Restricted connectivity and population genetic fragility in a globally endangered Hammerhead Shark
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s11160-020-09607-x http://hdl.handle.net/11449/200581 |
Resumo: | Vagile, large-bodied marine organisms frequently have wide range dispersion but also dependence on coastal habitats for part of their life history. These characteristics may induce complex population genetic structure patterns, with resulting implications for the management of exploited populations. The scalloped hammerhead, Sphyrna lewini, is a cosmopolitan, migratory shark in tropical and warm temperate waters, inhabiting coastal bays during parturition and juvenile development, and the open ocean as adults. Here, we investigated the genetic connectivity and diversity of S. lewini in the western Atlantic using large sample coverage (N = 308), and data from whole mitochondrial control region (mtCR) sequences and ten nuclear microsatellite markers We detected significant population genetic structure with both mtCR and microsatellites markers (mtCR: ΦST = 0.60; p < 0.001; microsatellites: Dest 0.0794, p = 0.001, FST = 0.046, p < 0.05), and isolation by distance (mtCR r = 0.363, p = 0.009; microsatellites markers r = 0.638, p = 0.007). Migration and gene flow patterns were asymmetric and female reproductive philopatry is postulated to explain population subdivisions. The notable population differentiation at microsatellites markers indicates low-levels of male-mediated gene flow in the western Atlantic. The overall effective population size was estimated as 299 (215–412 CI), and there was no evidence of strong or recent bottleneck effects. Findings of at least three management units, moderate genetic diversity, and low effective population size in the context of current overfishing calls for intensive management aimed at short and long-term conservation for this endangered species in the western Atlantic Ocean. |
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Restricted connectivity and population genetic fragility in a globally endangered Hammerhead Sharkelasmobranch conservationEndangered speciesGenetic connectivityGenetic diversityVagile, large-bodied marine organisms frequently have wide range dispersion but also dependence on coastal habitats for part of their life history. These characteristics may induce complex population genetic structure patterns, with resulting implications for the management of exploited populations. The scalloped hammerhead, Sphyrna lewini, is a cosmopolitan, migratory shark in tropical and warm temperate waters, inhabiting coastal bays during parturition and juvenile development, and the open ocean as adults. Here, we investigated the genetic connectivity and diversity of S. lewini in the western Atlantic using large sample coverage (N = 308), and data from whole mitochondrial control region (mtCR) sequences and ten nuclear microsatellite markers We detected significant population genetic structure with both mtCR and microsatellites markers (mtCR: ΦST = 0.60; p < 0.001; microsatellites: Dest 0.0794, p = 0.001, FST = 0.046, p < 0.05), and isolation by distance (mtCR r = 0.363, p = 0.009; microsatellites markers r = 0.638, p = 0.007). Migration and gene flow patterns were asymmetric and female reproductive philopatry is postulated to explain population subdivisions. The notable population differentiation at microsatellites markers indicates low-levels of male-mediated gene flow in the western Atlantic. The overall effective population size was estimated as 299 (215–412 CI), and there was no evidence of strong or recent bottleneck effects. Findings of at least three management units, moderate genetic diversity, and low effective population size in the context of current overfishing calls for intensive management aimed at short and long-term conservation for this endangered species in the western Atlantic Ocean.Guy Harvey Ocean FoundationSave Our Seas FoundationFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Laboratório Genômica e Evolução Molecular Departamento de Genética Instituto de Biociências Universidade Estadual Paulista – UNESP, Rua Professor Doutor Antonio Celso Wagner Zanin s/nº, Rubião JúniorDepartamento de Ciências do Mar Instituto do Mar Universidade Federal de São Paulo UNIFESP, Rua Carvalho de Mendonça, 144Save Our Seas Shark Research Center USA and Guy Harvey Research Institute Nova Southeastern University, 8000 North Ocean DriveLaboratório de Genética e Conservação Universidade Santa Cecília - UNISANTA, Rua Cesário Mota, 8Laboratório de Pesquisa de Elasmobrânquios Instituto de Biociências Universidade Estadual Paulista – UNESP, Campus do Litoral Paulista, Praça Infante D. Henrique, s/nLaboratório Genômica Integrativa Departamento de Morfologia Instituto de Biociências Universidade Estadual Paulista – UNESPLaboratório Genômica e Evolução Molecular Departamento de Genética Instituto de Biociências Universidade Estadual Paulista – UNESP, Rua Professor Doutor Antonio Celso Wagner Zanin s/nº, Rubião JúniorLaboratório de Pesquisa de Elasmobrânquios Instituto de Biociências Universidade Estadual Paulista – UNESP, Campus do Litoral Paulista, Praça Infante D. Henrique, s/nLaboratório Genômica Integrativa Departamento de Morfologia Instituto de Biociências Universidade Estadual Paulista – UNESPGuy Harvey Ocean Foundation: 0000Save Our Seas Foundation: 000000FAPESP: 2007/03065-5FAPESP: 2007/03067-8FAPESP: 