Effective population size of broad-snouted caiman (Caiman latirostris) in Brazil: A historical and spatial perspective

Autores
Zucoloto, Rodrigo Barban; Cafezeiro Bomfim, Gilberto; de Campos Fernandes, Flora Maria; Selbach Schnadelbach, Alessandra; Piña, Carlos Ignacio; Verdade, Luciano Martins
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Caiman latirostris has a large geographic distribution, that includes Argentina, Bolivia, Brazil, Paraguay, and Uruguay. In Brazil illegal hunting and land use change have caused population decline, relatively well documented in the last three decades. Due to such circumstances, the estimate of species effective population size might help analyze its viability. Single-sample estimator was used to estimate current effective population size (Ne) of broad-snouted caiman populations in representative areas of the species range in Brazil. For the analyzes, genotypes previously obtained were used for subpopulations of the captive colony of the University of São Paulo (USP) and for wild subpopulations. The microsatellites used were Amiμ8, Amiμ11, Amiμ13, Amiμ20, Claμ2, Claμ5, Claμ6, Claμ7, Claμ8, Claμ9 and Claμ10. The 11 loci analyzed produced 18.27 alleles on average. Wild populations showed significant genic and genotypic differentiation among them (p < 0.01). Population structure analyses (Rho-statistics) at Genepop for all loci was 0.376. The effective number of population sizes (Ɵ, the Ne estimator of Migrate-n software) of Caiman latirostris populations from the captive colony at the USP was 117.1 (N = 7) for NRF, 115.2 (N = 4) for Fm1, and 107.5 (N = 4) for Fm5, on the oposite side, the mean value of theta (Ɵ) was 7.7 (N = 51) for the Atlantic SE basin wild population, 9.4 (N = 42) for the Atlantic N/NE basin wild population and 9.6 (N = 91) for the Paraná basin wild population. The mean number of migrants (M of Migrate-n software) varied from 1.7 to 1.9 estimated by migrate-n are comparable to 1.3 estimated by Genepop. It is observed that in most wild population only few adults effectively contribute to genetic variation. The following guidlines are proposed as management actions: (1) an update of population sampling; (2) redefinition, delimitation and conservation of natural habitats; and (3) new conservation genetic studies with special attention to genetic diversity recovery.
Fil: Zucoloto, Rodrigo Barban. Universidade Federal da Bahia; Brasil
Fil: Cafezeiro Bomfim, Gilberto. Universidade Federal da Bahia; Brasil
Fil: de Campos Fernandes, Flora Maria. Universidade Federal da Bahia; Brasil
Fil: Selbach Schnadelbach, Alessandra. Universidade Federal da Bahia; Brasil
Fil: Piña, Carlos Ignacio. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina
Fil: Verdade, Luciano Martins. Universidade de Sao Paulo; Brasil
Materia
ALLIGATORIDAE
CONSERVATION GENETICS
MOLECULAR ECOLOGY
MOLECULAR MARKERS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/164589
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/164589
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effective population size of broad-snouted caiman (Caiman latirostris) in Brazil: A historical and spatial perspectiveZucoloto, Rodrigo BarbanCafezeiro Bomfim, Gilbertode Campos Fernandes, Flora MariaSelbach Schnadelbach, AlessandraPiña, Carlos IgnacioVerdade, Luciano MartinsALLIGATORIDAECONSERVATION GENETICSMOLECULAR ECOLOGYMOLECULAR MARKERShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Caiman latirostris has a large geographic distribution, that includes Argentina, Bolivia, Brazil, Paraguay, and Uruguay. In Brazil illegal hunting and land use change have caused population decline, relatively well documented in the last three decades. Due to such circumstances, the estimate of species effective population size might help analyze its viability. Single-sample estimator was used to estimate current effective population size (Ne) of broad-snouted caiman populations in representative areas of the species range in Brazil. For the analyzes, genotypes previously obtained were used for subpopulations of the captive colony of the University of São Paulo (USP) and for wild subpopulations. The microsatellites used were Amiμ8, Amiμ11, Amiμ13, Amiμ20, Claμ2, Claμ5, Claμ6, Claμ7, Claμ8, Claμ9 and Claμ10. The 11 loci analyzed produced 18.27 alleles on average. Wild populations showed significant genic and genotypic differentiation among them (p < 0.01). Population structure analyses (Rho-statistics) at Genepop for all loci was 0.376. The effective number of population sizes (Ɵ, the Ne estimator of Migrate-n software) of Caiman latirostris populations from the captive colony at the USP was 117.1 (N = 7) for NRF, 115.2 (N = 4) for Fm1, and 107.5 (N = 4) for Fm5, on the oposite side, the mean value of theta (Ɵ) was 7.7 (N = 51) for the Atlantic SE basin wild population, 9.4 (N = 42) for the Atlantic N/NE basin wild population and 9.6 (N = 91) for the Paraná basin wild population. The mean number of migrants (M of Migrate-n software) varied from 1.7 to 1.9 estimated by migrate-n are comparable to 1.3 estimated by Genepop. It is observed that in most wild population only few adults effectively contribute to genetic variation. The following guidlines are proposed as management actions: (1) an update of population sampling; (2) redefinition, delimitation and conservation of natural habitats; and (3) new conservation genetic studies with special attention to genetic diversity recovery.Fil: Zucoloto, Rodrigo Barban. Universidade Federal da Bahia; BrasilFil: Cafezeiro Bomfim, Gilberto. Universidade Federal da Bahia; BrasilFil: de Campos Fernandes, Flora Maria. Universidade Federal da Bahia; BrasilFil: Selbach Schnadelbach, Alessandra. Universidade Federal da Bahia; BrasilFil: Piña, Carlos Ignacio. