Publication: The geometric approach to explore the Bactrocera tau complex (Diptera: Tephritidae) in Thailand
Issued Date
2010-08-01
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ISSN
09442006
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2-s2.0-77957016502
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Mahidol University
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SCOPUS
Bibliographic Citation
Zoology. Vol.113, No.4 (2010), 243-249
Suggested Citation
Sangvorn Kitthawee, Jean Pierre Dujardin The geometric approach to explore the Bactrocera tau complex (Diptera: Tephritidae) in Thailand. Zoology. Vol.113, No.4 (2010), 243-249. doi:10.1016/j.zool.2009.12.002 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/28480
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Title
The geometric approach to explore the Bactrocera tau complex (Diptera: Tephritidae) in Thailand
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Abstract
Specimens of the genus Bactrocera were collected from several host plants in northern and western Thailand. They were morphologically recognized as Bactrocera tau and were subdivided into eleven samples according to host plant, geographic origin and time of collection. Twelve landmarks of the right wing were described in a total of 264 males and 276 females. An exploratory analysis using kernel density estimates was performed on the multivariate morphometric space. Non-parametric classification highlighted the existence of two non-overlapping clusters within both males and females. The clusters were not congruent with geography. One cluster (cluster I) contained only one plant, Momordica cochinchinensis, the other one (cluster II) contained five different plants including M. cochinchinensis. Further morphometric analyses on selected samples indicated that the influence of the plants on the shape of the wing could not explain satisfactorily the presence of two clusters. Genetic techniques identified the presence of B. tau cryptic species C in M. cochinchinensis from cluster I, and of B. tau cryptic species A in Coccinia grandis from cluster II. Our working hypothesis is that the two clusters identified by geometric morphometrics were species A and C, respectively. © 2010 Elsevier GmbH.