Selectivity of a fishing gear used in the catch of Anomalocardia flexuosa in the Northeast of Brazil

Detalhes bibliográficos
Autor(a) principal: Lima,Severino Adriano de Oliveira
Data de Publicação: 2020
Outros Autores: Andrade,Humber Agrelli, Gálvez,Alfredo Olivera
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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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
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