ArticleMemorias do Instituto Oswaldo Cruz2025
Reconstructing Sordida subcomplex (Hemiptera, Reduviidae, Triatominae) phylogeny across species distribution range.
Article in Memorias do Instituto Oswaldo Cruz, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThe conformation of the Sordida subcomplex has been a topic of prolonged debate, with diverse methodological approaches employed to discern its constituent species. Up to now, Triatoma sordida, T. garciabesi and T. rosai comprise part of this subcomplex. Distinguishing and identifying these three species pose significant challenges due to their pronounced morphological similarity, overlapping distributions, and presence of natural hybrids.
objectivesThis study aims to uncover the genetic diversity and geographic spread of these three species.
methodsWe analysed a mitochondrial cytochrome b gene fragment and complemented it with chromosomal studies across natural populations from an extensive geographical range, including Argentina, Bolivia, Brazil, and Paraguay.
findingsPhylogenetic analyses revealed genetic distances that suggest the presence of at least six putative species, rather than the three currently recognised. MAIN
conclusionsThe present findings underscore the potency and significance of molecular analyses from natural populations for species identification and highlight the limitations of morphology in classifying Triatominae species.
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