada de pesca se extiende desde los últimos días de agosto hasta mediados de febrero, superponiéndose con la temporada reproductiva de la tonina overa (noviembre-febrero) cuando estos animales se desplazan hacia aguas costeras. Las capturas ocurrieron en aguas de menos de 15 metros de profundidad. La captura por unidad de esfuerzo (CPUE) estimada para las redes agalleras en el área de La Angelina fue de 0,229 delfines x (1000m de red x lance)-1. Extrapolando, se estimó una captura incidental total de aproximadamente 179 delfines (DS = 18,8; CI = 141 – 212) durante la temporada de pesca 1999/2000 en la región de La Angelina y Ría Gallegos. Aunque no se dispone de una estimación de abundancia de toninas overas en esta región, la captura incidental estimada es preocupante. Se presentan recomendaciones para mitigar y documentar el impacto de las redes agalleras sobre la especie.engCommerson´s dolphinIncidental catchesFisheriesCatch per unit effortPatagonia ArgentinaPreliminary estimate of incidental mortality of commerson s dolphins (cephalorhynchus commersonii) in an artisanal setnet fishery in la Angelina beach and ría gallegos, Santa Cruz, Argentinainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da FURG (RI FURG)instname:Universidade Federal do Rio Grande (FURG)instacron:FURGORIGINALPRELIMINARY ESTIMATE OF INCIDENTAL MORTALITY OF COMMERSON S DOLPHINS.pdfPRELIMINARY ESTIMATE OF INCIDENTAL MORTALITY OF COMMERSON S DOLPHINS.pdfapplication/pdf1421595https://repositorio.furg.br/bitstream/1/3187/1/PRELIMINARY%20ESTIMATE%20OF%20INCIDENTAL%20MORTALITY%20OF%20COMMERSON%20S%20DOLPHINS.pdf35956cd26c9bf711abb5d507886d6e96MD51open accessLICENSElicense.txtlicense.txttext/plain; charset=utf-81678https://repositorio.furg.br/bitstream/1/3187/2/license.txtd3be63d3b3eee02729709361dac69efeMD52open access1/31872013-03-22 11:23:08.736open accessoai:repositorio.furg.br:1/318777+9IG5lY2Vzc++/vXJpbyBjb25jb3JkYXIgY29tIGEgbGljZW7vv71hIGRlIGRpc3RyaWJ1ae+/ve+/vW8gbu+/vW8tZXhjbHVzaXZhLAphbnRlcyBxdWUgbyBkb2N1bWVudG8gcG9zc2EgYXBhcmVjZXIgbm8gUmVwb3NpdO+/vXJpby4gUG9yIGZhdm9yLCBsZWlhIGEKbGljZW7vv71hIGF0ZW50YW1lbnRlLiBDYXNvIG5lY2Vzc2l0ZSBkZSBhbGd1bSBlc2NsYXJlY2ltZW50byBlbnRyZSBlbQpjb250YXRvIGF0cmF277+9cyBkZTogcmVwb3NpdG9yaW9AZnVyZy5iciBvdSAweHggNTMgMzIzMy02NzA2LgoKTElDRU7vv71BIERFIERJU1RSSUJVSe+/ve+/vU8gTu+/vU8tRVhDTFVTSVZBCgpBbyBhc3NpbmFyIGUgZW50cmVnYXIgZXN0YSBsaWNlbu+/vWEsIG8vYSBTci4vU3JhLiAoYXV0b3Igb3UgZGV0ZW50b3IgZG9zIGRpcmVpdG9zIGRlIGF1dG9yKToKCmEpIENvbmNlZGUg77+9IFVuaXZlcnNpZGFkZSBGZWRlcmFsIGRlIFJpbyBHcmFuZGUgLSAgRlVSRyBvIGRpcmVpdG8gbu+/vW8tZXhjbHVzaXZvIGRlIHJlcHJvZHV6aXIsIGNvbnZlcnRlciAoY29tbyBkZWZpbmlkbyBhYmFpeG8pLCBjb211bmljYXIgZS9vdSBkaXN0cmlidWlyIG8gZG9jdW1lbnRvIGVudHJlZ3VlIChpbmNsdWluZG8gbyByZXN1bW8vYWJzdHJhY3QpIGVtCmZvcm1hdG8gZGlnaXRhbCBvdSBpbXByZXNzbyBlIGVtIHF1YWxxdWVyIG1laW8uCgpiKSBEZWNsYXJhIHF1ZSBvIGRvY3VtZW50byBlbnRyZWd1ZSDvv70gc2V1IHRyYWJhbGhvIG9yaWdpbmFsLCBlIHF1ZQpkZXTvv71tIG8gZGlyZWl0byBkZSBjb25jZWRlciBvcyBkaXJlaXRvcyBjb250aWRvcyBuZXN0YSBsaWNlbu+/vWEuIERlY2xhcmEgdGFtYu+/vW0gcXVlIGEgZW50cmVnYSBkbyBkb2N1bWVudG8gbu+/vW8gaW5mcmluZ2UsIHRhbnRvIHF1YW50byBsaGUg77+9IHBvc3Pvv712ZWwgc2FiZXIsIG9zIGRpcmVpdG9zIGRlIHF1YWxxdWVyIG91dHJhIHBlc3NvYSBvdSBlbnRpZGFkZS4KCmMpIFNlIG8gZG9jdW1lbnRvIGVudHJlZ3VlIGNvbnTvv71tIG1hdGVyaWFsIGRvIHF1YWwgbu+/vW8gZGV077+9bSBvcwpkaXJlaXRvcyBkZSBhdXRvciwgZGVjbGFyYSBxdWUgb2J0ZXZlIGF1dG9yaXph77+977+9byBkbyBkZXRlbnRvciBkb3MKZGlyZWl0b3MgZGUgYXV0b3IgcGFyYSBjb25jZWRlciDvv70gRlVSRyBvcyBkaXJlaXRvcyByZXF1ZXJpZG9zIHBvciBlc3RhIGxpY2Vu77+9YSwgZSBxdWUgZXNzZSBtYXRlcmlhbCBjdWpvcyBkaXJlaXRvcyBz77+9byBkZSB0ZXJjZWlyb3MgZXN077+9IGNsYXJhbWVudGUgaWRlbnRpZmljYWRvIGUgcmVjb25oZWNpZG8gbm8gdGV4dG8gb3UgY29udGXvv71kbyBkbyBkb2N1bWVudG8gZW50cmVndWUuCgpTZSBvIGRvY3VtZW50byBlbnRyZWd1ZSDvv70gYmFzZWFkbyBlbSB0cmFiYWxobyBmaW5hbmNpYWRvIG91IGFwb2lhZG8KcG9yIG91dHJhIGluc3RpdHVp77+977+9byBxdWUgbu+/vW8gYSBGVVJHLCBkZWNsYXJhIHF1ZSBjdW1wcml1IHF1YWlzcXVlciBvYnJpZ2Hvv73vv71lcyBleGlnaWRhcyBwZWxvIHJlc3BlY3Rpdm8gY29udHJhdG8gb3UgYWNvcmRvLgoKQSBGVVJHIGlkZW50aWZpY2Fy77+9IGNsYXJhbWVudGUgbyhzKSBzZXUgKHMpIG5vbWUgKHMpIGNvbW8gbyAocykgYXV0b3IgKGVzKSBvdSBkZXRlbnRvciAoZXMpIGRvcyBkaXJlaXRvcyBkbyBkb2N1bWVudG8gZW50cmVndWUsIGUgbu+/vW8gZmFy77+9IHF1YWxxdWVyIGFsdGVyYe+/ve+/vW8sIHBhcmEgYWzvv71tIGRhcyBwZXJtaXRpZGFzIHBvciBlc3RhIGxpY2Vu77+9YS4KRepositório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2013-03-22T14:23:08Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false |
dc.title.pt_BR.fl_str_mv |
Preliminary estimate of incidental mortality of commerson s dolphins (cephalorhynchus commersonii) in an artisanal setnet fishery in la Angelina beach and ría gallegos, Santa Cruz, Argentina |
title |
Preliminary estimate of incidental mortality of commerson s dolphins (cephalorhynchus commersonii) in an artisanal setnet fishery in la Angelina beach and ría gallegos, Santa Cruz, Argentina |
spellingShingle |
Preliminary estimate of incidental mortality of commerson s dolphins (cephalorhynchus commersonii) in an artisanal setnet fishery in la Angelina beach and ría gallegos, Santa Cruz, Argentina Iñiguez, Miguel Angel Commerson´s dolphin Incidental catches Fisheries Catch per unit effort Patagonia Argentina |
title_short |
Preliminary estimate of incidental mortality of commerson s dolphins (cephalorhynchus commersonii) in an artisanal setnet fishery in la Angelina beach and ría gallegos, Santa Cruz, Argentina |
title_full |
Preliminary estimate of incidental mortality of commerson s dolphins (cephalorhynchus commersonii) in an artisanal setnet fishery in la Angelina beach and ría gallegos, Santa Cruz, Argentina |
title_fullStr |
Preliminary estimate of incidental mortality of commerson s dolphins (cephalorhynchus commersonii) in an artisanal setnet fishery in la Angelina beach and ría gallegos, Santa Cruz, Argentina |
title_full_unstemmed |
Preliminary estimate of incidental mortality of commerson s dolphins (cephalorhynchus commersonii) in an artisanal setnet fishery in la Angelina beach and ría gallegos, Santa Cruz, Argentina |
title_sort |
Preliminary estimate of incidental mortality of commerson s dolphins (cephalorhynchus commersonii) in an artisanal setnet fishery in la Angelina beach and ría gallegos, Santa Cruz, Argentina |
author |
Iñiguez, Miguel Angel |
author_facet |
Iñiguez, Miguel Angel Hevia, Marta Gasparrou, Cecilia Tomsin, Ana Secchi, Eduardo Resende |
author_role |
author |
author2 |
