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Insects

Title:		Effects of Multi-Component Backgrounds of Volatile Plant Compounds on Moth Pheromone Perception
Author(s):		Conchou L; Lucas P; Deisig N; Demondion E; Renou M;
Address:		"Institute of Ecology and Environmental Sciences of Paris, iEES-Paris, INRAE, Sorbonne Universite, CNRS, IRD, UPEC, Universite Paris Diderot, 78026 Versailles, France"
Journal Title:		Insects
Year:		2021
Volume:		20210501
Issue:		5
Page Number:		-
DOI:		10.3390/insects12050409
ISSN/ISBN:		2075-4450 (Print) 2075-4450 (Electronic) 2075-4450 (Linking)
Abstract:		"The volatile plant compounds (VPC) alter pheromone perception by insects but mixture effects inside insect olfactory landscapes are poorly understood. We measured the activity of receptor neurons tuned to Z7-12Ac (Z7-ORN), a pheromone component, in the antenna and central neurons in male Agrotis ipsilon while exposed to simple or composite backgrounds of a panel of VPCs representative of the odorant variety encountered by a moth. Maps of activities were built using calcium imaging to visualize which areas in antennal lobes (AL) were affected by VPCs. We compared the VPC activity and their impact as backgrounds at antenna and AL levels, individually or in blends. At periphery, VPCs showed differences in their capacity to elicit Z7-ORN firing response that cannot be explained by differences in stimulus intensities because we adjusted concentrations according to vapor pressures. The AL neuronal network, which reformats the ORN input, did not improve pheromone salience. We postulate that the AL network evolved to increase sensitivity and to encode for fast changes of pheromone at some cost for signal extraction. Comparing blends to single compounds indicated that a blend shows the activity of its most active component. VPC salience seems to be more important than background complexity"
Keywords:		moth odor background odorscape olfactory coding olfactory neuron pheromone plant volatile compounds;
Notes:		"PubMed-not-MEDLINEConchou, Lucie Lucas, Philippe Deisig, Nina Demondion, Elodie Renou, Michel eng ANR - 15-CE02-010/Agence Nationale de la Recherche/ Switzerland 2021/06/03 Insects. 2021 May 1; 12(5):409. doi: 10.3390/insects12050409"