Sobrevivência de peixes pelágicos capturados com espinhel no Oceano Atlântico Oeste Equatorial
Autor(a) principal: | |
---|---|
Data de Publicação: | 2011 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFRPE |
Texto Completo: | http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6270 |
Resumo: | Circle hooks (15/0 and 17/0) were compared with traditional hooks (type "J" 10/0) and used "hook timers (HT)” to identify the time capture and time in which the fish remained in line until haulback. Survival rates ranged considerably between species and species groups, and between the types of hooks and hooking location. As example, mortality rates showed billfishes significantly lower in circle hooks in compared to the traditional. The swordfish, in turn, reported higher mortality regardless the type of hook and hooking location, unlike the blue shark, which showed high levels of survival. By moreover, species of tunas and billfihes analyzed showed a significant trend toward reduction in mortality of individuals captured externally, resulting in an association between hooking location and the condition of the animal (χ2 = 13:54, p = 0.00023; χ2 = 27.35, p = 1.697e-07, respectively). For target species had a trend of increased survival with increased length of individual fish, although the group of sharks that trend was only observed for the blue shark, with a marginally significant difference, while other shark species showed a pattern otherwise, although the difference was statistically significant only for the crocodile shark. A total of 431 HT were activated and retrieved with fish on the line, represented by 20 species, of which 13 were captured more frequently at night. Some species demonstrated endure long periods of capture surviving until the time of haulback. Results suggest that knowledge of factors affecting survival of pelagic fish caught in fishing longline can develop/adopt fishing methods that reduce mortality primarily by members of the bycatch and animals caught incidentally. |
id |
URPE_3a8fc117e9c62e55056afcdfda83bc75 |
---|---|
oai_identifier_str |
oai:tede2:tede2/6270 |
network_acronym_str |
URPE |
network_name_str |
Biblioteca Digital de Teses e Dissertações da UFRPE |
repository_id_str |
|
spelling |
HAZIN, Fábio Hissa VieiraTRAVASSOS , Paulo Eurico Pires FerreiraANDRADE, Humber Agrelli deHAZIN, Humberto GomesOLIVEIRA, Paulo Guilherme Vasconcelos dehttp://lattes.cnpq.br/0407093177034625NUNES, Diogo Martins2017-02-09T15:04:24Z2011-02-11NUNES, Diogo Martins. Sobrevivência de peixes pelágicos capturados com espinhel no Oceano Atlântico Oeste Equatorial. 2011. 51 f. Dissertação (Programa de Pós-Graduação em Recursos Pesqueiros e Aquicultura) - Universidade Federal Rural de Pernambuco, Recife.http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6270Circle hooks (15/0 and 17/0) were compared with traditional hooks (type "J" 10/0) and used "hook timers (HT)” to identify the time capture and time in which the fish remained in line until haulback. Survival rates ranged considerably between species and species groups, and between the types of hooks and hooking location. As example, mortality rates showed billfishes significantly lower in circle hooks in compared to the traditional. The swordfish, in turn, reported higher mortality regardless the type of hook and hooking location, unlike the blue shark, which showed high levels of survival. By moreover, species of tunas and billfihes analyzed showed a significant trend toward reduction in mortality of individuals captured externally, resulting in an association between hooking location and the condition of the animal (χ2 = 13:54, p = 0.00023; χ2 = 27.35, p = 1.697e-07, respectively). For target species had a trend of increased survival with increased length of individual fish, although the group of sharks that trend was only observed for the blue shark, with a marginally significant difference, while other shark species showed a pattern otherwise, although the difference was statistically significant only for the crocodile shark. A total of 431 HT were activated and retrieved with fish on the line, represented by 20 species, of which 13 were captured more frequently at night. Some species demonstrated endure long periods of capture surviving until the time of haulback. Results suggest that knowledge of factors affecting survival of pelagic fish caught in fishing longline can develop/adopt fishing methods that reduce mortality primarily by members of the bycatch and animals caught incidentally.Durante os experimentos anzóis circulares (15/0 e 17/0) foram comparados com anzóis tipo “J” 10/0 e utilizados “hook timers” (HT) para identificação da hora de captura e do tempo em que o peixe permaneceu na linha até seu embarque. O espadarte apresentou altos índices de mortalidade, ao contrário do tubarão azul, que obteve altos índices de sobrevivência a