Behavioral and Electrophysiological Responses of Triatoma brasiliensis Males to Volatiles Produced in the Metasternal Glands of Females

dc.creatorVitta, Ana Cristina Renna de
dc.creatorBohman, Björn
dc.creatorUnelius, C Rikard
dc.creatorLorenzo, Marcelo Gustavo
dc.date2023-05-18T15:45:03Z
dc.date2023-05-18T15:45:03Z
dc.date2009
dc.date.accessioned2023-09-26T20:33:10Z
dc.date.available2023-09-26T20:33:10Z
dc.identifierVITTA, Ana Cristina Renna de et al. Behavioral and electrophysiological responses of Triatoma brasiliensis males to volatiles produced in the metasternal glands of females. J Chem Ecol., v. 35, n. 10, p. 1212-1221, 2009. doi: 10.1007/s10886-009-9709-2.
dc.identifier0098-0331
dc.identifierhttps://www.arca.fiocruz.br/handle/icict/58479
dc.identifier10.1007/s10886-009-9709-2
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8859373
dc.descriptionIn many insects, mate finding is mediated by volatile sex pheromones, but evidence for this phenomenon in triatomines (Heteroptera: Reduviidae) is still fragmentary. Recently, it was shown that metasternal glands (MGs) are involved in producing signals related to the sexual communication of Triatoma infestans and Rhodnius prolixus. Based on this, we tested whether MG volatiles could be involved in the sexual communication of Triatoma brasiliensis. Odor-mediated orientation responses were studied by using a T-tube olfactometer. These tests showed that males exhibit positive anemotaxis when confronted with adult odor-laden air currents. Moreover, females that had their metasternal glands occluded did not elicit significant orientation by males. Compounds produced by the MGs of T. brasiliensis females were identified by means of SPME, GC-FID, and GC-MS, with achiral and chiral columns. All substances identified were ketones and alcohols, and similar compound profiles were found in the secretions produced by both sexes. The most abundant compounds identified were 3-pentanone, followed by (4R)-methyl-1-heptanol, 3-pentanol, and (2S)-methyl-1-butanol. In addition, GC-EAD recordings showed that the antennae of males responded to several of the main components of female MG secretions. Our results showed that compounds produced by the MGs of T. brasiliensis females are involved in the sexual communication of this species
dc.description2099-12-31
dc.formatapplication/pdf
dc.languageeng
dc.publisherSpringer
dc.rightsrestricted access
dc.subjectTriatoma brasiliensis
dc.subjectIdentification
dc.subjectOlfactometer
dc.subjectMetasternal gland
dc.subjectVolatiles
dc.subjectPheromones
dc.subjectGC-EAD
dc.subjectHeteroptera
dc.subjectReduviidae
dc.titleBehavioral and Electrophysiological Responses of Triatoma brasiliensis Males to Volatiles Produced in the Metasternal Glands of Females
dc.typeArticle


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