cuticular compounds bring new insight in the post-glacial recolonization of a pyrenean area deutonura deficiens deharveng, 1979 complex, a case study表皮化合物带来新的见解的幅度大开拓殖民地的比利牛斯山脉的地区deutonura deficiens deharveng,1979复杂,一个案例研究.pdfVIP

Cuticular Compounds Bring New Insight in the Post- Glacial Recolonization of a Pyrenean Area: Deutonura deficiens Deharveng, 1979 Complex, a Case Study 1 ¤ 2 2 David Porco * , Anne Bedos , Louis Deharveng ´ ´ ´ 1 Laboratoire Dynamique de la Biodiversite, UMR 5172, Universite Paul Sabatier, Toulouse, France, 2 UMR 7205 CNRS ‘‘Origine, Structure et Evolution de la Biodiversite’’, ´ Museum National d’Histoire Naturelle, Paris, France Abstract Background: In most Arthropod groups, the study of systematics and evolution rely mostly on neutral characters, in this context cuticular compounds, as non-neutral characters, represent an underexplored but potentially informative type of characters at the infraspecific level as they have been routinely proven to be involved in sexual attraction. Methods and Findings: The collembolan species complex Deutonura deficiens was chosen as a model in order to test the utility of these characters for delineating four infraspecific entities of this group. Specimens were collected for three subspecies (D. d. deficiens, D. d. meridionalis, D. d. sylvatica) and two morphotypes (D. d. sylvatica morphoype A and B) of the complex; an additional species D. monticola was added. Cuticular compounds were extracted and separated by gas chromatography for each individual. Our results demonstrate that cuticular compounds succeeded in separating the different elements of this complex. Those data allowed also the reconstruction of the phylogenetic relationships among them. Conclusions: The discriminating power of cuticular compounds is directly related to their involvement in sexual