Determinação da origem e conectividade da população da albacora laje, Thunnus albacares (Bonnaterre, 1788) no atlântico equatorial

Detalhes bibliográficos
Autor(a) principal: ROQUE, Pollyana Christine Gomes
Data de Publicação: 2015
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/tede2/7102
Resumo: The yellowfin tuna, Thunnus albacares (Bonnaterre, 1788), is a pelagic species of the Scombridae family that is distributed throughout the tropical and subtropical waters of the three oceans. Characterized by the yellow coloration of its fins and finlets, it is usually found close to the surface, in waters with high productivity and warm temperatures, being mainly targeted by pelagic longliners and purse seiners. The yellowfin tuna displays a marked migratory behavior, which hinders the understanding of their movements between spawning, nursery and feeding areas. In order to ensure the conservation of exploited populations, it is fundamental to determine the size distribution and length at age of the individuals caught. The use of trace elements in the analysis of the stock structure can assist in reconstructing the life history, origin and connectivity of various species. In the present study, in order to assess the degree of connectivity between the specimens caught in the eastern and western sides of the West and Central Equatorial Atlantic, the otoliths of 20 specimens with fork lengths (FL) ranging between 37 cm and 57 cm were analyzed. For this purpose, an ablation laser system coupled to a mass spectrometer through plasma induction (LA ICPMS) was used to measure the concentration of various trace elements: 7Li, 24Mg , 55Mn, 88Sr, 137Ba, 44Ca- from an average of five ablation points to the core of each randomly chosen otolith. A Multivariate Analysis of Variance (MANOVA) and a Quadratic Discriminant Function Analysis (QDFA), along with univariate tests, were performed with the SYSTAT 13 software. The catch sites, which included the Saint Peter and Saint Paul Archipelago- SPSPA (10), the Gulf of Guinea (5) and Cape Verde (5), were discriminated with high accuracy, with a rate of 85% being correctly classified. The spatial comparison of trace elements suggests a significant variation between regions (p ≤ 0.05), with canonical scores equal to 0.172 in Brazil and 0.758 for Africa. The Wilk's Lambda test (0.386) was significant indicating that the concentration of the elements differed between the two regions showing that the individuals examined must have originated from chemically and/ or geographically distinct areas.
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spelling HAZIN, Fábio Hissa VieiraPINHEIRO, Patrícia BarrosTRAVASSOS, Paulo Eurico Pires FerreiraOLIVEIRA, Paulo Guilherme Vasconcelos dehttp://lattes.cnpq.br/3026818475189354ROQUE, Pollyana Christine Gomes2017-11-06T13:42:40Z2015-05-15ROQUE, Pollyana Christine Gomes. Determinação da origem e conectividade da população da albacora laje, Thunnus albacares (Bonnaterre, 1788) no atlântico equatorial. 2015. 62 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/tede2/7102The yellowfin tuna, Thunnus albacares (Bonnaterre, 1788), is a pelagic species of the Scombridae family that is distributed throughout the tropical and subtropical waters of the three oceans. Characterized by the yellow coloration of its fins and finlets, it is usually found close to the surface, in waters with high productivity and warm temperatures, being mainly targeted by pelagic longliners and purse seiners. The yellowfin tuna displays a marked migratory behavior, which hinders the understanding of their movements between spawning, nursery and feeding areas. In order to ensure the conservation of exploited populations, it is fundamental to determine the size distribution and length at age of the individuals caught. The use of trace elements in the analysis of the stock structure can assist in reconstructing the life history, origin and connectivity of various species. In the present study, in order to assess the degree of connectivity between the specimens caught in the eastern and western sides of the West and Central Equatorial Atlantic, the otoliths of 20 specimens with fork lengths (FL) ranging between 37 cm and 57 cm were analyzed. For this purpose, an ablation laser system coupled to a mass spectrometer through plasma induction (LA ICPMS) was used to measure the concentration of various trace elements: 7Li, 24Mg , 55Mn, 88Sr, 137Ba, 44Ca- from an average of five ablation points to the core of each randomly chosen otolith. A Multivariate Analysis of Variance (MANOVA) and a Quadratic Discriminant Function Analysis (QDFA), along with univariate tests, were performed with the SYSTAT 13 software. The catch sites, which included the Saint Peter and Saint Paul Archipelago- SPSPA (10), the Gulf of Guinea (5) and