despeito do tipo e local em que o anzol foi fisgado. Por outro lado, as espécies de albacoras e agulhões analisados apresentaram uma tendência significativa de redução da mortalidade em indivíduos capturados externamente, resultando em uma associação entre o local de fisga e a condição do animal (χ2=13.54 e p=0.00023; χ2=27.35 e p=1.697e-07, respectivamente). Houve uma tendência de elevação da sobrevivência com aumento do comprimento individual dos peixes, embora no grupo dos tubarões essa elevação apenas foi observada para o tubarão azul, com uma diferença marginalmente significativa, enquanto que outras espécies de tubarão apresentaram um padrão contrário, embora a diferença tenha sido estatisticamente significante apenas para o tubarão cachorro. Um total de 431 HT foram ativados, havendo um claro crescimento da taxa de mortalidade dos peixes capturados com o aumento do tempo decorrido entre a captura e o seu embarque, porém, algumas espécies demonstraram suportar longos períodos de captura sobrevivendo até o momento do embarque. Os resultados sugerem que através do conhecimento dos fatores que afetam a sobrevivência de peixes pelágicos capturados na pesca com espinhel pode-se desenvolver/adotar métodos de pesca que reduzam a mortalidade principalmente dos integrantes da fauna acompanhante e animais capturados incidentalmente.Submitted by (edna.saturno@ufrpe.br) on 2017-02-09T15:04:24Z No. of bitstreams: 1 Diogo Martins Nunes.pdf: 540969 bytes, checksum: 969307884f3ced0bc71b0426a1a8882d (MD5)Made available in DSpace on 2017-02-09T15:04:24Z (GMT). No. of bitstreams: 1 Diogo Martins Nunes.pdf: 540969 bytes, checksum: 969307884f3ced0bc71b0426a1a8882d (MD5) Previous issue date: 2011-02-11Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPqapplication/pdfporUniversidade Federal Rural de PernambucoPrograma de Pós-Graduação em Recursos Pesqueiros e AquiculturaUFRPEBrasilDepartamento de Pesca e AquiculturaAtumMortalidadeAnzol circularEspinhel pelágicoPeixe pelágicoMortalityPelagic longlineTunaCircle hookHook timersCIENCIAS AGRARIAS::RECURSOS PESQUEIROS E ENGENHARIA DE PESCASobrevivência de peixes pelágicos capturados com espinhel no Oceano Atlântico Oeste Equatorialinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis80217415640343225476006006006007231936942857037408-6131750198709519811-2555911436985713659info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFRPEinstname:Universidade Federal Rural de Pernambuco (UFRPE)instacron:UFRPELICENSElicense.txtlicense.txttext/plain; charset=utf-82165http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/6270/1/license.txtbd3efa91386c1718a7f26a329fdcb468MD51ORIGINALDiogo Martins Nunes.pdfDiogo Martins Nunes.pdfapplication/pdf540969http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/6270/2/Diogo+Martins+Nunes.pdf969307884f3ced0bc71b0426a1a8882dMD52tede2/62702017-02-09 12:04:24.934oai:tede2: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Biblioteca Digital de Teses e Dissertaçõeshttp://www.tede2.ufrpe.br:8080/tede/PUBhttp://www.tede2.ufrpe.br:8080/oai/requestbdtd@ufrpe.br ||bdtd@ufrpe.bropendoar:2024-05-28T12:34:07.862026Biblioteca Digital de Teses e Dissertações da UFRPE - Universidade Federal Rural de Pernambuco (UFRPE)false |
dc.title.por.fl_str_mv |
Sobrevivência de peixes pelágicos capturados com espinhel no Oceano Atlântico Oeste Equatorial |
title |
Sobrevivência de peixes pelágicos capturados com espinhel no Oceano Atlântico Oeste Equatorial |
spellingShingle |
Sobrevivência de peixes pelágicos capturados com espinhel no Oceano Atlântico Oeste Equatorial NUNES, Diogo Martins Atum Mortalidade Anzol circular Espinhel pelágico Peixe pelágico Mortality Pelagic longline Tuna Circle hook Hook timers CIENCIAS AGRARIAS::RECURSOS PESQUEIROS E ENGENHARIA DE PESCA |
title_short |
Sobrevivência de peixes pelágicos capturados com espinhel no Oceano Atlântico Oeste Equatorial |
title_full |
Sobrevivência de peixes pelágicos capturados com espinhel no Oceano Atlântico Oeste Equatorial |
title_fullStr |
Sobrevivência de peixes pelágicos capturados com espinhel no Oceano Atlântico Oeste Equatorial |
title_full_unstemmed |
Sobrevivência de peixes pelágicos capturados com espinhel no Oceano Atlântico Oeste Equatorial |
title_sort |
Sobrevivência de peixes pelágicos capturados com espinhel no Oceano Atlântico Oeste Equatorial |
author |
NUNES, Diogo Martins |
author_facet |
NUNES, Diogo Martins |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
HAZIN, Fábio Hissa Vieira |
dc.contributor.referee1.fl_str_mv |
TRAVASSOS , Paulo Eurico Pires Ferreira |
dc.contributor.referee2.fl_str_mv |
ANDRADE, Humber Agrelli de |
dc.contributor.referee3.fl_str_mv |
HAZIN, Humberto Gomes |
dc.contributor.referee4.fl_str_mv |
OLIVEIRA, Paulo Guilherme Vasconcelos de |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/0407093177034625 |
dc.contributor.author.fl_str_mv |
NUNES, Diogo Martins |
