Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/15691
Title: Dispersion capacity of Triatoma sherlocki, Triatoma juazeirensis and laboratory-bred hybrids
Authors: Almeida, Carlos E.
Oliveira, Heloisa L.
Correia, Nathalia
Dornak, Lynnette L.
Gumiel, Marcia
Neiva, Vanessa L.
Harry, Myriam
Mendonça, Vagner J.
Costa, Jane
Galvão, Cleber
Affilliation: UNESP. Faculdade de Ciências Farmacêuticas. Departamento de Ciências Biológicas. Laboratório de Parasitologia. Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biodiversidade Entomológica. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biodiversidade Entomológica. Rio de Janeiro, RJ, Brasil.
University of Kansas. Department of Geography. Kansas, USA.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biodiversidade Entomológica. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biodiversidade Entomológica. Rio de Janeiro, RJ, Brasil.
University of Paris-Sud 11. LEGS – Laboratoire Evolution, Génomes et Spéciation. French National Center for Scientific Research. CNRS- IRD (UR 072), Gif-sur-Yvette, France.
UNESP. Faculdade de Ciências Farmacêuticas. Departamento de Ciências Biológicas. Laboratório de Parasitologia. Brasil / Universidade Estadual de Campinas. Instituto de Biologia. Departamento de Biologia Animal. Campinas, SP, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biodiversidade Entomológica. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos. Rio de Janeiro, RJ, Brasil.
Abstract: Flight dispersion is recognized as one of the most important mechanisms for triatomine house infestation. Triatoma sherlocki and T. juazeirensis are closely related species that occur within the same ecotope and their possible reproductive boundaries are unknown. T. sherlocki has shorter wings than T. juazeirensis; a characteristic that possibly implies in reduced flight dispersion, however, this species has been found to invade and colonize homes in Bahia, Brazil. Here, we tested the flight potential of T. sherlocki, compared to that of T. juazeirensis and laboratory-bred hybrids. Insects were kept in an apparatus designed to distinguish flyers from nonflyers. Fifty-one and 53% of T. juazeirensis and hybrids were flyers respectively, whereas no T. sherlocki were recorded to fly. Morphometric analysis of the main structures associated with the locomotor abilities showed that hybrids exhibited intermediate size for most of characters. The width of pronotum of both hybrids and T. juazeirensis was significantly larger than T. sherlocki. We suggested that lack of flight ability of T. sherlocki is possibly a result of reduced wing size and distinct shape, combined with undeveloped flight muscles in a shorter thoracic box. The mobility of T. sherlocki might be compensated by its significantly longer legs, and may possibly increase its ability to invade human dwellings by active dispersion. What is more, this study showed that hybrids between T. sherloki and T. juazeirensis have intermediate morphological characters that may give them higher fitness than their parents, and thus may advance the process of house infestation by either fight or walking in case of an eventual natural hybridization.
Keywords: Triatominae
Brachypterous
Chagas Disease
Domiciliation
Geometric morphometric analysis
keywords: Triatominae
Doença de Chagas
Análises de morfometria geométrica
Braquípteros
Issue Date: 2012
Publisher: Elsevier
Citation: ALMEIDA, Carlos E. et al. Dispersion capacity of Triatoma sherlocki, Triatoma juazeirensis and laboratory-bred hybrids. Acta Tropica, v.122, p.71-79, 2012.
DOI: 10.1016/j.actatropica.2011.12.001
ISSN: 0001-706X
Copyright: restricted access
Appears in Collections:IOC - Artigos de Periódicos

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