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dc.creatorClarke, Tayler McLellan
dc.creatorEspinoza Mendiola, Mario
dc.creatorAhrens, Robert N. M.
dc.creatorWehrtmann, Ingo S.
dc.date.accessioned2017-09-04T13:53:43Z
dc.date.available2017-09-04T13:53:43Z
dc.date.issued2015
dc.identifier.citationhttp://fishbull.noaa.gov/1141/1141toc.htmes_ES
dc.identifier.issn0090-0656
dc.identifier.urihttp://hdl.handle.net/10669/73120
dc.description.abstractDemersal sharks and rays are common yet vulnerable components of the bycatch in tropical bottom-trawl fisheries. Little is known about the elasmobranch assemblages associated with most of these fisheries, particularly within the eastern tropical Pacific. This study characterized the elasmobranch assemblage associated with the shrimp trawl fishery along the Pacific coast of Costa Rica. Between August 2008 and August 2012, 346 trawl hauls were conducted at depths of 18–350 m. These hauls resulted in a sample of 4564 elasmobranchs from 25 species and 13 families. The Panamic stingray (Urotrygon aspidura), rasptail skate (Raja velezi), brown smoothhound (Mustelus henlei), and witch guitarfish (Zapteryx xyster) accounted for more than 66% of the elasmobranch abundance within the bycatch. Depth was the main factor influencing the elasmobranch assemblage; species richness was significantly higher at depths <100 m than at other depths. Two groups of elasmobranchs were identified: the first was found in shallow waters (<50 m), and the second was observed at depths of 50–350 m. Sex and size segregation patterns are also influenced by depth. Moreover, we documented the shift of the bottomtrawl fishery toward shallow-water resources—a change that could be problematic considering that elasmobranch diversity is higher in shallow waterses_ES
dc.description.sponsorshipUniversidad de Costa Rica/[808-B0-536]/UCR/Costa Ricaes_ES
dc.description.sponsorshipUniversidad de Costa Rica/[111-A4-508]/UCR/Costa Ricaes_ES
dc.language.isoen_USes_ES
dc.sourceFishery Bulletin; Volumen 114, Número 1. 2015es_ES
dc.subjectShrimpes_ES
dc.subjectCosta Ricaes_ES
dc.subjectPacific coastes_ES
dc.subjectDemersales_ES
dc.titleElasmobranch bycatch associated with the shrimp trawl fishery off the Pacific coast of Costa Rica, Central Americaes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.typeArtículo científicoes_ES
dc.identifier.doi10.7755/FB.114.1
dc.description.procedenceUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigación en Ciencias del Mar y Limnología (CIMAR)es_ES
dc.description.procedenceUCR::Vicerrectoría de Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de Biologíaes_ES


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