Use este identificador para citar ou linkar para este item:
https://www.arca.fiocruz.br/handle/icict/20710
Tipo de documento
ArtigoDireito Autoral
Acesso restrito
Data de embargo
2030-01-01
Coleções
- IOC - Artigos de Periódicos [12500]
Metadata
Mostrar registro completo
DECIPHERING MORPHOLOGY IN TRIATOMINAE: THE EVOLUTIONARY SIGNALS
Morfologia quantitativa
Especificação
Plasticidade fenotípica
Canalização
Seleção disruptiva
Quantitative morphology
Speciation
Canalization
Disruptive selection
Phenotypic plasticity
Afiliação
UMR IRD-CNRS 2724, Agropolis, 911, BP 64501, 34394. Montpellier, France.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ. Brasil.
Universidad de San Carlos. Escuela de Biologia. Laboratorio de Entomologia Aplicada y Parasitologia. Guatemala.
Universidad de Antioquia. Medellin, Colombia.
Centro Regional de Investigacion de La Rioja, CONICET. Argentina.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ. Brasil.
Universidad de San Carlos. Escuela de Biologia. Laboratorio de Entomologia Aplicada y Parasitologia. Guatemala.
Universidad de Antioquia. Medellin, Colombia.
Centro Regional de Investigacion de La Rioja, CONICET. Argentina.
Resumo em Inglês
Many species of Triatominae show evidence for morphological plasticity. Frequent taxonomic questions arose from this variability leading to disputes about describing new subspecies, species or even genera. We suggest this phenotypic flexibility is primarily an intraspecific feature, but with potential for evolutionary changes. We present arguments for a selection regime leading to the separation of species having low developmental canalization into morphologically distinct ecotypes. We suggest that these ecotypes, or morphs, or forms, may have evolutionary importance even if gene flow still exists between them. Thus, although we consider the morphological plasticity of Triatominae as an intraspecific trait, we defend the idea that it might represent a common evolutionary route to new species. Speciation processes in Triatominae could result from disruptive selection regimes combined with weak developmental canalization. Added to this basic pattern, accidental events could hasten evolutionary change. We suggest the heterosis as one of them.
Palavras-chave
TriatominaeMorfologia quantitativa
Especificação
Plasticidade fenotípica
Canalização
Seleção disruptiva
Palavras-chave em inglês
TriatominaeQuantitative morphology
Speciation
Canalization
Disruptive selection
Phenotypic plasticity
Compartilhar