contributor_str_mv |
HAZIN, Fábio Hissa Vieira TRAVASSOS , Paulo Eurico Pires Ferreira ANDRADE, Humber Agrelli de HAZIN, Humberto Gomes OLIVEIRA, Paulo Guilherme Vasconcelos de |
dc.subject.por.fl_str_mv |
Atum Mortalidade Anzol circular Espinhel pelágico Peixe pelágico |
topic |
Atum Mortalidade Anzol circular Espinhel pelágico Peixe pelágico Mortality Pelagic longline Tuna Circle hook Hook timers CIENCIAS AGRARIAS::RECURSOS PESQUEIROS E ENGENHARIA DE PESCA |
dc.subject.eng.fl_str_mv |
Mortality Pelagic longline Tuna Circle hook Hook timers |
dc.subject.cnpq.fl_str_mv |
CIENCIAS AGRARIAS::RECURSOS PESQUEIROS E ENGENHARIA DE PESCA |
description |
Circle hooks (15/0 and 17/0) were compared with traditional hooks (type "J" 10/0) and used "hook timers (HT)” to identify the time capture and time in which the fish remained in line until haulback. Survival rates ranged considerably between species and species groups, and between the types of hooks and hooking location. As example, mortality rates showed billfishes significantly lower in circle hooks in compared to the traditional. The swordfish, in turn, reported higher mortality regardless the type of hook and hooking location, unlike the blue shark, which showed high levels of survival. By moreover, species of tunas and billfihes analyzed showed a significant trend toward reduction in mortality of individuals captured externally, resulting in an association between hooking location and the condition of the animal (χ2 = 13:54, p = 0.00023; χ2 = 27.35, p = 1.697e-07, respectively). For target species had a trend of increased survival with increased length of individual fish, although the group of sharks that trend was only observed for the blue shark, with a marginally significant difference, while other shark species showed a pattern otherwise, although the difference was statistically significant only for the crocodile shark. A total of 431 HT were activated and retrieved with fish on the line, represented by 20 species, of which 13 were captured more frequently at night. Some species demonstrated endure long periods of capture surviving until the time of haulback. Results suggest that knowledge of factors affecting survival of pelagic fish caught in fishing longline can develop/adopt fishing methods that reduce mortality primarily by members of the bycatch and animals caught incidentally. |
publishDate |
2011 |
dc.date.issued.fl_str_mv |
2011-02-11 |
dc.date.accessioned.fl_str_mv |
2017-02-09T15:04:24Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
NUNES, Diogo Martins. Sobrevivência de peixes pelágicos capturados com espinhel no Oceano Atlântico Oeste Equatorial. 2011. 51 f. Dissertação (Programa de Pós-Graduação em Recursos Pesqueiros e Aquicultura) - Universidade Federal Rural de Pernambuco, Recife. |
dc.identifier.uri.fl_str_mv |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6270 |
identifier_str_mv |
NUNES, Diogo Martins. Sobrevivência de peixes pelágicos capturados com espinhel no Oceano Atlântico Oeste Equatorial. 2011. 51 f. Dissertação (Programa de Pós-Graduação em Recursos Pesqueiros e Aquicultura) - Universidade Federal Rural de Pernambuco, Recife. |
url |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6270 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.program.fl_str_mv |
8021741564034322547 |
dc.relation.confidence.fl_str_mv |
600 600 600 600 |
dc.relation.department.fl_str_mv |
7231936942857037408 |
dc.relation.cnpq.fl_str_mv |
-6131750198709519811 |
dc.relation.sponsorship.fl_str_mv |
-2555911436985713659 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural de Pernambuco |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Recursos Pesqueiros e Aquicultura |
dc.publisher.initials.fl_str_mv |
UFRPE |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Departamento de Pesca e Aquicultura |
publisher.none.fl_str_mv |
Universidade Federal Rural de Pernambuco |
dc.source.none.fl_str_mv |
reponame:Biblioteca Digital de Teses e Dissertações da UFRPE instname:Universidade Federal Rural de Pernambuco (UFRPE) instacron:UFRPE |
instname_str |
Universidade Federal Rural de Pernambuco (UFRPE) |
instacron_str |
UFRPE |
institution |
UFRPE |
reponame_str |
Biblioteca Digital de Teses e Dissertações da UFRPE |
collection |
Biblioteca Digital de Teses e Dissertações da UFRPE |
bitstream.url.fl_str_mv |
http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/6270/1/license.txt http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/6270/2/Diogo+Martins+Nunes.pdf |
bitstream.checksum.fl_str_mv |
bd3efa91386c1718a7f26a329fdcb468 969307884f3ced0bc71b0426a1a8882d |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 |
repository.name.fl_str_mv |
Biblioteca Digital de Teses e Dissertações da UFRPE - Universidade Federal Rural de Pernambuco (UFRPE) |
repository.mail.fl_str_mv |
bdtd@ufrpe.br ||bdtd@ufrpe.br |
_version_ |
1810102235419377664 |