Livistona palms in Australia: Ancient relics or opportunistic immigrants?

Crisp, Michael D., Isagi, Yuji, Kato, Yohei, Cook, Lyn and Bownam, David M. (2010) Livistona palms in Australia: Ancient relics or opportunistic immigrants?. Molecular Phylogenetics and Evolution, 54 2: 512-523. doi:10.1016/j.ympev.2009.09.020


Author Crisp, Michael D.
Isagi, Yuji
Kato, Yohei
Cook, Lyn
Bownam, David M.
Title Livistona palms in Australia: Ancient relics or opportunistic immigrants?
Formatted title
Livistona palms in Australia: Ancient relics or opportunistic immigrants?
Journal name Molecular Phylogenetics and Evolution   Check publisher's open access policy
ISSN 1055-7903
1095-9513
Publication date 2010-02
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.ympev.2009.09.020
Volume 54
Issue 2
Start page 512
End page 523
Total pages 12
Place of publication Maryland Heights, MO, United States
Publisher Academic Press
Collection year 2011
Language eng
Formatted abstract
Eighteen of the 34 species of the fan palm genus Livistona (Arecaceae) are restricted to Australia and southern New Guinea, east of Wallace's Line, an ancient biogeographic boundary between the former supercontinents Laurasia and Gondwana. The remaining species extend from SE Asia to Africa, west of Wallace's Line. Competing hypotheses contend that Livistona is (a) ancient, its current distribution a relict of the supercontinents, or (b) a Miocene immigrant from the north into Australia as it drifted towards Asia. We have tested these hypotheses using Bayesian and penalized likelihood molecular dating based on 4 Kb of nuclear and chloroplast DNA sequences with multiple fossil calibration points. Ancestral areas and biomes were reconstructed using parsimony and maximum likelihood. We found strong support for the second hypothesis, that a single Livistona ancestor colonized Australia from the north about 10-17 Ma. Spread and diversification of the genus within Australia was likely favoured by a transition from the aseasonal wet to monsoonal biome, to which it could have been preadapted by fire-tolerance. © 2009 Elsevier Inc. All rights reserved.
Keyword Biogeography
Ecological transitions
Bayesian phylogenetics
Parsimony
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 17 September 2009

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Biological Sciences Publications
 
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Created: Thu, 17 Dec 2009, 10:18:32 EST by Hayley Ware on behalf of School of Biological Sciences