Age and growth of the threatened endemic skate Rioraja agassizii (Chondrichthyes, Arhynchobatidae) in the western South Atlantic

Bibliographic Details
Main Author: Caltabellotta, F. P.
Publication Date: 2019
Other Authors: Silva, F. M., Motta, F. S., Gadig, O. B. F. [UNESP]
Format: Article
Language: eng
Source: Repositório Institucional da UNESP
Download full: http://dx.doi.org/10.1071/MF18010
http://hdl.handle.net/11449/185215
Summary: The Rio skate Rioraja agassizii is a threatened endemic skate species frequently caught as bycatch in the western South Atlantic. However, there is no biological information about its age and growth parameters, which would be necessary to provide science-based information for the development of management strategies for this species. The aim of the present study was to provide information about the age and growth parameters of R. agassizii. In all, 138 vertebrae from individuals ranging in size from 9.0 to 53.2-cm total length (TL) were analysed. The edge analysis indicated a trend for annual band deposition in the vertebrae. Maximum ages estimated for males and females were 6 and 10 years respectively. Akaike's information criterion indicated that the modified two-parameter form of the von Bertalanffy growth function (using length at birth L-0 = 9.0 cm TL) provided the best fit, with derived parameters of theoretical maximum length L-infinity = 49.6 cm TL and growth coefficient k = 0.27 for males and L-infinity = 59.0 cm TL and k = 0.22 for females. Our results are important to understanding the resilience of this skate species to harvest, which can contribute to the development of fisheries management strategies and conservation programs.
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spelling Age and growth of the threatened endemic skate Rioraja agassizii (Chondrichthyes, Arhynchobatidae) in the western South Atlanticfisheries managementpopulation dynamicsRajiformesThe Rio skate Rioraja agassizii is a threatened endemic skate species frequently caught as bycatch in the western South Atlantic. However, there is no biological information about its age and growth parameters, which would be necessary to provide science-based information for the development of management strategies for this species. The aim of the present study was to provide information about the age and growth parameters of R. agassizii. In all, 138 vertebrae from individuals ranging in size from 9.0 to 53.2-cm total length (TL) were analysed. The edge analysis indicated a trend for annual band deposition in the vertebrae. Maximum ages estimated for males and females were 6 and 10 years respectively. Akaike's information criterion indicated that the modified two-parameter form of the von Bertalanffy growth function (using length at birth L-0 = 9.0 cm TL) provided the best fit, with derived parameters of theoretical maximum length L-infinity = 49.6 cm TL and growth coefficient k = 0.27 for males and L-infinity = 59.0 cm TL and k = 0.22 for females. Our results are important to understanding the resilience of this skate species to harvest, which can contribute to the development of fisheries management strategies and conservation programs.Univ Florida, Florida Museum Nat Hist, Florida Program Shark Res, 1659 Museum Rd, Gainesville, FL 32611 USAFundacao Univ Fed Rio Grande, Inst Oceanog, Lab Ecol Paisagem Costeira, Ave Italia Quilometro 8, BR-96201900 Rio Grande, RS, BrazilUniv Fed Sao Paulo, Inst Mar, Lab Ecol & Conservacao Marinha, Rua Dr Carvalho de Mendonca,144 Encruzilhada, BR-11070100 Santos, SP, BrazilUniv Estadual Paulista, Lab Pesquisa Elasmobranquios, Campus Litoral Paulista, BR-11380972 Sao Vicente, SP, BrazilUniv Estadual Paulista, Lab Pesquisa Elasmobranquios, Campus Litoral Paulista, BR-11380972 Sao Vicente, SP, BrazilCsiro PublishingUniv FloridaFundacao Univ Fed Rio GrandeUniversidade Federal de São Paulo (UNIFESP)Universidade Estadual Paulista (Unesp)Caltabellotta, F. P.Silva, F. M.Motta, F. S.Gadig, O. B. F. [UNESP]2019-10-04T12:33:33Z2019-10-04T12:33:33Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article84-92http://dx.doi.org/10.1071/MF18010Marine And Freshwater Research. Clayton: Csiro Publishing, v. 70, n. 1, p. 84-92, 2019.1323-1650http://hdl.handle.net/11449/18521510.1071/MF18010WOS:000453226400008Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMarine And Freshwater Researchinfo:eu-repo/semantics/openAccess2021-10-23T19:23:45Zoai:repositorio.unesp.br:11449/185215Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T19:23:45Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Age and growth of the threatened endemic skate Rioraja agassizii (Chondrichthyes, Arhynchobatidae) in the western South Atlantic
title Age and growth of the threatened endemic skate Rioraja agassizii (Chondrichthyes, Arhynchobatidae) in the western South Atlantic
spellingShingle Age and growth of the threatened endemic skate Rioraja agassizii (Chondrichthyes, Arhynchobatidae) in the western South Atlantic
Caltabellotta, F. P.
