Int. J. Mol. Sci. 2012, 13(8), 10441-10460; doi:10.3390/ijms130810441
Article

Species Differentiation of Chinese Mollitrichosiphum (Aphididae: Greenideinae) Driven by Geographical Isolation and Host Plant Acquirement

1,2,†email, 1,†email, 1email, 1email and 1,* email
Received: 21 June 2012; in revised form: 2 August 2012 / Accepted: 3 August 2012 / Published: 21 August 2012
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The impact of both the uplift of the Qinghai-Tibetan Plateau (QTP) and the separation of the Taiwan and Hainan Islands on the evolution of the fauna and flora in adjacent regions has been a topic of considerable interest. Mollitrichosiphum is a polyphagous insect group with a wide range of host plants (14 families) and distributions restricted to Southeast Asia. Based on the mitochondrial Cytochrome C Oxidase Subunit I (COI) and Cytochrome b (Cytb) genes, the nuclear elongation factor-1α (EF-1α) gene, and the detailed distribution and host plant data, we investigated the species differentiation modes of the Chinese Mollitrichosiphum species. Phylogenetic analyses supported the monophyly of Mollitrichosiphum. The divergence time of Mollitrichosiphum tenuicorpus (c. 11.0 mya (million years ago)), Mollitrichosiphum nandii and Mollitrichosiphum montanum (c. 10.6 mya) was within the time frame of the uplift of the QTP. Additionally, basal species mainly fed on Fagaceae, while species that fed on multiple plants diverged considerably later. Ancestral state reconstruction suggests that Fagaceae may be the first acquired host, and the acquisition of new hosts and the expansion of host range may have promoted species differentiation within this genus. Overall, it can be concluded that geographical isolation and the expansion of the host plant range may be the main factors driving species differentiation of Mollitrichosiphum.
Keywords: aphid; divergence time; geographical isolation; host plant; Mollitrichosiphum; phylogeny; Qinghai-Tibetan Plateau; southern China; speciation
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MDPI and ACS Style

Zhang, R.; Huang, X.; Jiang, L.; Lei, F.; Qiao, G. Species Differentiation of Chinese Mollitrichosiphum (Aphididae: Greenideinae) Driven by Geographical Isolation and Host Plant Acquirement. Int. J. Mol. Sci. 2012, 13, 10441-10460.

AMA Style

Zhang R, Huang X, Jiang L, Lei F, Qiao G. Species Differentiation of Chinese Mollitrichosiphum (Aphididae: Greenideinae) Driven by Geographical Isolation and Host Plant Acquirement. International Journal of Molecular Sciences. 2012; 13(8):10441-10460.

Chicago/Turabian Style

Zhang, Ruiling; Huang, Xiaolei; Jiang, Liyun; Lei, Fumin; Qiao, Gexia. 2012. "Species Differentiation of Chinese Mollitrichosiphum (Aphididae: Greenideinae) Driven by Geographical Isolation and Host Plant Acquirement." Int. J. Mol. Sci. 13, no. 8: 10441-10460.


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