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Sci Rep

Title:		A closer look at sex pheromone autodetection in the Oriental fruit moth
Author(s):		Perez-Aparicio A; Ammagarahalli B; Gemeno C;
Address:		"Department of Crop and Forest Sciences, University of Lleida, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain. Gaiagen Technologies Pvt Ltd (Formerly Pest Control India Pvt Ltd), Bengaluru, 562163, India. Department of Crop and Forest Sciences, University of Lleida-Agrotecnio-CERCA Center, Av. Alcalde Rovira Roure 191, 25198, Lleida, Spain. cesar.gemeno@udl.cat"
Journal Title:		Sci Rep
Year:		2022
Volume:		20220429
Issue:		1
Page Number:		7019 -
DOI:		10.1038/s41598-022-10954-x
ISSN/ISBN:		2045-2322 (Electronic) 2045-2322 (Linking)
Abstract:		"Female moths emit sex pheromone to attracts males, and although they are not attracted to their own sex pheromone, they appear to detect it as it affects their behavior. In order to elucidate the mechanism of pheromone 'autodetection' we compared responses of olfactory receptor neurons (ORNs) of male and female Grapholita molesta, a species with reported pheromone autodetection. Two concentrations of the major (Z8-12:Ac) and minor (E8-12:Ac) sex pheromone components, a plant-volatile blend containing methyl salicylate, terpinyl acetate and (E)-beta-farnesene, and the male-produced hair-pencil (i.e., courtship) pheromone (ethyl trans-cinnamate) were tested in 45 male and 305 female ORNs. Hierarchical cluster analysis showed radically different peripheral olfactory systems between sexes that could be linked to their specific roles. In males 63% of the ORNs were tuned specifically to the major or minor female sex pheromone components, and 4% to the plant volatile blend, while the remaining 33% showed unspecific responses to the stimulus panel. In females 3% of the ORNs were specifically tuned to the male hair-pencil pheromone, 6% to the plant volatile blend, 91% were unspecific, and no ORN was tuned their own sex pheromone components. The lack of sex pheromone-specific ORNs in females suggests that they are not able to discriminate pheromone blends, and thus pheromone autodetection is unlikely in this species. We discuss our results in the context of the methodological limitations inherent to odor stimulation studies"
Keywords:		Animals Female Fruit Male *Moths/physiology *Olfactory Receptor Neurons/physiology Pheromones Plants *Sex Attractants/physiology;
Notes:		"MedlinePerez-Aparicio, Alicia Ammagarahalli, Byrappa Gemeno, Cesar eng Research Support, Non-U.S. Gov't England 2022/04/30 Sci Rep. 2022 Apr 29; 12(1):7019. doi: 10.1038/s41598-022-10954-x"