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Hauptverfasser:	Thaís Leal, Ana Lúcia Cypriano‐Souza, Paulo C. Simões‐Lopes, Sandro L. Bonatto, Jeremy J. Kiszka, Ruth Y. Ewing, Adam Lache, Maria C. Cartolano, Ana P. B. Costa
Format:	Artículo Open Access
Veröffentlicht:	Wiley 2025
Schlagworte:	Marine Mammal Science
Online-Zugang:	https://onlinelibrary.wiley.com/doi/10.1111/mms.70021
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author	Thaís Leal Ana Lúcia Cypriano‐Souza Paulo C. Simões‐Lopes Sandro L. Bonatto Jeremy J. Kiszka Ruth Y. Ewing Adam Lache Maria C. Cartolano Ana P. B. Costa
author_facet	Thaís Leal Ana Lúcia Cypriano‐Souza Paulo C. Simões‐Lopes Sandro L. Bonatto Jeremy J. Kiszka Ruth Y. Ewing Adam Lache Maria C. Cartolano Ana P. B. Costa Thaís Leal Ana Lúcia Cypriano‐Souza Paulo C. Simões‐Lopes Sandro L. Bonatto Jeremy J. Kiszka Ruth Y. Ewing Adam Lache Maria C. Cartolano Ana P. B. Costa
collection	Wiley Open Access
contents	Genetic Assessment of the Spinner Dolphin ( Stenella longirostris ) in the Largest Offshore Sedimentary Basin in Brazil Thaís Leal Ana Lúcia Cypriano‐Souza Paulo C. Simões‐Lopes Sandro L. Bonatto Jeremy J. Kiszka Ruth Y. Ewing Adam Lache Maria C. Cartolano Ana P. B. Costa Marine Mammal Science ABSTRACT Assessing the genetic diversity of a population is critical to evaluate its resilience in the face of anthropogenic impacts. This study aimed to assess the genetic diversity and structure of the spinner dolphins ( Stenella longirostris ) that inhabit the Santos Basin (SB), south and southeast Brazil. Analyses were conducted using seven microsatellite loci and a 686 bp fragment of the mitochondrial DNA (mtDNA) control region. The genetic relationship between SB spinner dolphins with the island‐associated spinner dolphins of Fernando de Noronha and spinner dolphins distributed in the western North Atlantic, including the Wider Caribbean region, was also investigated through a 324 bp fragment of the mtDNA control region. Results indicate that the offshore group of spinner dolphins in the SB has high genetic diversity for both mtDNA and nuclear markers. Based on mtDNA, the SB group has moderate genetic connectivity to the western North Atlantic/Wider Caribbean region spinner dolphins, but high genetic differentiation from their closest neighbors (Fernando de Noronha). These findings indicate that although SB spinner dolphins occur in an area of strong anthropogenic impacts, they present a high level of neutral genetic variation, with subtle matrilineally derived structure in the offshore (not island‐associated) waters of the western Atlantic. 10.1111/mms.70021 http://creativecommons.org/licenses/by-nc-nd/4.0/
doi_str_mv	10.1111/mms.70021
format	Artículo Open Access
id	wiley_oa_10_1111_mms_70021
institution	Wiley Open Access
license_str_mv	http://creativecommons.org/licenses/by-nc-nd/4.0/
publishDate	2025
publisher	Wiley
record_format	wiley_oa
spellingShingle	Genetic Assessment of the Spinner Dolphin ( Stenella longirostris ) in the Largest Offshore Sedimentary Basin in Brazil Thaís Leal Ana Lúcia Cypriano‐Souza Paulo C. Simões‐Lopes Sandro L. Bonatto Jeremy J. Kiszka Ruth Y. Ewing Adam Lache Maria C. Cartolano Ana P. B. Costa Marine Mammal Science Genetic Assessment of the Spinner Dolphin ( Stenella longirostris ) in the Largest Offshore Sedimentary Basin in Brazil Thaís Leal Ana Lúcia Cypriano‐Souza Paulo C. Simões‐Lopes Sandro L. Bonatto Jeremy J. Kiszka Ruth Y. Ewing Adam Lache Maria C. Cartolano Ana P. B. Costa Marine Mammal Science ABSTRACT Assessing the genetic diversity of a population is critical to evaluate its resilience in the face of anthropogenic impacts. This study aimed to assess the genetic diversity and structure of the spinner dolphins ( Stenella longirostris ) that inhabit the Santos Basin (SB), south and southeast Brazil. Analyses were conducted using seven microsatellite loci and a 686 bp fragment of the mitochondrial DNA (mtDNA) control region. The genetic relationship between SB spinner dolphins with the island‐associated spinner dolphins of Fernando de Noronha and spinner dolphins distributed in the western North Atlantic, including the Wider Caribbean region, was also investigated through a 324 bp fragment of the mtDNA control region. Results indicate that the offshore group of spinner dolphins in the SB has high genetic diversity for both mtDNA and nuclear markers. Based on mtDNA, the SB group has moderate genetic connectivity to the western North Atlantic/Wider Caribbean region spinner dolphins, but high genetic differentiation from their closest neighbors (Fernando de Noronha). These findings indicate that although SB spinner dolphins occur in an area of strong anthropogenic impacts, they present a high level of neutral genetic variation, with subtle matrilineally derived structure in the offshore (not island‐associated) waters of the western Atlantic. 10.1111/mms.70021 http://creativecommons.org/licenses/by-nc-nd/4.0/
title	Genetic Assessment of the Spinner Dolphin ( Stenella longirostris ) in the Largest Offshore Sedimentary Basin in Brazil
topic	Marine Mammal Science
url	https://onlinelibrary.wiley.com/doi/10.1111/mms.70021

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