| Title: | Triatomines of the Genus Rhodnius Do Not Mark Shelters with Feces |
| Address: | "Vector Behavior and Pathogen Interaction Group, Instituto Rene Rachou-FIOCRUZ, Belo Horizonte, Minas Gerais, Brazil. Vector Behavior and Pathogen Interaction Group, Instituto Rene Rachou-FIOCRUZ, Belo Horizonte, Minas Gerais, Brazil. marcelo.lorenzo@fiocruz.br" |
| DOI: | 10.1007/s10886-020-01199-x |
| ISSN/ISBN: | 1573-1561 (Electronic) 0098-0331 (Linking) |
| Abstract: | "Aggregation to volatile compounds emitted by feces has been demonstrated for several triatomine species. This signal guides the insects to suitable places that offer physical protection while providing contact with conspecifics. Though the use of aggregation marks has also been reported for Rhodnius spp., it is still unclear whether feces really cause these insects to aggregate inside shelters. In two-choice assays using artificial shelters, we found that refuges associated with a blend of synthetic compounds based on volatiles released by the feces of some triatomine species and reported to be attractive to several species, did not induce shelter choice in Rhodnius prolixus Stal, 1859. In addition, we show that refuges associated with feces of conspecifics did not induce shelter choice in R. prolixus, R. robustus Larrousse, 1927, R. neglectus Lent, 1954, and R. ecuadoriensis Lent and Leon, 1958. In contrast, as expected, control experiments with Triatoma infestans (Klug, 1834), another triatomine known to aggregate in shelters marked with feces, definitely showed preference for shelters containing feces of conspecifics. Our results clearly show that volatile signals associated with feces do not mediate shelter choice in Rhodnius spp. As a consequence, a paradigm shift will be necessary and, consequently, ab ovo investigations on the clues inducing aggregation behavior in these species" |
| Keywords: | "Animals Behavior, Animal/*physiology Feces/*chemistry Models, Theoretical Odorants/analysis Rhodnius/growth & development/*physiology Triatoma/growth & development/*physiology Volatile Organic Compounds/analysis Aggregation Chagas disease Fecal signals Rh;" |
| Notes: | "MedlineMosquera, Katherine D Lorenzo, Marcelo G eng PEC-PG Process number: 190677/2014-7/Conselho Nacional de Desenvolvimento Cientifico e Tecnologico/ CRA - APQ-03672-16/Fundacao de Amparo a Pesquisa do Estado de Minas Gerais/ 573959/2008-0/Instituto Nacional de Ciencia e Tecnologia em Entomologia Molecular (BR)/ 2017-2001-179 - Y17F16/Studium Loire Valley-Institute for Advanced Studies/ not applicable/Fundacao Oswaldo Cruz/ 2020/07/20 J Chem Ecol. 2020 Sep; 46(9):865-870. doi: 10.1007/s10886-020-01199-x. Epub 2020 Jul 18" |
