Co-existing locomotory activity and gene expression profiles in a kissing-bug vector of Chagas disease

dc.creatorMarliere, Newmar Pinto
dc.creatorLorenzo, Marcelo Gustavo
dc.creatorVillegas, Luis Eduardo Martínez
dc.creatorGuarneri, Alessandra Aparecida
dc.date2023-05-16T16:32:05Z
dc.date2023-05-16T16:32:05Z
dc.date2020
dc.date.accessioned2023-09-26T23:38:04Z
dc.date.available2023-09-26T23:38:04Z
dc.identifierMARLIÉRE, Newmar Pinto et al. Co-existing locomotory activity and gene expression profiles in a kissing-bug vector of Chagas disease. J Insect Physiol., v. 122, 104021, 2020. doi: 10.1016/j.jinsphys.2020.104021.
dc.identifier0022-1910
dc.identifierhttps://www.arca.fiocruz.br/handle/icict/58442
dc.identifier10.1016/j.jinsphys.2020.104021
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8892623
dc.descriptionThe triatomine bug Rhodnius prolixus is a main vector of Chagas disease, which affects several million people in Latin-America. These nocturnal insects spend most of their locomotory activity during the first hours of the scotophase searching for suitable hosts. In this study we used multivariate analysis to characterize spontaneous locomotory activity profiles presented by 5th instar nymphs. In addition, we investigated whether sex and the expression of the foraging (Rpfor) gene could modulate this behavioral trait. Hierarchical Clustering and Redundancy Analyses detected individuals with distinct locomotory profiles. In addition to a great variation in locomotory intensity, we found that a proportion of nymphs walked during unusual time intervals. Locomotory activity profiles were mostly affected by the cumulative activity expressed by the nymphs. These effects promoted by cumulative activity were in turn influenced by nymph sex. Sex and the Rpfor expression had a significant influence on the profiles, as well as in the levels of total activity. In conclusion, the locomotory profiles evinced by the multivariate analyses suggest the co-existence of different foraging strategies in bugs. Additionally, we report sex-specific effects on the locomotion patterns of 5th instar R. prolixus, which are apparently modulated by the differential expression of the Rpfor gene.
dc.formatapplication/pdf
dc.languageeng
dc.publisherPergamon Press
dc.rightsopen access
dc.subjectChagas disease
dc.subjectForaging gene
dc.subjectGene expression
dc.subjectLocomotory activity
dc.subjectRhodnius prolixus
dc.titleCo-existing locomotory activity and gene expression profiles in a kissing-bug vector of Chagas disease
dc.typeArticle


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