Cape Verde (5), were discriminated with high accuracy, with a rate of 85% being correctly classified. The spatial comparison of trace elements suggests a significant variation between regions (p ≤ 0.05), with canonical scores equal to 0.172 in Brazil and 0.758 for Africa. The Wilk's Lambda test (0.386) was significant indicating that the concentration of the elements differed between the two regions showing that the individuals examined must have originated from chemically and/ or geographically distinct areas.A albacora laje Thunnus albacares (BONNATERRE, 1788) é uma espécie pelágica da família Scombridae que se distribui em águas tropicais e subtropicais dos três oceanos. Caracterizada pela coloração amarelada de suas nadadeiras e pínulas, é normalmente encontrada na camada superficial, em águas com alta produtividade e elevada temperatura. Um dos principais alvos da frota pesqueira de espinhel pelágico e de rede de cerco, a espécie apresenta um comportamento altamente migratório o que dificulta a compreensão de seus movimentos entre áreas de desova, berçário e alimentação. Um aspecto fundamental para a conservação de populações explotadas pela pesca, contudo, é a determinação da distribuição de tamanhos e a variação dos comprimentos individuais em função da idade. A utilização de elementos traço na análise de estrutura dos estoques explotados pode auxiliar na reconstrução da história de vida, origem e conectividade de diversas espécies. No presente trabalho, foram analisados os otólitos de 20 indivíduos, com comprimento zoológico (CZ) variando entre 37 cm e 57 cm, para se avaliar o grau de conectividade entre os exemplares capturados no Atlântico Equatorial Oeste e Central. Para este fim, um sistema de ablação a laser ligado a um espectrômetro de massa por indução de plasma (LA ICPMS) foi utilizado para se medir à concentração dos elementos traços: 7Li, 24Mg, 55Mn, 88Sr, 137Ba, e 44Ca, a partir de uma média de cinco pontos de ablação para o núcleo de cada otólito escolhido aleatoriamente. Uma Análise Multivariada de Variância (MANOVA) e uma Análise Discriminante da Função Quadrática (QDFA), além de testes de univariância, foram efetuadas para determinar os locais de captura, que incluíram o Arquipélago de São Pedro e São Paulo- ASPSP (10), o Golfo da Guiné (5) e Cabo Verde (5). A acurácia da classificação foi de 85% e a comparação espacial dos elementos traços sugeriu uma variação significante entre as regiões (p ≤ 0,05), com escores canônicos iguais a 0,172 para região do Brasil e de 0,758 para a da África. O teste Wilk’s Lambda (0,386) foi significativo indicando que a concentração dos elementos difere entre as duas regiões evidenciando que os indivíduos analisados devem ter se originado de áreas quimicamente e/ ou geograficamente distintas.Submitted by Mario BC (mario@bc.ufrpe.br) on 2017-11-06T13:42:40Z No. of bitstreams: 1 Pollyana Christine Gomes Roque.pdf: 583107 bytes, checksum: e0225cd4330d9aa9481ff4809d92f859 (MD5)Made available in DSpace on 2017-11-06T13:42:40Z (GMT). No. of bitstreams: 1 Pollyana Christine Gomes Roque.pdf: 583107 bytes, checksum: e0225cd4330d9aa9481ff4809d92f859 (MD5) Previous issue date: 2015-05-15Conselho 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 AquiculturaAlbacoraAlbacora lajeThunnus albacaresOrigemConectividadeCIENCIAS AGRARIAS::RECURSOS PESQUEIROS E ENGENHARIA DE PESCADeterminação da origem e conectividade da população da albacora laje, Thunnus albacares (Bonnaterre, 1788) no atlântico 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:UFRPEORIGINALPollyana Christine Gomes Roque.pdfPollyana Christine Gomes Roque.pdfapplication/pdf583107http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/7102/2/Pollyana+Christine+Gomes+Roque.pdfe0225cd4330d9aa9481ff4809d92f859MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-82165http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/7102/1/license.txtbd3efa91386c1718a7f26a329fdcb468MD51tede2/71022017-11-06 10:42:40.703oai: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:2024-05-28T12:35:12.799569Biblioteca Digital de Teses e Dissertações da UFRPE - Universidade Federal Rural de Pernambuco (UFRPE)false
dc.title.por.fl_str_mv Determinação da origem e conectividade da população da albacora laje, Thunnus albacares (Bonnaterre, 1788) no atlântico equatorial
title Determinação da origem e conectividade da população da albacora laje, Thunnus albacares (Bonnaterre, 1788) no atlântico equatorial
spellingShingle Determinação da origem e conectividade da população da albacora laje, Thunnus albacares (Bonnaterre, 1788) no atlântico equatorial
ROQUE, Pollyana Christine Gomes
Albacora
Albacora laje
Thunnus albacares
Origem
Conectividade
CIENCIAS AGRARIAS::RECURSOS PESQUEIROS E ENGENHARIA DE PESCA
