Age and growth of the threatened endemic skate Rioraja agassizii (Chondrichthyes, Arhynchobatidae) in the western South Atlantic
Main Author: | |
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Publication Date: | 2019 |
Other Authors: | , , |
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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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 |
|
_version_ |
1799964473288556544 |