Incidental catch of dolphinfish (Coryphaena spp.) reported by the Mexican tuna purse seiners in the eastern Pacific Ocean

In the eastern Pacific Ocean (EPO), dolphinfish (Coryphaena spp.) are caught incidentally by the tunapurse-seine fishery; therefore, the records of this fishery are a good source of information to analyzethe distribution of dolphinfish. To determine the spatiotemporal distribution of dolphinfish and...

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Autores: Martínez Rincón, Raul Octavio, Ortega García, Sofía, Vaca Rodríguez, Juan Guillermo
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2009
País:México
Institución:Instituto Politécnico Nacional
Repositorio:Repositorio Digital del IPN
OAI Identifier:oai:www.repositoriodigital.ipn.mx:123456789/13241
Acceso en línea:http://www.repositoriodigital.ipn.mx/handle/123456789/13241
Access Level:acceso abierto
Palabra clave:Tuna purse-seine, Incidental catch Floating objects, Dolphinfish (Coryphaena spp.), set types
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spelling Incidental catch of dolphinfish (Coryphaena spp.) reported by the Mexican tuna purse seiners in the eastern Pacific OceanMartínez Rincón, Raul OctavioOrtega García, SofíaVaca Rodríguez, Juan GuillermoTuna purse-seine, Incidental catch Floating objects, Dolphinfish (Coryphaena spp.), set typesIn the eastern Pacific Ocean (EPO), dolphinfish (Coryphaena spp.) are caught incidentally by the tunapurse-seine fishery; therefore, the records of this fishery are a good source of information to analyzethe distribution of dolphinfish. To determine the spatiotemporal distribution of dolphinfish and catchvariability in the three types of tuna-fishing sets (on schools associated with dolphins or with floatingobjects, or on unassociated schools), statistical analyses were made of the 1998–2005 records takenby scientific observers on board tuna-fishing vessels. The incidental catch did not show a well-definedannual or seasonal distribution pattern. Two high catch areas were observed, the first located in Mexicanoffshore waters (15–25◦N), with 15% of the total catch, and the second located in offshore watersof the central EPO (0–10◦N), with almost 60% of the total catch. The incidental catch was significantlydifferent among years and seasons (H7,780 = 54.6, p < 0.05 for years, and H3,780 = 42.7, p < 0.05 for seasons),the greatest catch being recorded during 1999 and the first two quarters, respectively. Sets on floatingobjects recorded most of the incidental catch of dolphinfish, followed by unassociated sets, whiledolphin-associated sets recorded the lowest catch. Almost 80% of the total catch was fished in waterswith sea-surface temperatures between 25 ◦C and 28 ◦C. The mean size of dolphinfish was significantlydifferent (H2,777 = 12.8, p < 0.05) by set type, but the smallest specimens caughtwere associated with floatingobjects. Among sets associated with floating objects, the incidental catch of dolphinfish was greatestin sets on logs, branches, etc. (PALO sets), though those on FADs (fish-aggregating devices)were the mostnumerous in the central EPO.Instituto Politécnico Nacional (IPN). Centro Interdisciplinario de Ciencias MarinasCiencias marinasPDFFisheries Research2013-02-19T16:36:55Z2013-02-19T16:36:55Z2009info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article0165-7836http://www.repositoriodigital.ipn.mx/handle/123456789/13241reponame:Repositorio Digital del IPNinstname:Instituto Politécnico Nacionalinstacron:IPNeninfo:eu-repo/semantics/openAccessoai:www.repositoriodigital.ipn.mx:123456789/132412026-02-18T16:42:39Z
dc.title.none.fl_str_mv Incidental catch of dolphinfish (Coryphaena spp.) reported by the Mexican tuna purse seiners in the eastern Pacific Ocean
title Incidental catch of dolphinfish (Coryphaena spp.) reported by the Mexican tuna purse seiners in the eastern Pacific Ocean
spellingShingle Incidental catch of dolphinfish (Coryphaena spp.) reported by the Mexican tuna purse seiners in the eastern Pacific Ocean
