THE IMPACT OF SHRIMP TRAWL BYCATCH ON FISH REPRODUCTION IN NORTHEASTERN BRAZIL
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Biota Amazônia |
Texto Completo: | https://periodicos.unifap.br/index.php/biota/article/view/4317 |
Resumo: | In the west coast of Rio Grande do Norte many small-scale fisheries targeting mostly shrimp but accidentally catch a large number of fish. Our aim was to evaluate the Ichthyofauna composition and distribution in Potiguar Basin, northeastern Brazil, in order to elucidate the impact of bycatch on fish reproduction. The study area was divided into four stretches (A, B, C and D), and we sampled 1,426 specimens classified into 10 orders, 23 families and 49 species. We obtained biometric data and gonadal tissue in order to determine the reproductive aspects of the studied fish. Stretch A had the highest values of evenness and dominance; the highest values of abundance, biomass, richness and diversity were found in stretches B, C and D. Analysis based on faunal similarity revealed three groups: I (found in stretches B and D), II (C), and III (A). In regards to reproductive phase, 76.3% of the specimens were classified as 'immatureâ, 16.7% as âmaturingâ and 7% as âmatureâ. Through the anatomical and histological analyzes of the gonads and the size of first maturation, we verified that the species Pomadasys corvinaeformes, Menticirrhus littoralis and Larimus breviceps were negatively related to fishing activity; on the other hand, Pellona harroweri was positively related. Our findings indicate that the incidental capture of some non-target species can affects predominantly individuals considered immature, i.e. without reproductive potencial, an indicative of non-sustainable fishing in region.Keywords: coastal zone; diversity; ichthyofauna; reproductive stages; sexual maturity. |
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Biota Amazônia |
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THE IMPACT OF SHRIMP TRAWL BYCATCH ON FISH REPRODUCTION IN NORTHEASTERN BRAZILO IMPACTO DA PESCA ACESSÓRIA DO ARRASTO CAMAROEIRO NA REPRODUÇÃO DE PEIXES NO NORDESTE DO BRASILcoastal zone; diversity; ichthyofauna; reproductive stages; sexual maturity.In the west coast of Rio Grande do Norte many small-scale fisheries targeting mostly shrimp but accidentally catch a large number of fish. Our aim was to evaluate the Ichthyofauna composition and distribution in Potiguar Basin, northeastern Brazil, in order to elucidate the impact of bycatch on fish reproduction. The study area was divided into four stretches (A, B, C and D), and we sampled 1,426 specimens classified into 10 orders, 23 families and 49 species. We obtained biometric data and gonadal tissue in order to determine the reproductive aspects of the studied fish. Stretch A had the highest values of evenness and dominance; the highest values of abundance, biomass, richness and diversity were found in stretches B, C and D. Analysis based on faunal similarity revealed three groups: I (found in stretches B and D), II (C), and III (A). In regards to reproductive phase, 76.3% of the specimens were classified as 'immatureâ, 16.7% as âmaturingâ and 7% as âmatureâ. Through the anatomical and histological analyzes of the gonads and the size of first maturation, we verified that the species Pomadasys corvinaeformes, Menticirrhus littoralis and Larimus breviceps were negatively related to fishing activity; on the other hand, Pellona harroweri was positively related. Our findings indicate that the incidental capture of some non-target species can affects predominantly individuals considered immature, i.e. without reproductive potencial, an indicative of non-sustainable fishing in region.Keywords: coastal zone; diversity; ichthyofauna; reproductive stages; sexual maturity.Na costa oeste do Rio Grande do Norte, muitas pescarias de pequena escala têm como alvo principal camarões, mas acidentalmente capturam um grande número de peixes. Nosso objetivo foi avaliar a composição e distribuição da ictiofauna na Bacia Potiguar, Nordeste do Brasil, a fim de elucidar o impacto das capturas acessórias na reprodução dos peixes. A área de estudo foi dividida em quatro trechos (A, B, C e D), e foram amostrados 1.426 espécimes classificados em 10 ordens, 23 famílias e 49 espécies. Obtivemos dados biométricos e