Use of a nursery area by cownose rays (Rhinopteridae) in southeastern Brazil

Detalhes bibliográficos
Autor(a) principal: Rangel,Bianca S.
Data de Publicação: 2018
Outros Autores: Rodrigues,Alexandre, Moreira,Renata G.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Neotropical ichthyology (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100213
Resumo: ABSTRACT Using non-lethal methods for data collection of individuals and participatory monitoring by fishermen, we provide the first empirical evidence of the use of a nursery area by neonate and young-of-the-year cownose rays Rhinoptera bonasus and R. brasiliensis in southeastern Brazil. Two methods were used to collect data: (1) information provided by fishermen (reports, pictures, and videos) and (2) field sampling by researchers. A total of 746 cownose rays were captured; 113 have been identified as R. bonasus, 15 as R. brasiliensis, and 618 were reported by fishermen and could not be identified to the species. Records of newborns were made only in late spring and summer in 2015, 2016, and 2017, which suggests an annual reproductive cycle, with birth in late spring, extending to summer. A repeated use of this area by R. bonasus suggests that it is potentially important to the reproduction of this species. However, R. brasiliensis requires more studies. Small increases in mortality, resulting from increased fishing or other anthropogenic stressors, can have a disproportionately large effect on population viability. Thus, management of areas used during critical stages of the life cycle of rays is crucial to their conservation.
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spelling Use of a nursery area by cownose rays (Rhinopteridae) in southeastern BrazilEarly life-historyNeonatesNewbornNon-lethalYoung of the yearABSTRACT Using non-lethal methods for data collection of individuals and participatory monitoring by fishermen, we provide the first empirical evidence of the use of a nursery area by neonate and young-of-the-year cownose rays Rhinoptera bonasus and R. brasiliensis in southeastern Brazil. Two methods were used to collect data: (1) information provided by fishermen (reports, pictures, and videos) and (2) field sampling by researchers. A total of 746 cownose rays were captured; 113 have been identified as R. bonasus, 15 as R. brasiliensis, and 618 were reported by fishermen and could not be identified to the species. Records of newborns were made only in late spring and summer in 2015, 2016, and 2017, which suggests an annual reproductive cycle, with birth in late spring, extending to summer. A repeated use of this area by R. bonasus suggests that it is potentially important to the reproduction of this species. However, R. brasiliensis requires more studies. Small increases in mortality, resulting from increased fishing or other anthropogenic stressors, can have a disproportionately large effect on population viability. Thus, management of areas used during critical stages of the life cycle of rays is crucial to their conservation.Sociedade Brasileira de Ictiologia2018-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100213Neotropical Ichthyology v.16 n.1 2018reponame:Neotropical ichthyology (Online)instname:Sociedade Brasileira de Ictiologia (SBI)instacron:SBI10.1590/1982-0224-20170089info:eu-repo/semantics/openAccessRangel,Bianca S.Rodrigues,AlexandreMoreira,Renata G.eng2018-03-28T00:00:00Zoai:scielo:S1679-62252018000100213Revistahttp://www.ufrgs.br/ni/https://old.scielo.br/oai/scielo-oai.php||neoichth@nupelia.uem.br1982-02241679-6225opendoar:2018-03-28T00:00Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI)false
dc.title.none.fl_str_mv Use of a nursery area by cownose rays (Rhinopteridae) in southeastern Brazil
title Use of a nursery area by cownose rays (Rhinopteridae) in southeastern Brazil
spellingShingle Use of a nursery area by cownose rays (Rhinopteridae) in southeastern Brazil
Rangel,Bianca S.
Early life-history
Neonates
Newborn
Non-lethal
Young of the year
title_short Use of a nursery area by cownose rays (Rhinopteridae) in southeastern Brazil
title_full Use of a nursery area by cownose rays (Rhinopteridae) in southeastern Brazil
title_fullStr Use of a nursery area by cownose rays (Rhinopteridae) in southeastern Brazil
title_full_unstemmed Use of a nursery area by cownose rays (Rhinopteridae) in southeastern Brazil
title_sort Use of a nursery area by cownose rays (Rhinopteridae) in southeastern Brazil
author Rangel,Bianca S.
author_facet Rangel,Bianca S.
Rodrigues,Alexandre
Moreira,Renata G.
author_role author
author2 Rodrigues,Alexandre
Moreira,Renata G.
author2_role author
author
dc.contributor.author.fl_str_mv Rangel,Bianca S.
Rodrigues,Alexandre
Moreira,Renata G.
dc.subject.por.fl_str_mv Early life-history
Neonates
Newborn
Non-lethal
Young of the year
topic Early life-history
Neonates
Newborn
Non-lethal
Young of the year
description ABSTRACT Using non-lethal methods for data collection of individuals and participatory monitoring by fishermen, we provide the first empirical evidence of the use of a nursery area by neonate and young-of-the-year cownose rays Rhinoptera bonasus and R. brasiliensis in southeastern Brazil. Two methods were used to collect data: (1) information provided by fishermen (reports, pictures, and videos) and (2) field sampling by researchers. A total of 746 cownose rays were captured; 113 have been identified as R. bonasus, 15 as R. brasiliensis, and 618 were reported by fishermen and could not be identified to the species. Records of newborns were made only in late spring and summer in 2015, 2016, and 2017, which suggests an annual reproductive cycle, with birth in late spring, extending to summer. A repeated use of this area by R. bonasus suggests that it is potentially important to the reproduction of this species. However, R. brasiliensis requires more studies. Small increases in mortality, resulting from increased fishing or other anthropogenic stressors, can have a disproportionately large effect on population viability. Thus, management of areas used during critical stages of the life cycle of rays is crucial to their conservation.
publishDate 2018
dc.date.none.fl_str_mv 2018-01-01
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=S1679-62252018000100213
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100213
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1982-0224-20170089
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 Sociedade Brasileira de Ictiologia
publisher.none.fl_str_mv Sociedade Brasileira de Ictiologia
dc.source.none.fl_str_mv Neotropical Ichthyology v.16 n.1 2018
reponame:Neotropical ichthyology (Online)
instname:Sociedade Brasileira de Ictiologia (SBI)
instacron:SBI
instname_str Sociedade Brasileira de Ictiologia (SBI)
instacron_str SBI
institution SBI
reponame_str Neotropical ichthyology (Online)
collection Neotropical ichthyology (Online)
repository.name.fl_str_mv Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI)
repository.mail.fl_str_mv ||neoichth@nupelia.uem.br
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