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Biomed Res Int

Title:		Sexy Mouth Odour? Male Oral Gland Pheromone in the Grain Beetle Parasitoid Lariophagus distinguendus (Forster) (Hymenoptera: Pteromalidae)
Author(s):		Konig K; Seeger L; Steidle JL;
Address:		"Institute for Zoology, Animal Ecology (220c), University of Hohenheim, 70593 Stuttgart, Germany"
Journal Title:		Biomed Res Int
Year:		2015
Volume:		20151022
Issue:
Page Number:		216952 -
DOI:		10.1155/2015/216952
ISSN/ISBN:		2314-6141 (Electronic) 2314-6133 (Print)
Abstract:		"Throughout the animal kingdom, sexual pheromones are used for the attraction of mates and as courtship signals but also enable sexual isolation between species. In the parasitic wasp Lariophagus distinguendus, male courtship behaviour consisting of wing fanning, antennal stroking of the female antenna, and head nodding stimulates female receptivity leading to copulation. Recently L. distinguendus was reported to consist of two different lineages, which are sexually isolated because males fail to elicit receptivity in foreign females. It is unclear, however, which part of the courtship behaviour triggers female receptivity and therefore could be a mechanism causing sexual isolation. Here we show that in L. distinguendus a nonvolatile male oral pheromone is essential to release the female receptivity signal. In contrast, male wing fanning and antennal contact play a minor role. Additionally, the composition of the oral pheromone depends on the developmental host and females learn the composition upon emergence from the host substrate. These results will enable more detailed work on oral sexual pheromones to answer the question of how they are involved in the speciation process of L. distinguendus and other parasitoid species, for a better understanding of the huge biodiversity in this group"
Keywords:		"Animals Coleoptera/*physiology Female Male Mouth/*physiology *Odorants Pheromones/*metabolism Sex Attractants/metabolism Sex Factors Sexual Behavior, Animal/*physiology;"
Notes:		"MedlineKonig, Kerstin Seeger, Lucy Steidle, Johannes L M eng 2015/11/19 Biomed Res Int. 2015; 2015:216952. doi: 10.1155/2015/216952. Epub 2015 Oct 22"