2017/02420-8Universidade Estadual Paulista (Unesp)Universidade Federal de São Paulo (UNIFESP)Nova Southeastern UniversityUniversidade Santa Cecília - UNISANTAPinhal, Danillo [UNESP]Domingues, Rodrigo R.Bruels, Christine C.Ferrette, Bruno L. S.Gadig, Otto B. F. [UNESP]Shivji, Mahmood S.Martins, Cesar [UNESP]2020-12-12T02:10:22Z2020-12-12T02:10:22Z2020-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article501-517http://dx.doi.org/10.1007/s11160-020-09607-xReviews in Fish Biology and Fisheries, v. 30, n. 3, p. 501-517, 2020.1573-51840960-3166http://hdl.handle.net/11449/20058110.1007/s11160-020-09607-x2-s2.0-85086089071Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengReviews in Fish Biology and Fisheriesinfo:eu-repo/semantics/openAccess2021-10-23T14:48:13Zoai:repositorio.unesp.br:11449/200581Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-06T00:11:54.663728Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Restricted connectivity and population genetic fragility in a globally endangered Hammerhead Shark |
title |
Restricted connectivity and population genetic fragility in a globally endangered Hammerhead Shark |
spellingShingle |
Restricted connectivity and population genetic fragility in a globally endangered Hammerhead Shark Pinhal, Danillo [UNESP] elasmobranch conservation Endangered species Genetic connectivity Genetic diversity |
title_short |
Restricted connectivity and population genetic fragility in a globally endangered Hammerhead Shark |
title_full |
Restricted connectivity and population genetic fragility in a globally endangered Hammerhead Shark |
title_fullStr |
Restricted connectivity and population genetic fragility in a globally endangered Hammerhead Shark |
title_full_unstemmed |
Restricted connectivity and population genetic fragility in a globally endangered Hammerhead Shark |
title_sort |
Restricted connectivity and population genetic fragility in a globally endangered Hammerhead Shark |
author |
Pinhal, Danillo [UNESP] |
author_facet |
Pinhal, Danillo [UNESP] Domingues, Rodrigo R. Bruels, Christine C. Ferrette, Bruno L. S. Gadig, Otto B. F. [UNESP] Shivji, Mahmood S. Martins, Cesar [UNESP] |
author_role |
author |
author2 |
Domingues, Rodrigo R. Bruels, Christine C. Ferrette, Bruno L. S. Gadig, Otto B. F. [UNESP] Shivji, Mahmood S. Martins, Cesar [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal de São Paulo (UNIFESP) Nova Southeastern University Universidade Santa Cecília - UNISANTA |
dc.contributor.author.fl_str_mv |
Pinhal, Danillo [UNESP] Domingues, Rodrigo R. Bruels, Christine C. Ferrette, Bruno L. S. Gadig, Otto B. F. [UNESP] Shivji, Mahmood S. Martins, Cesar [UNESP] |
dc.subject.por.fl_str_mv |
elasmobranch conservation Endangered species Genetic connectivity Genetic diversity |
topic |
elasmobranch conservation Endangered species Genetic connectivity Genetic diversity |
description |
Vagile, large-bodied marine organisms frequently have wide range dispersion but also dependence on coastal habitats for part of their life history. These characteristics may induce complex population genetic structure patterns, with resulting implications for the management of exploited populations. The scalloped hammerhead, Sphyrna lewini, is a cosmopolitan, migratory shark in tropical and warm temperate waters, inhabiting coastal bays during parturition and juvenile development, and the open ocean as adults. Here, we investigated the genetic connectivity and diversity of S. lewini in the western Atlantic using large sample coverage (N = 308), and data from whole mitochondrial control region (mtCR) sequences and ten nuclear microsatellite markers We detected significant population genetic structure with both mtCR and microsatellites markers (mtCR: ΦST = 0.60; p < 0.001; microsatellites: Dest 0.0794, p = 0.001, FST = 0.046, p < 0.05), and isolation by distance (mtCR r = 0.363, p = 0.009; microsatellites markers r = 0.638, p = 0.007). Migration and gene flow patterns were asymmetric and female reproductive philopatry is postulated to explain population subdivisions. The notable population differentiation at microsatellites markers indicates low-levels of male-mediated gene flow in the western Atlantic. The overall effective population size was estimated as 299 (215–412 CI), and there was no evidence of strong or recent bottleneck effects. Findings of at least three management units, moderate genetic diversity, and low effective population size in the context of current overfishing calls for intensive management aimed at short and long-term conservation for this endangered species in the western Atlantic Ocean. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T02:10:22Z 2020-12-12T02:10:22Z 2020-09-01 |
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/10.1007/s11160-020-09607-x Reviews in Fish Biology and Fisheries, v. 30, n. 3, p. 501-517, 2020. 1573-5184 0960-3166 http://hdl.handle.net/11449/200581 10.1007/s11160-020-09607-x 2-s2.0-85086089071 |
url |
http://dx.doi.org/10.1007/s11160-020-09607-x http://hdl.handle.net/11449/200581 |
identifier_str_mv |
Reviews in Fish Biology and Fisheries, v. 30, n. 3, p. 501-517, 2020. 1573-5184 0960-3166 10.1007/s11160-020-09607-x 2-s2.0-85086089071 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Reviews in Fish Biology and Fisheries |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
501-517 |
dc.source.none.fl_str_mv |
Scopus 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_ |
1808128242058526720 |