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Moth sex pheromones affect interspecific competition among sympatric species and possibly population distribution by modulating pre-mating behavior

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Insect Science 2023年第2期30卷 501-516页

作者： Jianjun Cheng Qinghua Chen Qianshuang Guo Yongjun Du Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang ProvinceZhejiang UniversityHangzhouChina Institute of Plant Protection Sichuan Academy of Agricultural Sciences/Key Laboratory of Integrated Pest Management on Crops in SouthwestMinistry of AgricultureChengduChina

Premating behaviors mediated by pheromones play pivotal roles in animal mating *** natural populations of the striped stem borer Chilo suppressalis and the rice leaf roller Cnaphalocrocis medinalis in the rice field habitat,we discovered that Z11-16:Ald,a major component of the *** pheromone,modulated the premating behavior of ***.Z11-16:Ald evoked a strong olfactory response in male antennae and strongly inhibited the sex pheromone trapping of male *** in the *** functions of three *** sex pheromone receptor genes(CmedPR1–3)were verified through heterologous expression in Xenopus ***1 responded to Z11-18:OH and Z11-18:Ald,as well as the interspecific pheromone compound Z11-16:Ac of sympatric species;CmedPR2 responded to Z13-18:OH and Z13-18:Ald,as well as the sex pheromone compounds Z11-16:Ald and Z9-16:Ald of sympatric species;and CmedPR3 responded to Z11-18:OH and Z13-18:OH,as well as the interspecific pheromones Z11-16:OH,Z9-16:Ald,Z11-16:Ac,and Z11-16:Ald of sympatric ***,CmedPR2 and CmedPR3 share the ligand Z11-16:Ald,which is not a component of the *** sex ***,the sex pheromones of interspecific species affected the input of neural signals by stimulating the sex pheromone receptors on the antennae of male *** moths,thereby inhibiting the olfactory responses of the male moths to the sex *** results demonstrate chemical communication among sympatric species in the rice field habitat,the recognition of intra-and interspecific sex pheromones by olfactory receptors,and how insect premating behaviors are modulated to possibly affect resource partitioning.

关键词： Chilo suppressalis Cnaphalocrocis medinalis premating sex pheromone sex pheromone receptors two-electrode voltage-clamp

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