Hevia, Marta Gasparrou, Cecilia Tomsin, Ana Secchi, Eduardo Resende |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Iñiguez, Miguel Angel Hevia, Marta Gasparrou, Cecilia Tomsin, Ana Secchi, Eduardo Resende |
dc.subject.por.fl_str_mv |
Commerson´s dolphin Incidental catches Fisheries Catch per unit effort Patagonia Argentina |
topic |
Commerson´s dolphin Incidental catches Fisheries Catch per unit effort Patagonia Argentina |
description |
The Commerson’s dolphin, Cephalorhynchus commersonii, is perhaps the cetacean species most impacted by fisheries in the coastal waters of southern South America, south of 41ºS. Between January 1999 and February 2000, 66 Commerson´s dolphins were found dead on the coasts of La Angelina and Ría Gallegos3, and at least 37 of the ones at La Angelina beach (51º20’S, 069º02’W) were caught incidentally. These captures occurred in gill nets that were set in waters shallower than 15m and mainly for Patagonian blenny (Eleginops maclovinus), silversides (Odonthestes nigricans) and parona leatherjack (Parona signata). The season for set net fishing, extending from the end of August to mid February, overlaps with the breeding season (November- February) of Commerson’s dolphins, which is also when this species moves inshore. The estimated catch per unit of effort (CPUE) for gillnets in the area of La Angelina was 0.229 dolphins x (1,000m of net x set)-1. By extrapolation, the estimated total by-catch during the 1999/2000 fishing season in the region of La Angelina and Ría Gallegos was 179 dolphins (SD = 18.8; CI = 141 - 212). Although no abundance estimation of Commerson’s dolphins in this region is available, the estimated level of bycatch is concerning. Recommendations for action to mitigate and further document the impact of set gillnets are presented. |
publishDate |
2003 |
dc.date.issued.fl_str_mv |
2003 |
dc.date.accessioned.fl_str_mv |
2013-03-22T14:23:08Z |
dc.date.available.fl_str_mv |
2013-03-22T14:23:08Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
INIGUEZ, Miguel Angel et al. Preliminary estimate of incidental mortality of commerson s dolphins (cephalorhynchus commersonii) in an artisanal setnet fishery in la Angelina beach and ría gallegos, Santa Cruz, Argentina. Latin American Journal of Aquatic Mammals, v. 2, n. 2, p. 87-94, 2003. Disponível em: <http://www.marineconnection.org/docs/Commerson's%20bycatch%20in%20Argentina.pdf>. Acesso em: 20 fev. 2013. |
dc.identifier.uri.fl_str_mv |
http://repositorio.furg.br/handle/1/3187 |
dc.identifier.issn.none.fl_str_mv |
1676-7497 |
identifier_str_mv |
INIGUEZ, Miguel Angel et al. Preliminary estimate of incidental mortality of commerson s dolphins (cephalorhynchus commersonii) in an artisanal setnet fishery in la Angelina beach and ría gallegos, Santa Cruz, Argentina. Latin American Journal of Aquatic Mammals, v. 2, n. 2, p. 87-94, 2003. Disponível em: <http://www.marineconnection.org/docs/Commerson's%20bycatch%20in%20Argentina.pdf>. Acesso em: 20 fev. 2013. 1676-7497 |
url |
http://repositorio.furg.br/handle/1/3187 |
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eng |
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