Transcontinental Phylogeography of the Daphnia pulex Species Complex

Daphnia pulex is quickly becoming an attractive model species in the field of ecological genomics due to the recent release of its complete genome sequence, a wide variety of new genomic resources, and a rich history of ecological data. Sequences of the mitochondrial NADH dehydrogenase subunit 5 an...

Full description

Bibliographic Details
Main Authors:	Crease, Teresa J., Omilian, Angela R., Costanzo, Katie S., Taylor, Derek J.
Format:	Online
Language:	English
Published:	Public Library of Science 2012
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463573/

id	pubmed-3463573
recordtype	oai_dc
spelling	pubmed-34635732012-10-09 Transcontinental Phylogeography of the Daphnia pulex Species Complex Crease, Teresa J. Omilian, Angela R. Costanzo, Katie S. Taylor, Derek J. Research Article Daphnia pulex is quickly becoming an attractive model species in the field of ecological genomics due to the recent release of its complete genome sequence, a wide variety of new genomic resources, and a rich history of ecological data. Sequences of the mitochondrial NADH dehydrogenase subunit 5 and cytochrome c oxidase subunit 1 genes were used to assess the global phylogeography of this species, and to further elucidate its phylogenetic relationship to other members of the Daphnia pulex species complex. Using both newly acquired and previously published data, we analyzed 398 individuals from collections spanning five continents. Eleven strongly supported lineages were found within the D. pulex complex, and one lineage in particular, panarctic D. pulex, has very little phylogeographical structure and a near worldwide distribution. Mismatch distribution, haplotype network, and population genetic analyses are compatible with a North American origin for this lineage and subsequent spatial expansion in the Late Pleistocene. In addition, our analyses suggest that dispersal between North and South America of this and other species in the D. pulex complex has occurred multiple times, and is predominantly from north to south. Our results provide additional support for the evolutionary relationships of the eleven main mitochondrial lineages of the D. pulex complex. We found that the well-studied panarctic D. pulex is present on every continent except Australia and Antarctica. Despite being geographically very widespread, there is a lack of strong regionalism in the mitochondrial genomes of panarctic D. pulex – a pattern that differs from that of most studied cladocerans. Moreover, our analyses suggest recent expansion of the panarctic D. pulex lineage, with some continents sharing haplotypes. The hypothesis that hybrid asexuality has contributed to the recent and unusual geographic success of the panarctic D. pulex lineage warrants further study. Public Library of Science 2012-10-03 /pmc/articles/PMC3463573/ /pubmed/23056371 http://dx.doi.org/10.1371/journal.pone.0046620 Text en © 2012 Crease et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Crease, Teresa J. Omilian, Angela R. Costanzo, Katie S. Taylor, Derek J.
spellingShingle	Crease, Teresa J. Omilian, Angela R. Costanzo, Katie S. Taylor, Derek J. Transcontinental Phylogeography of the Daphnia pulex Species Complex
author_facet	Crease, Teresa J. Omilian, Angela R. Costanzo, Katie S. Taylor, Derek J.
author_sort	Crease, Teresa J.
title	Transcontinental Phylogeography of the Daphnia pulex Species Complex
title_short	Transcontinental Phylogeography of the Daphnia pulex Species Complex
title_full	Transcontinental Phylogeography of the Daphnia pulex Species Complex
title_fullStr	Transcontinental Phylogeography of the Daphnia pulex Species Complex
title_full_unstemmed	Transcontinental Phylogeography of the Daphnia pulex Species Complex
title_sort	transcontinental phylogeography of the daphnia pulex species complex
description	Daphnia pulex is quickly becoming an attractive model species in the field of ecological genomics due to the recent release of its complete genome sequence, a wide variety of new genomic resources, and a rich history of ecological data. Sequences of the mitochondrial NADH dehydrogenase subunit 5 and cytochrome c oxidase subunit 1 genes were used to assess the global phylogeography of this species, and to further elucidate its phylogenetic relationship to other members of the Daphnia pulex species complex. Using both newly acquired and previously published data, we analyzed 398 individuals from collections spanning five continents. Eleven strongly supported lineages were found within the D. pulex complex, and one lineage in particular, panarctic D. pulex, has very little phylogeographical structure and a near worldwide distribution. Mismatch distribution, haplotype network, and population genetic analyses are compatible with a North American origin for this lineage and subsequent spatial expansion in the Late Pleistocene. In addition, our analyses suggest that dispersal between North and South America of this and other species in the D. pulex complex has occurred multiple times, and is predominantly from north to south. Our results provide additional support for the evolutionary relationships of the eleven main mitochondrial lineages of the D. pulex complex. We found that the well-studied panarctic D. pulex is present on every continent except Australia and Antarctica. Despite being geographically very widespread, there is a lack of strong regionalism in the mitochondrial genomes of panarctic D. pulex – a pattern that differs from that of most studied cladocerans. Moreover, our analyses suggest recent expansion of the panarctic D. pulex lineage, with some continents sharing haplotypes. The hypothesis that hybrid asexuality has contributed to the recent and unusual geographic success of the panarctic D. pulex lineage warrants further study.
publisher	Public Library of Science
publishDate	2012
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463573/
_version_	1611913531773419520

Transcontinental Phylogeography of the Daphnia pulex Species Complex

Similar Items