Selectivity of a fishing gear used in the catch of Anomalocardia flexuosa in the Northeast of Brazil
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Ciência Rural |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000800654 |
Resumo: | ABSTRACT: A type of dredge was introduced as fishing gear along the extractive bank of Mangue Seco - PE from which the largest annual catch of Anomalocardia flexuosa in the world is extracted. This study was carried out with the objective of estimating the selectivity of the new fishing gear and quantitatively evaluating the length classes most compromised by the catches, especially considering 20 mm as the reference value. Specimens larger than this size are most likely to be mature. For the selectivity estimation, the methodology using codends (16 or 20 mm) and small meshed cover (2 mm) was used. To estimate the selectivity parameters, a logistic regression and the Bayesian approach were used. The transition between the state in which the specimen is invulnerable to the fishing gear and vulnerable occurs between 10 and 18 mm, using a 16 mm mesh, and using a 20 mm mesh, this transition is between 14 and 20 mm. Dredgers with 16 mm and 20 mm mesh compromise a large proportion of specimens smaller than 20 mm. If the intention is to protect this part of the population, measures such as total restriction of the 16 mm mesh and use of the 20 mm mesh should be necessary only in the months of less catching incidences, or increasing the mesh to 25 mm. |
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Ciência rural (Online) |
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spelling |
Selectivity of a fishing gear used in the catch of Anomalocardia flexuosa in the Northeast of Brazilcoastal ecosystemmangue seco beachBenthic macrofaunaAnomalocardia brasilianafishingdredgeABSTRACT: A type of dredge was introduced as fishing gear along the extractive bank of Mangue Seco - PE from which the largest annual catch of Anomalocardia flexuosa in the world is extracted. This study was carried out with the objective of estimating the selectivity of the new fishing gear and quantitatively evaluating the length classes most compromised by the catches, especially considering 20 mm as the reference value. Specimens larger than this size are most likely to be mature. For the selectivity estimation, the methodology using codends (16 or 20 mm) and small meshed cover (2 mm) was used. To estimate the selectivity parameters, a logistic regression and the Bayesian approach were used. The transition between the state in which the specimen is invulnerable to the fishing gear and vulnerable occurs between 10 and 18 mm, using a 16 mm mesh, and using a 20 mm mesh, this transition is between 14 and 20 mm. Dredgers with 16 mm and 20 mm mesh compromise a large proportion of specimens smaller than 20 mm. If the intention is to protect this part of the population, measures such as total restriction of the 16 mm mesh and use of the 20 mm mesh should be necessary only in the months of less catching incidences, or increasing the mesh to 25 mm.Universidade Federal de Santa Maria2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000800654Ciência Rural v.50 n.8 2020reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/0103-8478cr20191022info:eu-repo/semantics/openAccessLima,Severino Adriano de OliveiraAndrade,Humber AgrelliGálvez,Alfredo Oliveraeng2020-07-07T00:00:00ZRevista |
dc.title.none.fl_str_mv |
Selectivity of a fishing gear used in the catch of Anomalocardia flexuosa in the Northeast of Brazil |
title |
Selectivity of a fishing gear used in the catch of Anomalocardia flexuosa in the Northeast of Brazil |
spellingShingle |
Selectivity of a fishing gear used in the catch of Anomalocardia flexuosa in the Northeast of Brazil Lima,Severino Adriano de Oliveira coastal ecosystem mangue seco beach Benthic macrofauna Anomalocardia brasiliana fishing dredge |
title_short |
Selectivity of a fishing gear used in the catch of Anomalocardia flexuosa in the Northeast of Brazil |
title_full |
Selectivity of a fishing gear used in the catch of Anomalocardia flexuosa in the Northeast of Brazil |
title_fullStr |
Selectivity of a fishing gear used in the catch of Anomalocardia flexuosa in the Northeast of Brazil |
title_full_unstemmed |
Selectivity of a fishing gear used in the catch of Anomalocardia flexuosa in the Northeast of Brazil |
title_sort |
Selectivity of a fishing gear used in the catch of Anomalocardia flexuosa in the Northeast of Brazil |
author |
Lima,Severino Adriano de Oliveira |
author_facet |
Lima,Severino Adriano de Oliveira Andrade,Humber Agrelli Gálvez,Alfredo Olivera |
author_role |
author |
author2 |
Andrade,Humber Agrelli Gálvez,Alfredo Olivera |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Lima,Severino Adriano de Oliveira Andrade,Humber Agrelli Gálvez,Alfredo Olivera |
dc.subject.por.fl_str_mv |
coastal ecosystem mangue seco beach Benthic macrofauna Anomalocardia brasiliana fishing dredge |
topic |
coastal ecosystem mangue seco beach Benthic macrofauna Anomalocardia brasiliana fishing dredge |
description |
ABSTRACT: A type of dredge was introduced as fishing gear along the extractive bank of Mangue Seco - PE from which the largest annual catch of Anomalocardia flexuosa in the world is extracted. This study was carried out with the objective of estimating the selectivity of the new fishing gear and quantitatively evaluating the length classes most compromised by the catches, especially considering 20 mm as the reference value. Specimens larger than this size are most likely to be mature. For the selectivity estimation, the methodology using codends (16 or 20 mm) and small meshed cover (2 mm) was used. To estimate the selectivity parameters, a logistic regression and the Bayesian approach were used. The transition between the state in which the specimen is invulnerable to the fishing gear and vulnerable occurs between 10 and 18 mm, using a 16 mm mesh, and using a 20 mm mesh, this transition is between 14 and 20 mm. Dredgers with 16 mm and 20 mm mesh compromise a large proportion of specimens smaller than 20 mm. If the intention is to protect this part of the population, measures such as total restriction of the 16 mm mesh and use of the 20 mm mesh should be necessary only in the months of less catching incidences, or increasing the mesh to 25 mm. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000800654 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000800654 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0103-8478cr20191022 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Rural v.50 n.8 2020 reponame:Ciência Rural instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Rural |
collection |
Ciência Rural |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
|
_version_ |
1749140554854170624 |