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Chem Senses

Title:		Spatial organization of antennal olfactory sensory neurons in the female Spodoptera littoralis moth: differences in sensitivity and temporal characteristics
Author(s):		Binyameen M; Anderson P; Ignell R; Seada MA; Hansson BS; Schlyter F;
Address:		"Division of Chemical Ecology, Department of Plant Protection Biology, Swedish University of Agricultural Sciences, PO Box 102, SE-230 53 Alnarp, Sweden. muhammad.binyameen@slu.se"
Journal Title:		Chem Senses
Year:		2012
Volume:		20120329
Issue:		7
Page Number:		613 - 629
DOI:		10.1093/chemse/bjs043
ISSN/ISBN:		1464-3553 (Electronic) 0379-864X (Linking)
Abstract:		"Single-cell recordings from olfactory sensory neurons (OSNs), housed in sensilla located at the base and at the tip of the antenna, showed selective responses to plant odors and female sex pheromone in this polyphagous moth. A spatial variation existed in sensitivity: OSNs present on the more proximal segment (P) were more sensitive than those on the more distal segment (D). OSNs of the 2 locations also differed in temporal characteristics: OSNs on P had shorter latency and displayed more phasic responses, whereas those on D had more tonic responses, especially at low stimulus concentrations. The 196 OSNs responding to our 35 monomolecular stimuli in the screening were housed in 32 functional sensillum types: 27 in basiconic, 3 in long-trichoid, 2 in coeloconic, and 3 in auricillic sensilla. The OSNs in basiconic, coeloconic, and auricillic sensilla responded to plant-associated odorants, whereas OSNs in long-trichoid sensilla responded to female-produced sex pheromone components. Short-trichoid sensilla showed spontaneous activity, but no responses to any odorant tested. OSN specificity to plant stimuli ranged from highly specific to broadly tuned, but it did not differ clearly from females in more specialized moths. OSN response diversity is discussed in terms of olfactory coding, behavior, and ecological specialization"
Keywords:		"Animals Arthropod Antennae/physiology Behavior, Animal Female Odorants Olfactory Receptor Neurons/*physiology Sensilla/physiology Sex Attractants Spodoptera/*physiology;"
Notes:		"MedlineBinyameen, Muhammad Anderson, Peter Ignell, Rickard Seada, Mervat A Hansson, Bill S Schlyter, Fredrik eng Research Support, Non-U.S. Gov't England 2012/03/31 Chem Senses. 2012 Sep; 37(7):613-29. doi: 10.1093/chemse/bjs043. Epub 2012 Mar 29"