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; ArgentinaFil: Verdade, Luciano Martins. Universidade de Sao Paulo; BrasilElsevier2021-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/164589Zucoloto, Rodrigo Barban; Cafezeiro Bomfim, Gilberto; de Campos Fernandes, Flora Maria; Selbach Schnadelbach, Alessandra; Piña, Carlos Ignacio; et al.; Effective population size of broad-snouted caiman (Caiman latirostris) in Brazil: A historical and spatial perspective; Elsevier; Global Ecology and Conservation; 28; 8-2021; 1-112351-9894CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S2351989421002237info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gecco.2021.e01673info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:50:00Zoai:ri.conicet.gov.ar:11336/164589instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:50:00.779CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effective population size of broad-snouted caiman (Caiman latirostris) in Brazil: A historical and spatial perspective
title Effective population size of broad-snouted caiman (Caiman latirostris) in Brazil: A historical and spatial perspective
spellingShingle Effective population size of broad-snouted caiman (Caiman latirostris) in Brazil: A historical and spatial perspective
Zucoloto, Rodrigo Barban
ALLIGATORIDAE
CONSERVATION GENETICS
MOLECULAR ECOLOGY
MOLECULAR MARKERS
title_short Effective population size of broad-snouted caiman (Caiman latirostris) in Brazil: A historical and spatial perspective
title_full Effective population size of broad-snouted caiman (Caiman latirostris) in Brazil: A historical and spatial perspective
title_fullStr Effective population size of broad-snouted caiman (Caiman latirostris) in Brazil: A historical and spatial perspective
title_full_unstemmed Effective population size of broad-snouted caiman (Caiman latirostris) in Brazil: A historical and spatial perspective
title_sort Effective population size of broad-snouted caiman (Caiman latirostris) in Brazil: A historical and spatial perspective
dc.creator.none.fl_str_mv Zucoloto, Rodrigo Barban
Cafezeiro Bomfim, Gilberto
de Campos Fernandes, Flora Maria
Selbach Schnadelbach, Alessandra
Piña, Carlos Ignacio
Verdade, Luciano Martins
author Zucoloto, Rodrigo Barban
author_facet Zucoloto, Rodrigo Barban
Cafezeiro Bomfim, Gilberto
de Campos Fernandes, Flora Maria
Selbach Schnadelbach, Alessandra
Piña, Carlos Ignacio
Verdade, Luciano Martins
author_role author
author2 Cafezeiro Bomfim, Gilberto
de Campos Fernandes, Flora Maria
Selbach Schnadelbach, Alessandra
Piña, Carlos Ignacio
Verdade, Luciano Martins
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv ALLIGATORIDAE
CONSERVATION GENETICS
MOLECULAR ECOLOGY
MOLECULAR MARKERS
topic ALLIGATORIDAE
CONSERVATION GENETICS
MOLECULAR ECOLOGY
MOLECULAR MARKERS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Caiman latirostris has a large geographic distribution, that includes Argentina, Bolivia, Brazil, Paraguay, and Uruguay. In Brazil illegal hunting and land use change have caused population decline, relatively well documented in the last three decades. Due to such circumstances, the estimate of species effective population size might help analyze its viability. Single-sample estimator was used to estimate current effective population size (Ne) of broad-snouted caiman populations in representative areas of the species range in Brazil. For the analyzes, genotypes previously obtained were used for subpopulations of the captive colony of the University of São Paulo (USP) and for wild subpopulations. The microsatellites used were Amiμ8, Amiμ11, Amiμ13, Amiμ20, Claμ2, Claμ5, Claμ6, Claμ7, Claμ8, Claμ9 and Claμ10. The 11 loci analyzed produced 18.27 alleles on average. Wild populations showed significant genic and genotypic differentiation among them (p < 0.01). Population structure analyses (Rho-statistics) at Genepop for all loci was 0.376. The effective number of population sizes (Ɵ, the Ne estimator of Migrate-n software) of Caiman latirostris populations from the captive colony at the USP was 117.1 (N = 7) for NRF, 115.2 (N = 4) for Fm1, and 107.5 (N = 4) for Fm5, on the oposite side, the mean value of theta (Ɵ) was 7.7 (N = 51) for the Atlantic SE basin wild population, 9.4 (N = 42) for the Atlantic N/NE basin wild population and 9.6 (N = 91) for the Paraná basin wild population. The mean number of migrants (M of Migrate-n software) varied from 1.7 to 1.9 estimated by migrate-n are comparable to 1.3 estimated by Genepop. It is observed that in most wild population only few adults effectively contribute to genetic variation. The following guidlines are proposed as management actions: (1) an update of population sampling; (2) redefinition, delimitation and conservation of natural habitats; and (3) new conservation genetic studies with special attention to genetic diversity recovery.
