Co-existing locomotory activity and gene expression profiles in a kissing-bug vector of Chagas disease
Copyright © 2020 Elsevier Ltd. All rights reserved..
The 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.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:122 |
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| Enthalten in: |
Journal of insect physiology - 122(2020) vom: 15. Apr., Seite 104021 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Marliére, Newmar Pinto [VerfasserIn] |
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| Links: |
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| Themen: |
Chagas disease |
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| Anmerkungen: |
Date Completed 29.12.2020 Date Revised 29.12.2020 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.jinsphys.2020.104021 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM306305283 |
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| 245 | 1 | 0 | |a Co-existing locomotory activity and gene expression profiles in a kissing-bug vector of Chagas disease |
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| 520 | |a Copyright © 2020 Elsevier Ltd. All rights reserved. | ||
| 520 | |a The 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 | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a Chagas disease | |
| 650 | 4 | |a Foraging gene | |
| 650 | 4 | |a Gene expression | |
| 650 | 4 | |a Locomotory activity | |
| 650 | 4 | |a Rhodnius prolixus | |
| 700 | 1 | |a Lorenzo, Marcelo Gustavo |e verfasserin |4 aut | |
| 700 | 1 | |a Martínez Villegas, Luis Eduardo |e verfasserin |4 aut | |
| 700 | 1 | |a Guarneri, Alessandra Aparecida |e verfasserin |4 aut | |
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