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The remarkable responsiveness of male moths to female released pheromones is based on the extremely sensitive and selective reaction of highly specialized sensory cells in the male antennae. These cells are supposed to be equipped with male-specific receptors for pheromonal compounds, however, the nature of these receptors is still elusive. By using a(More)
Males of the moth species Heliothis virescens are able to detect the female-released pheromone with remarkable sensitivity and specificity, distinguishing between highly related pheromonal compounds. In the past, electrophysiological studies succeeded in assigning sensory hairs to identified compounds revealing three functional types of long sensilla(More)
In moths the detection of female-released sex pheromones involves hairlike structures on the male antenna. These long sensilla trichodea usually contain 2-3 chemosensory neurons accompanied by several supporting cells. Previous studies have shown that the pheromone-specific neurons are characterized by a "sensory neuron membrane protein" (SNMP) which is(More)
The highly specific recognition of female-released sex pheromones in insects by sensory neurons of the male antenna requires specific receptors. Recently, a small family of related candidate pheromone receptors has been identified for a few moth species. In this study, the candidate pheromone receptor HR11 from Heliothis virescens has been characterized.(More)
Communication via specific chemical signals is vitally important for the reproductive behaviour of many species. The first identified sex-attractant pheromone was bombykol from the silkmoth Bombyx mori. This female-released signalling compound is perceived by the male moth with extreme sensitivity and specificity. Antennal sensory cells supposedly respond(More)
Pheromone reception is thought to be mediated by pheromone binding proteins (PBPs) in the aqueous lymph of the antennal sensilla. Recent studies have shown that the only known PBP of Bombyx mori (BmorPBP1) appears to be specifically tuned to bombykol but not to bombykal, raising the question of whether additional subtypes may exist. We have identified two(More)
Pheromone recognition in insects is thought to involve distinct receptor proteins in the dendritic membrane of antennal sensory neurons. We have generated antibodies directed against a peptide derived from the sequence of the candidate pheromone receptor HR13 from Heliothis virescens. The antibodies specifically labelled the cell bodies of a distinct neuron(More)
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