Fil: Zucoloto, Rodrigo Barban. Universidade Federal da Bahia; Brasil
Fil: Cafezeiro Bomfim, Gilberto. Universidade Federal da Bahia; Brasil
Fil: de Campos Fernandes, Flora Maria. Universidade Federal da Bahia; Brasil
Fil: Selbach Schnadelbach, Alessandra. Universidade Federal da Bahia; Brasil
Fil: Piña, Carlos Ignacio. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina
Fil: Verdade, Luciano Martins. Universidade de Sao Paulo; Brasil
description Caiman latirostris has a large geographic distribution, that includes Argentina, Bolivia, Brazil, Paraguay, and Uruguay. In Brazil illegal hunting and land use change have caused population decline, relatively well documented in the last three decades. Due to such circumstances, the estimate of species effective population size might help analyze its viability. Single-sample estimator was used to estimate current effective population size (Ne) of broad-snouted caiman populations in representative areas of the species range in Brazil. For the analyzes, genotypes previously obtained were used for subpopulations of the captive colony of the University of São Paulo (USP) and for wild subpopulations. The microsatellites used were Amiμ8, Amiμ11, Amiμ13, Amiμ20, Claμ2, Claμ5, Claμ6, Claμ7, Claμ8, Claμ9 and Claμ10. The 11 loci analyzed produced 18.27 alleles on average. Wild populations showed significant genic and genotypic differentiation among them (p < 0.01). Population structure analyses (Rho-statistics) at Genepop for all loci was 0.376. The effective number of population sizes (Ɵ, the Ne estimator of Migrate-n software) of Caiman latirostris populations from the captive colony at the USP was 117.1 (N = 7) for NRF, 115.2 (N = 4) for Fm1, and 107.5 (N = 4) for Fm5, on the oposite side, the mean value of theta (Ɵ) was 7.7 (N = 51) for the Atlantic SE basin wild population, 9.4 (N = 42) for the Atlantic N/NE basin wild population and 9.6 (N = 91) for the Paraná basin wild population. The mean number of migrants (M of Migrate-n software) varied from 1.7 to 1.9 estimated by migrate-n are comparable to 1.3 estimated by Genepop. It is observed that in most wild population only few adults effectively contribute to genetic variation. The following guidlines are proposed as management actions: (1) an update of population sampling; (2) redefinition, delimitation and conservation of natural habitats; and (3) new conservation genetic studies with special attention to genetic diversity recovery.
publishDate 2021
dc.date.none.fl_str_mv 2021-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/164589
Zucoloto, Rodrigo Barban; Cafezeiro Bomfim, Gilberto; de Campos Fernandes, Flora Maria; Selbach Schnadelbach, Alessandra; Piña, Carlos Ignacio; et al.; Effective population size of broad-snouted caiman (Caiman latirostris) in Brazil: A historical and spatial perspective; Elsevier; Global Ecology and Conservation; 28; 8-2021; 1-11
2351-9894
CONICET Digital
CONICET
url http://hdl.handle.net/11336/164589
identifier_str_mv Zucoloto, Rodrigo Barban; Cafezeiro Bomfim, Gilberto; de Campos Fernandes, Flora Maria; Selbach Schnadelbach, Alessandra; Piña, Carlos Ignacio; et al.; Effective population size of broad-snouted caiman (Caiman latirostris) in Brazil: A historical and spatial perspective; Elsevier; Global Ecology and Conservation; 28; 8-2021; 1-11
2351-9894
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S2351989421002237
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gecco.2021.e01673
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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