fisheries management
population dynamics
Rajiformes
title_short Age and growth of the threatened endemic skate Rioraja agassizii (Chondrichthyes, Arhynchobatidae) in the western South Atlantic
title_full Age and growth of the threatened endemic skate Rioraja agassizii (Chondrichthyes, Arhynchobatidae) in the western South Atlantic
title_fullStr Age and growth of the threatened endemic skate Rioraja agassizii (Chondrichthyes, Arhynchobatidae) in the western South Atlantic
title_full_unstemmed Age and growth of the threatened endemic skate Rioraja agassizii (Chondrichthyes, Arhynchobatidae) in the western South Atlantic
title_sort Age and growth of the threatened endemic skate Rioraja agassizii (Chondrichthyes, Arhynchobatidae) in the western South Atlantic
author Caltabellotta, F. P.
author_facet Caltabellotta, F. P.
Silva, F. M.
Motta, F. S.
Gadig, O. B. F. [UNESP]
author_role author
author2 Silva, F. M.
Motta, F. S.
Gadig, O. B. F. [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Univ Florida
Fundacao Univ Fed Rio Grande
Universidade Federal de São Paulo (UNIFESP)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Caltabellotta, F. P.
Silva, F. M.
Motta, F. S.
Gadig, O. B. F. [UNESP]
dc.subject.por.fl_str_mv fisheries management
population dynamics
Rajiformes
topic fisheries management
population dynamics
Rajiformes
description The Rio skate Rioraja agassizii is a threatened endemic skate species frequently caught as bycatch in the western South Atlantic. However, there is no biological information about its age and growth parameters, which would be necessary to provide science-based information for the development of management strategies for this species. The aim of the present study was to provide information about the age and growth parameters of R. agassizii. In all, 138 vertebrae from individuals ranging in size from 9.0 to 53.2-cm total length (TL) were analysed. The edge analysis indicated a trend for annual band deposition in the vertebrae. Maximum ages estimated for males and females were 6 and 10 years respectively. Akaike's information criterion indicated that the modified two-parameter form of the von Bertalanffy growth function (using length at birth L-0 = 9.0 cm TL) provided the best fit, with derived parameters of theoretical maximum length L-infinity = 49.6 cm TL and growth coefficient k = 0.27 for males and L-infinity = 59.0 cm TL and k = 0.22 for females. Our results are important to understanding the resilience of this skate species to harvest, which can contribute to the development of fisheries management strategies and conservation programs.
publishDate 2019
dc.date.none.fl_str_mv 2019-10-04T12:33:33Z
2019-10-04T12:33:33Z
2019-01-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1071/MF18010
Marine And Freshwater Research. Clayton: Csiro Publishing, v. 70, n. 1, p. 84-92, 2019.
1323-1650
http://hdl.handle.net/11449/185215
10.1071/MF18010
WOS:000453226400008
url http://dx.doi.org/10.1071/MF18010
http://hdl.handle.net/11449/185215
identifier_str_mv Marine And Freshwater Research. Clayton: Csiro Publishing, v. 70, n. 1, p. 84-92, 2019.
1323-1650
10.1071/MF18010
WOS:000453226400008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Marine And Freshwater Research
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 84-92
dc.publisher.none.fl_str_mv Csiro Publishing
publisher.none.fl_str_mv Csiro Publishing
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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