title_short Determinação da origem e conectividade da população da albacora laje, Thunnus albacares (Bonnaterre, 1788) no atlântico equatorial
title_full Determinação da origem e conectividade da população da albacora laje, Thunnus albacares (Bonnaterre, 1788) no atlântico equatorial
title_fullStr Determinação da origem e conectividade da população da albacora laje, Thunnus albacares (Bonnaterre, 1788) no atlântico equatorial
title_full_unstemmed Determinação da origem e conectividade da população da albacora laje, Thunnus albacares (Bonnaterre, 1788) no atlântico equatorial
title_sort Determinação da origem e conectividade da população da albacora laje, Thunnus albacares (Bonnaterre, 1788) no atlântico equatorial
author ROQUE, Pollyana Christine Gomes
author_facet ROQUE, Pollyana Christine Gomes
author_role author
dc.contributor.advisor1.fl_str_mv HAZIN, Fábio Hissa Vieira
dc.contributor.referee1.fl_str_mv PINHEIRO, Patrícia Barros
dc.contributor.referee2.fl_str_mv TRAVASSOS, Paulo Eurico Pires Ferreira
dc.contributor.referee3.fl_str_mv OLIVEIRA, Paulo Guilherme Vasconcelos de
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/3026818475189354
dc.contributor.author.fl_str_mv ROQUE, Pollyana Christine Gomes
contributor_str_mv HAZIN, Fábio Hissa Vieira
PINHEIRO, Patrícia Barros
TRAVASSOS, Paulo Eurico Pires Ferreira
OLIVEIRA, Paulo Guilherme Vasconcelos de
dc.subject.por.fl_str_mv Albacora
Albacora laje
Thunnus albacares
Origem
Conectividade
topic Albacora
Albacora laje
Thunnus albacares
Origem
Conectividade
CIENCIAS AGRARIAS::RECURSOS PESQUEIROS E ENGENHARIA DE PESCA
dc.subject.cnpq.fl_str_mv CIENCIAS AGRARIAS::RECURSOS PESQUEIROS E ENGENHARIA DE PESCA
description The yellowfin tuna, Thunnus albacares (Bonnaterre, 1788), is a pelagic species of the Scombridae family that is distributed throughout the tropical and subtropical waters of the three oceans. Characterized by the yellow coloration of its fins and finlets, it is usually found close to the surface, in waters with high productivity and warm temperatures, being mainly targeted by pelagic longliners and purse seiners. The yellowfin tuna displays a marked migratory behavior, which hinders the understanding of their movements between spawning, nursery and feeding areas. In order to ensure the conservation of exploited populations, it is fundamental to determine the size distribution and length at age of the individuals caught. The use of trace elements in the analysis of the stock structure can assist in reconstructing the life history, origin and connectivity of various species. In the present study, in order to assess the degree of connectivity between the specimens caught in the eastern and western sides of the West and Central Equatorial Atlantic, the otoliths of 20 specimens with fork lengths (FL) ranging between 37 cm and 57 cm were analyzed. For this purpose, an ablation laser system coupled to a mass spectrometer through plasma induction (LA ICPMS) was used to measure the concentration of various trace elements: 7Li, 24Mg , 55Mn, 88Sr, 137Ba, 44Ca- from an average of five ablation points to the core of each randomly chosen otolith. A Multivariate Analysis of Variance (MANOVA) and a Quadratic Discriminant Function Analysis (QDFA), along with univariate tests, were performed with the SYSTAT 13 software. The catch sites, which included the Saint Peter and Saint Paul Archipelago- SPSPA (10), the Gulf of Guinea (5) and Cape Verde (5), were discriminated with high accuracy, with a rate of 85% being correctly classified. The spatial comparison of trace elements suggests a significant variation between regions (p ≤ 0.05), with canonical scores equal to 0.172 in Brazil and 0.758 for Africa. The Wilk's Lambda test (0.386) was significant indicating that the concentration of the elements differed between the two regions showing that the individuals examined must have originated from chemically and/ or geographically distinct areas.
publishDate 2015
dc.date.issued.fl_str_mv 2015-05-15
dc.date.accessioned.fl_str_mv 2017-11-06T13:42:40Z
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 ROQUE, Pollyana Christine Gomes. Determinação da origem e conectividade da população da albacora laje, Thunnus albacares (Bonnaterre, 1788) no atlântico equatorial. 2015. 62 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/tede2/7102
identifier_str_mv ROQUE, Pollyana Christine Gomes. Determinação da origem e conectividade da população da albacora laje, Thunnus albacares (Bonnaterre, 1788) no atlântico equatorial. 2015. 62 f. Dissertação (Programa de Pós-Graduação em Recursos Pesqueiros e Aquicultura) - Universidade Federal Rural de Pernambuco, Recife.
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dc.publisher.country.fl_str_mv Brasil
dc.publisher.department.fl_str_mv Departamento de Pesca e Aquicultura
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