Molecular genetic evidence for the place of origin of the Pacific rat, Rattus exulans.

Commensal plants and animals have long been used to track human migrations, with Rattus exulans (the Pacific rat) a common organism for reconstructing Polynesian dispersal in the Pacific. However, with no knowledge of the homeland of R. exulans, the place of origin of this human-commensal relationsh...

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Autores principales:	Vicki Thomson, Ken P Aplin, Alan Cooper, Susan Hisheh, Hitoshi Suzuki, Ibnu Maryanto, Grace Yap, Stephen C Donnellan
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/06aaa0d9287a4139a430b03b9ea88660
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spelling	oai:doaj.org-article:06aaa0d9287a4139a430b03b9ea886602021-11-18T08:27:44ZMolecular genetic evidence for the place of origin of the Pacific rat, Rattus exulans.1932-620310.1371/journal.pone.0091356https://doaj.org/article/06aaa0d9287a4139a430b03b9ea886602014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24637896/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Commensal plants and animals have long been used to track human migrations, with Rattus exulans (the Pacific rat) a common organism for reconstructing Polynesian dispersal in the Pacific. However, with no knowledge of the homeland of R. exulans, the place of origin of this human-commensal relationship is unknown. We conducted a mitochondrial DNA phylogeographic survey of R. exulans diversity across the potential natural range in mainland and Island Southeast Asia in order to establish the origin of this human-commensal dyad. We also conducted allozyme electrophoresis on samples from ISEA to obtain a perspective on patterns of genetic diversity in this critical region. Finally, we compared molecular genetic evidence with knowledge of prehistoric rodent faunas in mainland and ISEA. We find that ISEA populations of R. exulans contain the highest mtDNA lineage diversity including significant haplotype diversity not represented elsewhere in the species range. Within ISEA, the island of Flores in the Lesser Sunda group contains the highest diversity in ISEA (across all loci) and also has a deep fossil record of small mammals that appears to include R. exulans. Therefore, in addition to Flores harboring unusual diversity in the form of Homo floresiensis, dwarfed stegodons and giant rats, this island appears to be the homeland of R. exulans.Vicki ThomsonKen P AplinAlan CooperSusan HishehHitoshi SuzukiIbnu MaryantoGrace YapStephen C DonnellanPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 3, p e91356 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Vicki Thomson Ken P Aplin Alan Cooper Susan Hisheh Hitoshi Suzuki Ibnu Maryanto Grace Yap Stephen C Donnellan Molecular genetic evidence for the place of origin of the Pacific rat, Rattus exulans.
description	Commensal plants and animals have long been used to track human migrations, with Rattus exulans (the Pacific rat) a common organism for reconstructing Polynesian dispersal in the Pacific. However, with no knowledge of the homeland of R. exulans, the place of origin of this human-commensal relationship is unknown. We conducted a mitochondrial DNA phylogeographic survey of R. exulans diversity across the potential natural range in mainland and Island Southeast Asia in order to establish the origin of this human-commensal dyad. We also conducted allozyme electrophoresis on samples from ISEA to obtain a perspective on patterns of genetic diversity in this critical region. Finally, we compared molecular genetic evidence with knowledge of prehistoric rodent faunas in mainland and ISEA. We find that ISEA populations of R. exulans contain the highest mtDNA lineage diversity including significant haplotype diversity not represented elsewhere in the species range. Within ISEA, the island of Flores in the Lesser Sunda group contains the highest diversity in ISEA (across all loci) and also has a deep fossil record of small mammals that appears to include R. exulans. Therefore, in addition to Flores harboring unusual diversity in the form of Homo floresiensis, dwarfed stegodons and giant rats, this island appears to be the homeland of R. exulans.
format	article
author	Vicki Thomson Ken P Aplin Alan Cooper Susan Hisheh Hitoshi Suzuki Ibnu Maryanto Grace Yap Stephen C Donnellan
author_facet	Vicki Thomson Ken P Aplin Alan Cooper Susan Hisheh Hitoshi Suzuki Ibnu Maryanto Grace Yap Stephen C Donnellan
author_sort	Vicki Thomson
title	Molecular genetic evidence for the place of origin of the Pacific rat, Rattus exulans.
title_short	Molecular genetic evidence for the place of origin of the Pacific rat, Rattus exulans.
title_full	Molecular genetic evidence for the place of origin of the Pacific rat, Rattus exulans.
title_fullStr	Molecular genetic evidence for the place of origin of the Pacific rat, Rattus exulans.
title_full_unstemmed	Molecular genetic evidence for the place of origin of the Pacific rat, Rattus exulans.
title_sort	molecular genetic evidence for the place of origin of the pacific rat, rattus exulans.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/06aaa0d9287a4139a430b03b9ea88660
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Molecular genetic evidence for the place of origin of the Pacific rat, Rattus exulans.

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