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Insect Sci

Title:		Moth sex pheromones affect interspecific competition among sympatric species and possibly population distribution by modulating pre-mating behavior
Author(s):		Cheng J; Chen Q; Guo Q; Du Y;
Address:		"Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Zhejiang University, Hangzhou, China. Institute of Plant Protection, Sichuan Academy of Agricultural Sciences/Key Laboratory of Integrated Pest Management on Crops in Southwest, Ministry of Agriculture, Chengdu, China"
Journal Title:		Insect Sci
Year:		2023
Volume:		20220823
Issue:		2
Page Number:		501 - 516
DOI:		10.1111/1744-7917.13099
ISSN/ISBN:		1744-7917 (Electronic) 1672-9609 (Linking)
Abstract:		"Premating behaviors mediated by pheromones play pivotal roles in animal mating choices. In 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 C. suppressalis pheromone, modulated the premating behavior of C. medinalis. Z11-16:Ald evoked a strong olfactory response in male antennae and strongly inhibited the sex pheromone trapping of male C. medinalis in the field. The functions of three C. medinalis sex pheromone receptor genes (CmedPR1-3) were verified through heterologous expression in Xenopus oocytes. CmedPR1 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 species. Thus, CmedPR2 and CmedPR3 share the ligand Z11-16:Ald, which is not a component of the C. medinalis sex pheromone. Therefore, the sex pheromones of interspecific species affected the input of neural signals by stimulating the sex pheromone receptors on the antennae of male C. medinalis moths, thereby inhibiting the olfactory responses of the male moths to the sex pheromones. Our 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"
Keywords:		Male Animals *Moths/physiology *Sex Attractants/pharmacology Sympatry Pheromones Ecology Demography Chilo suppressalis Cnaphalocrocis medinalis premating sex pheromone sex pheromone receptors two-electrode voltage-clamp;
Notes:		"MedlineCheng, Jianjun Chen, Qinghua Guo, Qianshuang Du, Yongjun eng Australia 2022/07/29 Insect Sci. 2023 Apr; 30(2):501-516. doi: 10.1111/1744-7917.13099. Epub 2022 Aug 23"