Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/11653
Title: Influence of the palm tree species on the variability of Rhodnius nasutus Stål, 1859 (Hemiptera, Reduviidae, Triatominae).
Authors: Dias, Fernando Braga Stehling
Paula, Alexandre Silva de
Belisário, Carlota Josefovicz
Lorenzo, Marcelo Gustavo
Bezerra, Cláudia Mendonça
Harry, Myriam
Diotaiuti, Liléia
Affilliation: Fundação Oswaldo Cruz. Centro de Pesquisa René Rachou. Laboratório de Triatomíneos e Epidemiologia da Doença de Chagas. Belo Horizonte, MG, Brazil
Universidade Federal de Ouro Preto. Instituto de Ciências Exatas e Biológicas. Departamento de Biodiversidade, Evolução e Meio Ambiente. Ouro Preto, MG, Brazil
Fundação Oswaldo Cruz. Centro de Pesquisa René Rachou. Laboratório de Triatomíneos e Epidemiologia da Doença de Chagas. Belo Horizonte, MG, Brazil
Fundação Oswaldo Cruz. Centro de Pesquisa René Rachou. Laboratório de Triatomíneos e Epidemiologia da Doença de Chagas. Belo Horizonte, MG, Brazil
Secretaria da Saúde do Estado do Ceará. Fortaleza, CE, Brazil
Gif-sur-Yvette Cedex & Université Paris sud-11, France
Fundação Oswaldo Cruz. Centro de Pesquisa René Rachou. Laboratório de Triatomíneos e Epidemiologia da Doença de Chagas. Belo Horizonte, MG, Brazil
Abstract: This work evaluated the occurrence and genetic structure of Rhodnius nasutus sampled in two sites using morphometry and microsatellites. These sites, presented distinct abiotic features and palm trees: (i) nine Attalea speciosa palm trees, so called babaçu, were sampled from the Meruoca Mountain Ridge, a sloping region of reminiscent forest in the state of Ceará, Brazil, and (ii) 17 Copernicia prunifera palm trees, so called carnaúba, were sampled in the scrub savanna region (Sobral district) that surrounds the mountain ridge. Of the twenty-six palm trees dissected, 70.6% of carnauba and 88.9% of babaçu were infested by R. nasutus. The micro-climatic data where R. nasutus were sheltered demonstrated that the babaçu and carnaúba palm trees presented significant differences (p < 0.05) in relation to the external environment, except for temperature and relative humidity regulation, suggesting that the architecture of the babaçu crown keeps a more stable micro-environment. The morphometric studies of the F1 generation demonstrated that insects from the babaçu (A. speciosa) were significantly larger (p = 0.000) than those collected in carnaúba (C. prunifera) palm trees. Also, microsatellite analysis demonstrated a high genetic differentiation between the two groups of R. nasutus (Rst = −0.77). Our results suggest that the difference in size between the populations is probably related to an incipient process of genetic drift in populations associated to each palm tree, probably also driven by the different climatic features observed in these micro-environments.
Keywords: Rhodnius nasutus
Ceará
Palm trees
Morphometry
Microclimatic data
Microsatellites
Issue Date: 2011
Publisher: Elsevier Science
Citation: DIAS, Fernando Braga Stehling et al. Influence of the palm tree species on the variability of Rhodnius nasutus Stål, 1859 (Hemiptera, Reduviidae, Triatominae). Infect Genet Evol, vol. 11, n. 5, p. 869-877, 2011
DOI: 10.1016/j.meegid.2011.02.008
ISSN: 1567-1348
Copyright: restricted access
Appears in Collections:MG - IRR - Artigos de Periódicos



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