Martínez Rincón, Raul Octavio
Tuna purse-seine, Incidental catch Floating objects, Dolphinfish (Coryphaena spp.), set types
title_short Incidental catch of dolphinfish (Coryphaena spp.) reported by the Mexican tuna purse seiners in the eastern Pacific Ocean
title_full Incidental catch of dolphinfish (Coryphaena spp.) reported by the Mexican tuna purse seiners in the eastern Pacific Ocean
title_fullStr Incidental catch of dolphinfish (Coryphaena spp.) reported by the Mexican tuna purse seiners in the eastern Pacific Ocean
title_full_unstemmed Incidental catch of dolphinfish (Coryphaena spp.) reported by the Mexican tuna purse seiners in the eastern Pacific Ocean
title_sort Incidental catch of dolphinfish (Coryphaena spp.) reported by the Mexican tuna purse seiners in the eastern Pacific Ocean
dc.creator.none.fl_str_mv Martínez Rincón, Raul Octavio
Ortega García, Sofía
Vaca Rodríguez, Juan Guillermo
author Martínez Rincón, Raul Octavio
author_facet Martínez Rincón, Raul Octavio
Ortega García, Sofía
Vaca Rodríguez, Juan Guillermo
author_role author
author2 Ortega García, Sofía
Vaca Rodríguez, Juan Guillermo
author2_role author
author
dc.subject.none.fl_str_mv Tuna purse-seine, Incidental catch Floating objects, Dolphinfish (Coryphaena spp.), set types
topic Tuna purse-seine, Incidental catch Floating objects, Dolphinfish (Coryphaena spp.), set types
description In the eastern Pacific Ocean (EPO), dolphinfish (Coryphaena spp.) are caught incidentally by the tunapurse-seine fishery; therefore, the records of this fishery are a good source of information to analyzethe distribution of dolphinfish. To determine the spatiotemporal distribution of dolphinfish and catchvariability in the three types of tuna-fishing sets (on schools associated with dolphins or with floatingobjects, or on unassociated schools), statistical analyses were made of the 1998–2005 records takenby scientific observers on board tuna-fishing vessels. The incidental catch did not show a well-definedannual or seasonal distribution pattern. Two high catch areas were observed, the first located in Mexicanoffshore waters (15–25◦N), with 15% of the total catch, and the second located in offshore watersof the central EPO (0–10◦N), with almost 60% of the total catch. The incidental catch was significantlydifferent among years and seasons (H7,780 = 54.6, p < 0.05 for years, and H3,780 = 42.7, p < 0.05 for seasons),the greatest catch being recorded during 1999 and the first two quarters, respectively. Sets on floatingobjects recorded most of the incidental catch of dolphinfish, followed by unassociated sets, whiledolphin-associated sets recorded the lowest catch. Almost 80% of the total catch was fished in waterswith sea-surface temperatures between 25 ◦C and 28 ◦C. The mean size of dolphinfish was significantlydifferent (H2,777 = 12.8, p < 0.05) by set type, but the smallest specimens caughtwere associated with floatingobjects. Among sets associated with floating objects, the incidental catch of dolphinfish was greatestin sets on logs, branches, etc. (PALO sets), though those on FADs (fish-aggregating devices)were the mostnumerous in the central EPO.
publishDate 2009
dc.date.none.fl_str_mv 2009
2013-02-19T16:36:55Z
2013-02-19T16:36:55Z
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv 0165-7836
http://www.repositoriodigital.ipn.mx/handle/123456789/13241
identifier_str_mv 0165-7836
url http://www.repositoriodigital.ipn.mx/handle/123456789/13241
dc.language.none.fl_str_mv en
language_invalid_str_mv en
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Fisheries Research
publisher.none.fl_str_mv Fisheries Research
dc.source.none.fl_str_mv reponame:Repositorio Digital del IPN
instname:Instituto Politécnico Nacional
instacron:IPN
instname_str Instituto Politécnico Nacional
instacron_str IPN
institution IPN
reponame_str Repositorio Digital del IPN
collection Repositorio Digital del IPN
repository.name.fl_str_mv
repository.mail.fl_str_mv
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