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2030-01-01
Sustainable Development Goals
03 Saúde e Bem-EstarCollections
- IOC - Artigos de Periódicos [12747]
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MORPHOLOGY OF THE TERMINAL ABDOMINAL SEGMENTS IN FEMALES OF TRIATOMINAE (INSECTA: HEMIPTERA: REDUVIIDAE)
Author
Affilliation
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.
Universidade Estadual Paulista. Faculdade de Ciências Farmacêuticas. Departamento de Ciências Biológicas. Laboratório de Parasitologia. Araraquara, 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.
Universidade Estadual Paulista. Faculdade de Ciências Farmacêuticas. Departamento de Ciências Biológicas. Laboratório de Parasitologia. Araraquara, 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
Triatominae (Insecta: Hemiptera: Reduviidae) includes 151 extant species that are all potential vectors of Chagas
disease. The relationships among these species have been recently studied based on molecular and cytogenetical
approaches, and although the morphology of these insects is fairly described, wide comparative studies and
cladistics analysis based on this feature are lacking. A comparative study of the terminal abdominal segments in
females of 26 species of Triatominae was performed in order to evaluate their importance for the distinction of
genera and species, and obtain characters to be used in cladistics analyses. The results showed that the short
combined segments IX and X in dorsal view is not diagnostic for Rhodnius, and the elongated trapezoidal dorsal
shape of combined segments IX and X is not exclusive of Panstrongylus. There are diagnostic features at the
generic level for Rhodnius and Dipetalogaster, but not for the other genera studied. Among the structures examined,
tergite IX is the most valuable for distinguishing species of Triatominae. The female terminalia is useful
for the specific identification of Triatominae, but cannot be used to diagnose most genera or to directly assess
supraspecific relationships. These can only be unveiled by using additional morphological and/or molecular data
in broad cladistics analyses.
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