tecido gonadal para determinar os aspectos reprodutivos dos peixes estudados. O Trecho A apresentou os maiores valores de equitabilidade e dominância; os maiores valores de abundância, biomassa, riqueza e diversidade foram encontrados nos trechos B, C e D. A análise baseada na similaridade faunística revelou três grupos: I (trechos B e D), II (C) e III (A). Em relação à fase reprodutiva, 76,3% dos espécimes foram classificados como “imaturos”, 16,7% como “em maturação” e 7% como “maduros”. Através das análises anatômicas e histológicas das gônadas e do tamanho da primeira maturação, verificamos que as espécies Pomadasys corvinaeformes, Menticirrhus littoralis e Larimus breviceps foram negativamente relacionadas à atividade pesqueira; Por outro lado, Pellona harroweri estava positivamente relacionada. Nossos achados indicam que a captura incidental de algumas espécies não-alvo pode afetar predominantemente indivíduos considerados imaturos, ou seja, sem potencial reprodutivo, um indicativo de pesca não sustentável na região.Palavras-chave: diversidade, estágios reprodutivos, ictiofauna, maturidade sexual, zona costeira.Universidade Federal do AmapáPrograma de Monitoramento de Praias da Bacia Potiguar (PMP-BP)Projeto Cetáceos da Costa Branca, Universidade do Estado do Rio Grande do Norte (UERN)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES).Bomfim, Aline da CostaFarias, Daniel Solon DiasMorais, Iara CecÃlia da CostaRossi, SilmaraGavilan, Simone AlmeidaSilva, Flávio José de Lima2019-03-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArtigo Avaliado pelos Paresapplication/pdfhttps://periodicos.unifap.br/index.php/biota/article/view/431710.18561/2179-5746/biotaamazonia.v9n1p37-42Biota Amazônia (Biote Amazonie, Biota Amazonia, Amazonian Biota); v. 9, n. 1 (2019); 37-422179-5746reponame:Biota Amazôniainstname:Universidade Federal do Amapá (UNIFAP)instacron:UNIFAPenghttps://periodicos.unifap.br/index.php/biota/article/view/4317/v9n1p37-42.pdfhttps://periodicos.unifap.br/index.php/biota/article/downloadSuppFile/4317/675https://periodicos.unifap.br/index.php/biota/article/downloadSuppFile/4317/682https://periodicos.unifap.br/index.php/biota/article/downloadSuppFile/4317/683https://periodicos.unifap.br/index.php/biota/article/downloadSuppFile/4317/684https://periodicos.unifap.br/index.php/biota/article/downloadSuppFile/4317/685https://periodicos.unifap.br/index.php/biota/article/downloadSuppFile/4317/686https://periodicos.unifap.br/index.php/biota/article/downloadSuppFile/4317/687Direitos autorais 2019 Biota Amazônia (Biote Amazonie, Biota Amazonia, Amazonian Biota)http://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccess2019-05-28T18:48:43Zoai:ojs.pkp.sfu.ca:article/4317Revistahttp://periodicos.unifap.br/index.php/biotaONGhttps://periodicos.unifap.br/index.php/biota/oai||juliosa@unifap.br2179-57462179-5746opendoar:2019-05-28T18:48:43Biota Amazônia - Universidade Federal do Amapá (UNIFAP)false |
dc.title.none.fl_str_mv |
THE IMPACT OF SHRIMP TRAWL BYCATCH ON FISH REPRODUCTION IN NORTHEASTERN BRAZIL O IMPACTO DA PESCA ACESSÓRIA DO ARRASTO CAMAROEIRO NA REPRODUÇÃO DE PEIXES NO NORDESTE DO BRASIL |
title |
THE IMPACT OF SHRIMP TRAWL BYCATCH ON FISH REPRODUCTION IN NORTHEASTERN BRAZIL |
spellingShingle |
THE IMPACT OF SHRIMP TRAWL BYCATCH ON FISH REPRODUCTION IN NORTHEASTERN BRAZIL Bomfim, Aline da Costa coastal zone; diversity; ichthyofauna; reproductive stages; sexual maturity. |
title_short |
THE IMPACT OF SHRIMP TRAWL BYCATCH ON FISH REPRODUCTION IN NORTHEASTERN BRAZIL |
title_full |
THE IMPACT OF SHRIMP TRAWL BYCATCH ON FISH REPRODUCTION IN NORTHEASTERN BRAZIL |
title_fullStr |
THE IMPACT OF SHRIMP TRAWL BYCATCH ON FISH REPRODUCTION IN NORTHEASTERN BRAZIL |
title_full_unstemmed |
THE IMPACT OF SHRIMP TRAWL BYCATCH ON FISH REPRODUCTION IN NORTHEASTERN BRAZIL |
title_sort |
THE IMPACT OF SHRIMP TRAWL BYCATCH ON FISH REPRODUCTION IN NORTHEASTERN BRAZIL |
author |
Bomfim, Aline da Costa |
author_facet |
Bomfim, Aline da Costa Farias, Daniel Solon Dias Morais, Iara CecÃlia da Costa Rossi, Silmara Gavilan, Simone Almeida Silva, Flávio José de Lima |
author_role |
author |
author2 |
