| Proc Biol Sci. 2002 September 22; 269(1503): 1879–1886. doi: 10.1098/rspb.2002.2077. | PMCID: PMC1691116 |
Gustatory sensilla sensitive to protein kairomones trigger host acceptance by an endoparasitoid. F Bénédet, T Leroy, N Gauthier, C Thibaudeau, E Thibout, and S Renault Institut de Recherche sur la Biologie de l'Insecte, CNRS ESA 6035, France. Abstract Proteins isolated from the host cocoon of Acrolepiopsis assectella (Lepidoptera: Yponomeutoidea) act as kairomones for host acceptance by the endoparasitoid wasp Diadromus pulchellus Wesmael (Hymenoptera: Ichneumonidae). In this study, morphological, ultrastructural and electrophysiological studies were carried out in order to identify the contact chemoreceptive sensilla on the parasitoid antennae that perceive the protein kairomones. Three types of sensillum on the antennae of the females were found to have a chemosensory function. The receptor cell(s) of one sensillar type were shown to give a positive electrophysiological response to protein kairomones. This sensillar type is apically multiporous and female specific. Consequently, this sensillum could be the one implicated in the perception of the protein kairomone that triggers the host-acceptance behaviour of D. pulchellus females. Full Text The Full Text of this article is available as a PDF (535K). These references are in PubMed. This may not be the complete list of references from this article. - Bénédet, F; Bigot, Y; Renault, S; Pouzat, J; Thibout, E. Polypeptides of Acrolepiopsis assectella cocoon (Lepidoptera: Yponomeutoidea): an external host-acceptance kairomone for the parasitoid Diadromus pulchellus (Hymenoptera: Ichneumonidae). J Insect Physiol. 1999 Apr;45(4):375–384. [PubMed]
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