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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/164589
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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 Técnicas2025-09-03T09:52:22Zoai: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:34982025-09-03 09:52:22.703CONICET 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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1842269154391883776 |
score |
13.13397 |