Farias, Daniel Solon Dias Morais, Iara CecÃlia da Costa Rossi, Silmara Gavilan, Simone Almeida Silva, Flávio José de Lima |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Programa de Monitoramento de Praias da Bacia Potiguar (PMP-BP) Projeto Cetáceos da Costa Branca, Universidade do Estado do Rio Grande do Norte (UERN) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES). |
dc.contributor.author.fl_str_mv |
Bomfim, Aline da Costa Farias, Daniel Solon Dias Morais, Iara CecÃlia da Costa Rossi, Silmara Gavilan, Simone Almeida Silva, Flávio José de Lima |
dc.subject.none.fl_str_mv |
|
dc.subject.por.fl_str_mv |
coastal zone; diversity; ichthyofauna; reproductive stages; sexual maturity. |
topic |
coastal zone; diversity; ichthyofauna; reproductive stages; sexual maturity. |
description |
In the west coast of Rio Grande do Norte many small-scale fisheries targeting mostly shrimp but accidentally catch a large number of fish. Our aim was to evaluate the Ichthyofauna composition and distribution in Potiguar Basin, northeastern Brazil, in order to elucidate the impact of bycatch on fish reproduction. The study area was divided into four stretches (A, B, C and D), and we sampled 1,426 specimens classified into 10 orders, 23 families and 49 species. We obtained biometric data and gonadal tissue in order to determine the reproductive aspects of the studied fish. Stretch A had the highest values of evenness and dominance; the highest values of abundance, biomass, richness and diversity were found in stretches B, C and D. Analysis based on faunal similarity revealed three groups: I (found in stretches B and D), II (C), and III (A). In regards to reproductive phase, 76.3% of the specimens were classified as 'immatureâ, 16.7% as âmaturingâ and 7% as âmatureâ. Through the anatomical and histological analyzes of the gonads and the size of first maturation, we verified that the species Pomadasys corvinaeformes, Menticirrhus littoralis and Larimus breviceps were negatively related to fishing activity; on the other hand, Pellona harroweri was positively related. Our findings indicate that the incidental capture of some non-target species can affects predominantly individuals considered immature, i.e. without reproductive potencial, an indicative of non-sustainable fishing in region.Keywords: coastal zone; diversity; ichthyofauna; reproductive stages; sexual maturity. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-03-31 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artigo Avaliado pelos Pares |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.unifap.br/index.php/biota/article/view/4317 10.18561/2179-5746/biotaamazonia.v9n1p37-42 |
url |
https://periodicos.unifap.br/index.php/biota/article/view/4317 |
identifier_str_mv |
10.18561/2179-5746/biotaamazonia.v9n1p37-42 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.unifap.br/index.php/biota/article/view/4317/v9n1p37-42.pdf https://periodicos.unifap.br/index.php/biota/article/downloadSuppFile/4317/675 https://periodicos.unifap.br/index.php/biota/article/downloadSuppFile/4317/682 https://periodicos.unifap.br/index.php/biota/article/downloadSuppFile/4317/683 https://periodicos.unifap.br/index.php/biota/article/downloadSuppFile/4317/684 https://periodicos.unifap.br/index.php/biota/article/downloadSuppFile/4317/685 https://periodicos.unifap.br/index.php/biota/article/downloadSuppFile/4317/686 https://periodicos.unifap.br/index.php/biota/article/downloadSuppFile/4317/687 |
dc.rights.driver.fl_str_mv |
Direitos autorais 2019 Biota Amazônia (Biote Amazonie, Biota Amazonia, Amazonian Biota) http://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Direitos autorais 2019 Biota Amazônia (Biote Amazonie, Biota Amazonia, Amazonian Biota) http://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.coverage.none.fl_str_mv |
|
dc.publisher.none.fl_str_mv |
Universidade Federal do Amapá |
publisher.none.fl_str_mv |
Universidade Federal do Amapá |
dc.source.none.fl_str_mv |
Biota Amazônia (Biote Amazonie, Biota Amazonia, Amazonian Biota); v. 9, n. 1 (2019); 37-42 2179-5746 reponame:Biota Amazônia instname:Universidade Federal do Amapá (UNIFAP) instacron:UNIFAP |
instname_str |
Universidade Federal do Amapá (UNIFAP) |
instacron_str |
UNIFAP |
institution |
UNIFAP |
reponame_str |
Biota Amazônia |
collection |
Biota Amazônia |
repository.name.fl_str_mv |
Biota Amazônia - Universidade Federal do Amapá (UNIFAP) |
repository.mail.fl_str_mv |
||juliosa@unifap.br |
_version_ |
1800218371696885760 |