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Phylogeography of an Australian termite, Amitermes laurensis (Isoptera, Termitidae), with special reference to the variety of mound shapes

Ozeki, M., Isagi, Y., Tsubota, H., Jacklyn, Peter and Bowman, David M. J. S. (2007). Phylogeography of an Australian termite, Amitermes laurensis (Isoptera, Termitidae), with special reference to the variety of mound shapes. Molecular Phylogenetics and Evolution,42(1):236-247.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 14 times in Scopus Article | Citations

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IRMA ID 73203693xPUB1
Title Phylogeography of an Australian termite, Amitermes laurensis (Isoptera, Termitidae), with special reference to the variety of mound shapes
Author Ozeki, M.
Isagi, Y.
Tsubota, H.
Jacklyn, Peter
Bowman, David M. J. S.
Journal Name Molecular Phylogenetics and Evolution
Publication Date 2007
Volume Number 42
Issue Number 1
ISSN 1095-9513   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-33751101591
Start Page 236
End Page 247
Total Pages 12
Place of Publication San Diego, US
Publisher Elsevier
Field of Research 0604 - Genetics
HERDC Category C1 - Journal Article (DEST)
Abstract In northern Australia, the debris-feeding termite Amitermes laurensis builds tall, wedge-shaped mounds in the northern part of Cape York Peninsula and Arnhem Land, where their habitats are seasonally flooded, and small dome shaped mounds in the southeastern part of Cape York Peninsula, where their habitats are well-drained. Phylogeographic analyses were conducted in 238 individuals from 30 populations using the mitochondrial cytochrome oxidase II (COII) gene. DNA sequences of 50 haplotypes were used to construct NJ, NIP and ML trees. Phylogenetic trees for 16 Amitermes species showed monophyly of A. laurensis and the variation of A. laurensis mounds did not strongly correspond to the intraspecific phylogeny. It was observed that mounds with the same shape were constructed by phylogenetically different groups under similar environmental conditions and different mounds shapes were built by phylogenetically closely related groups under the different environmental conditions. Thus, phylogenetically close groups of A. laurensis, in different habitats, may adapt to environmental conditions by constructing different mound shapes. We also investigated the phylogeographic structure of A. laurensis. The significant positive correlation between genetic and geographic distances indicated isolation by distance, reflecting restricted dispersal ability of alates. Although the overall genetic structure of A. laurensis showed isolation by distance, we also identified two exceptions: (i) secondary contacts of genetically divergent lineages in southern Cape York Peninsula, and (ii) low genetic differences between geographically separated populations of Cape York Peninsula and Arnhem Land. Therefore, the phylogeography of A. laurensis may reflect continuous gene flow restricted to short distances and past changes of gene flow associated with the fluctuation of environmental conditions accompanying the changing sea levels in the Quaternary. (c) 2006 Elsevier Inc. All rights reserved.
Keywords Amitermes laurensis
intraspecific phylogeny
mound shape
termite
phylogenetic tree selection
population structure
mitochondrial dna
genetic structure
lake carpentaria
model
gulf
substitutions
orientation
DOI http://dx.doi.org/10.1016/j.ympev.2006.06.024   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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