Wandering behaviour prevents inter and intra oceanic speciation in a coastal pelagic fish

Abstract Small pelagic fishes have the ability to disperse over long distances and may present complex evolutionary histories. Here, Old World Anchovies (OWA) were used as a model system to understand genetic patterns and connectivity of fish between the Atlantic and Pacific basins. We surveyed 16 l...

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Autores principales:	Gonçalo Silva, Regina L. Cunha, Ana Ramos, Rita Castilho
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5a4af6b339254af89db7db8cd3f59aab
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spelling	oai:doaj.org-article:5a4af6b339254af89db7db8cd3f59aab2021-12-02T16:06:51ZWandering behaviour prevents inter and intra oceanic speciation in a coastal pelagic fish10.1038/s41598-017-02945-02045-2322https://doaj.org/article/5a4af6b339254af89db7db8cd3f59aab2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02945-0https://doaj.org/toc/2045-2322Abstract Small pelagic fishes have the ability to disperse over long distances and may present complex evolutionary histories. Here, Old World Anchovies (OWA) were used as a model system to understand genetic patterns and connectivity of fish between the Atlantic and Pacific basins. We surveyed 16 locations worldwide using mtDNA and 8 microsatellite loci for genetic parameters, and mtDNA (cyt b; 16S) and nuclear (RAG1; RAG2) regions for dating major lineage-splitting events within Engraulidae family. The OWA genetic divergences (0–0.4%) are compatible with intra-specific divergence, showing evidence of both ancient and contemporary admixture between the Pacific and Atlantic populations, enhanced by high asymmetrical migration from the Pacific to the Atlantic. The estimated divergence between Atlantic and Pacific anchovies (0.67 [0.53–0.80] Ma) matches a severe drop of sea temperature during the Günz glacial stage of the Pleistocene. Our results support an alternative evolutionary scenario for the OWA, suggesting a coastal migration along south Asia, Middle East and eastern Africa continental platforms, followed by the colonization of the Atlantic via the Cape of the Good Hope.Gonçalo SilvaRegina L. CunhaAna RamosRita CastilhoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Gonçalo Silva Regina L. Cunha Ana Ramos Rita Castilho Wandering behaviour prevents inter and intra oceanic speciation in a coastal pelagic fish
description	Abstract Small pelagic fishes have the ability to disperse over long distances and may present complex evolutionary histories. Here, Old World Anchovies (OWA) were used as a model system to understand genetic patterns and connectivity of fish between the Atlantic and Pacific basins. We surveyed 16 locations worldwide using mtDNA and 8 microsatellite loci for genetic parameters, and mtDNA (cyt b; 16S) and nuclear (RAG1; RAG2) regions for dating major lineage-splitting events within Engraulidae family. The OWA genetic divergences (0–0.4%) are compatible with intra-specific divergence, showing evidence of both ancient and contemporary admixture between the Pacific and Atlantic populations, enhanced by high asymmetrical migration from the Pacific to the Atlantic. The estimated divergence between Atlantic and Pacific anchovies (0.67 [0.53–0.80] Ma) matches a severe drop of sea temperature during the Günz glacial stage of the Pleistocene. Our results support an alternative evolutionary scenario for the OWA, suggesting a coastal migration along south Asia, Middle East and eastern Africa continental platforms, followed by the colonization of the Atlantic via the Cape of the Good Hope.
format	article
author	Gonçalo Silva Regina L. Cunha Ana Ramos Rita Castilho
author_facet	Gonçalo Silva Regina L. Cunha Ana Ramos Rita Castilho
author_sort	Gonçalo Silva
title	Wandering behaviour prevents inter and intra oceanic speciation in a coastal pelagic fish
title_short	Wandering behaviour prevents inter and intra oceanic speciation in a coastal pelagic fish
title_full	Wandering behaviour prevents inter and intra oceanic speciation in a coastal pelagic fish
title_fullStr	Wandering behaviour prevents inter and intra oceanic speciation in a coastal pelagic fish
title_full_unstemmed	Wandering behaviour prevents inter and intra oceanic speciation in a coastal pelagic fish
title_sort	wandering behaviour prevents inter and intra oceanic speciation in a coastal pelagic fish
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/5a4af6b339254af89db7db8cd3f59aab
work_keys_str_mv	AT goncalosilva wanderingbehaviourpreventsinterandintraoceanicspeciationinacoastalpelagicfish AT reginalcunha wanderingbehaviourpreventsinterandintraoceanicspeciationinacoastalpelagicfish AT anaramos wanderingbehaviourpreventsinterandintraoceanicspeciationinacoastalpelagicfish AT ritacastilho wanderingbehaviourpreventsinterandintraoceanicspeciationinacoastalpelagicfish
_version_	1718384841813131264

Wandering behaviour prevents inter and intra oceanic speciation in a coastal pelagic fish

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