New Genetic and Linguistic Analyses Show Ancient Human Influence on Baobab Evolution and Distribution in Australia

Détails

Ressource 1Télécharger: BIB_B4C6CD1089DD.P001.pdf (1665.22 [Ko])
Etat: Public
Version: Final published version
ID Serval
serval:BIB_B4C6CD1089DD
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
New Genetic and Linguistic Analyses Show Ancient Human Influence on Baobab Evolution and Distribution in Australia
Périodique
PLOS ONE
Auteur(s)
Rangan H., Bell K. L., Baum D. A., Fowler R., McConvell P., Saunders Th., Spronck S., Kull Ch. A. , Murphy D. J.
ISSN-L
1932-6203
Statut éditorial
Publié
Date de publication
2015
Peer-reviewed
Oui
Volume
10
Numéro
4
Pages
e0119758
Langue
anglais
Résumé
This study investigates the role of human agency in the gene flow and geographical distribution of the Australian baobab, Adansonia gregorii. The genus Adansonia is a charismatic tree endemic to Africa, Madagascar, and northwest Australia that has long been valued by humans for its multiple uses. The distribution of genetic variation in baobabs in Africa has been partially attributed to human-mediated dispersal over millennia, but this relationship has never been investigated for the Australian species. We combined genetic and linguistic data to analyse geographic patterns of gene flow and movement of word-forms for A. gregorii in the Aboriginal languages of northwest Australia. Comprehensive assessment of genetic diversity showed weak geographic structure and high gene flow. Of potential dispersal vectors, humans were identified as most likely to have enabled gene flow across biogeographic barriers in northwest Australia. Genetic-linguistic analysis demonstrated congruence of gene flow patterns and directional movement of Aboriginal loanwords for A. gregorii. These findings, along with previous archaeobotanical evidence from the Late Pleistocene and Holocene, suggest that ancient humans significantly influenced the geographic distribution of Adansonia in northwest Australia.
Open Access
Oui
Création de la notice
02/04/2015 13:12
Dernière modification de la notice
20/08/2019 15:23
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