Sistemática de seis espécies de Anopheles (Nyssorhynchus) Blanchard (Diptera: Culicidae) / Systematic of six species of the Anopheles

AUTOR(ES)

Maysa Tiemi Motoki

DATA DE PUBLICAÇÃO

2007

RESUMO

Introduction The Anopheles oswaldoi and An. albitarsis complexes contain morphologically cryptic species, including some important vectors of human malaria. Species diagnosis within each complex is problematic due to polymorphisms and overlapping morphological characters in identification keys and many times must employ molecular biology methods. Although correct identification is necessary to evaluate the respective epidemiological importance of each species, there exist few studies that have characterized the morphological characters of the An. oswaldoi and An. albitarsis complexes. Objectives Morphologically and molecularly characterize An. oswaldoi s.s.; morphologically characterize five species of the An. albitarsis complex; establish morphological characters that separate species of the An. albitarsis complex; resolve nomenclature problems within An. marajoara. Methods- Specimens used originated from the entomological collections of the Departamento de Epidemiologia of the Faculdade de Saúde Pública (Universidade de São Paulo), from the Museu Nacional do Rio de Janeiro and from Instituto Oswaldo Cruz (Rio de Janeiro) in Brazil and of the National Museum of Natural History (USA). The adult females, male genitalia, fourthinstar larvae and pupae from six species of Nyssorhynchus and the firstinstar larva of An. albitarsis s.s. were described and illustrated. Forty adult female characters were identified form five species of the An. albitarsis complex. Multivariate statistics were used in the morphometric analyses. Results Adult males and females, fourth-instar larvae and pupae of An.oswaldoi s.s., An. albitarsis s.s., An. marajoara and An. deaneorum were redescribed. Those of An. albitarsis B and An. albitarsis E were described.Results from multivariate analyses of morphological characters separated the five species of the An. albitarsis complex. To promote the nomenclature stability of An. marajoara, the male-genitalia slide associated with the holotype was invalidated. Conclusions It was possible to characterize An. oswaldoi s.s. using both morphological characters and molecular markers. Results from morphometric analyses showed that it is possible a morphological distinction among all five species, and that the specimens of An. marajoara may belong to two distinct species.

ASSUNTO(S)

nyssorhynchus an. albitarsis criptic species morfometria espécies crípticas morfology an. oswaldoi an. albitarsis morfometry nyssorhynchus morfologia an. oswaldoi

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