The Intercontinental phylogeography of neustonic daphniids

Abstract Organisms that live at the freshwater surface layer (the neuston) occupy a high energy habitat that is threatened by human activities. Daphniids of the genera Scapholeberis and Megafenestra are adapted to the neuston but are poorly studied for biogeography and diversity. Here we assess the...

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Autores principales:	Derek J. Taylor, Sandra J. Connelly, Alexey A. Kotov
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7073e050a85a4978af626e6a3f155ad8
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spelling	oai:doaj.org-article:7073e050a85a4978af626e6a3f155ad82021-12-02T14:06:58ZThe Intercontinental phylogeography of neustonic daphniids10.1038/s41598-020-58743-82045-2322https://doaj.org/article/7073e050a85a4978af626e6a3f155ad82020-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-58743-8https://doaj.org/toc/2045-2322Abstract Organisms that live at the freshwater surface layer (the neuston) occupy a high energy habitat that is threatened by human activities. Daphniids of the genera Scapholeberis and Megafenestra are adapted to the neuston but are poorly studied for biogeography and diversity. Here we assess the global phylogeography of neustonic daphniids. We obtained 402 new multigene sequences from the 12S rRNA, 16S rRNA, and tRNA (val) regions of the mitochondrial genomes of daphniids from 186 global sites. We assessed the intercontinental origins and boundaries of mitochondrial lineages and the relative rates of evolution in neustonic and planktonic daphniids. We identified 17 divergent lineages in the neustonic daphniids that were associated with biogeographic regions. Six of these lineages had intercontinental ranges – four of these were Transberingian. Patagonian populations of Scapholeberis rammneri were monophyletic and nested within a closely related clade of western North American haplotypes, suggesting an introduction from the Western Nearctic to South America. The Eastern Palearctic was more diverse than other regions, containing eight of the major lineages detected in the Scapholeberinae. The Genus Scapholeberis had high levels of divergence compared to non-neustonic daphniids. Neustonic daphniids have more divergent biogeographic lineages than previously appreciated.Derek J. TaylorSandra J. ConnellyAlexey A. KotovNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-12 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Derek J. Taylor Sandra J. Connelly Alexey A. Kotov The Intercontinental phylogeography of neustonic daphniids
description	Abstract Organisms that live at the freshwater surface layer (the neuston) occupy a high energy habitat that is threatened by human activities. Daphniids of the genera Scapholeberis and Megafenestra are adapted to the neuston but are poorly studied for biogeography and diversity. Here we assess the global phylogeography of neustonic daphniids. We obtained 402 new multigene sequences from the 12S rRNA, 16S rRNA, and tRNA (val) regions of the mitochondrial genomes of daphniids from 186 global sites. We assessed the intercontinental origins and boundaries of mitochondrial lineages and the relative rates of evolution in neustonic and planktonic daphniids. We identified 17 divergent lineages in the neustonic daphniids that were associated with biogeographic regions. Six of these lineages had intercontinental ranges – four of these were Transberingian. Patagonian populations of Scapholeberis rammneri were monophyletic and nested within a closely related clade of western North American haplotypes, suggesting an introduction from the Western Nearctic to South America. The Eastern Palearctic was more diverse than other regions, containing eight of the major lineages detected in the Scapholeberinae. The Genus Scapholeberis had high levels of divergence compared to non-neustonic daphniids. Neustonic daphniids have more divergent biogeographic lineages than previously appreciated.
format	article
author	Derek J. Taylor Sandra J. Connelly Alexey A. Kotov
author_facet	Derek J. Taylor Sandra J. Connelly Alexey A. Kotov
author_sort	Derek J. Taylor
title	The Intercontinental phylogeography of neustonic daphniids
title_short	The Intercontinental phylogeography of neustonic daphniids
title_full	The Intercontinental phylogeography of neustonic daphniids
title_fullStr	The Intercontinental phylogeography of neustonic daphniids
title_full_unstemmed	The Intercontinental phylogeography of neustonic daphniids
title_sort	intercontinental phylogeography of neustonic daphniids
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/7073e050a85a4978af626e6a3f155ad8
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The Intercontinental phylogeography of neustonic daphniids

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