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J Insect Physiol

Title:		Male mate recognition via cuticular hydrocarbons facilitates sexual isolation between sympatric leaf beetle sister species
Author(s):		Zhang B; Xue HJ; Song KQ; Liu J; Li WZ; Nie RE; Yang XK;
Address:		"Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China. Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China. Electronic address: xue@ioz.ac.cn. Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China. Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China. Electronic address: yangxk@ioz.ac.cn"
Journal Title:		J Insect Physiol
Year:		2014
Volume:		20140827
Issue:
Page Number:		15 - 21
DOI:		10.1016/j.jinsphys.2014.08.006
ISSN/ISBN:		1879-1611 (Electronic) 0022-1910 (Linking)
Abstract:		"Chemical signals in insects have been documented to play an important role in mate recognition, and divergence in chemical signals can often cause sexual isolation between closely related species or populations within species. We investigated the role of cuticular hydrocarbons (CHCs), short distance chemical signals, in male mate recognition between the two sympatric elm leaf beetles, Pyrrhalta maculicollis and Pyrrhaltaaenescens. Mating experiments demonstrated that strong sexual isolation between the two species was driven by CHCs divergence. Males preferred to mate with conspecific females with intact conspecific CHCs or conspecific CHCs reapplied after removal. Males also preferred heterospecific females that were treated with conspecific CHCs. Chemical analysis showed that the CHC profiles differ significantly between species. In P. maculicollis dimethyl-branched alkanes between C29 and C35 account for the majority of the saturated alkanes while the CHC profile of P. aenescens mostly consisted of monomethyl-branched alkanes between C22 and C29. Additionally, some compounds, such as 12,18-diMeC32, 12,18-diMeC34, are unique to P. maculicollis"
Keywords:		"Animals Coleoptera/*physiology Female Hydrocarbons/*metabolism Male Mating Preference, Animal/*physiology *Reproductive Isolation Sex Attractants/*physiology Species Specificity Assortative mating Contact sex pheromone Cuticular hydrocarbons Leaf beetle M;"
Notes:		"MedlineZhang, Bin Xue, Huai-Jun Song, Ke-Qing Liu, Jie Li, Wen-Zhu Nie, Rui-E Yang, Xing-Ke eng Research Support, Non-U.S. Gov't England 2014/08/31 J Insect Physiol. 2014 Nov; 70:15-21. doi: 10.1016/j.jinsphys.2014.08.006. Epub 2014 Aug 27"