Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/19244
Título: Cytotaxonomy of four species in the Simulium perflavum species group (Diptera: Simuliidae) from Brazilian Amazonia
Autor: Hamada, Neusa
Adler, Peter H.
Palavras-chave: Diptera
Simuliidae
Simulium Maroniense
Simulium Perflavum
Simulium Rorotaense
Data do documento: 1999
Revista: Systematic Entomology
É parte de: Volume 24, Número 3, Pags. 273-288
Abstract: Polytene chromosomes of four members of the Simulium perflavum species group in Brazil are described, and a standard map for the species group is presented. Simulium rorotaense Floch & Abonnenc, S. perflavum Roubaud and an undescribed species (S. 'X') are chromosomally conservative, each representing a single species with a unique preimaginal habitat. Chromosomal, morphological and ecological evidence indicates that S. maroniense Floch & Abonnenc, previously considered synonymous with S. rorotaense, is a good species. Independent morphological and chromosomal analyses yielded 99.4% agreement in separating larvae of S. rorotaense and 51. maroniense. The two species can be distinguished by gill morphology or by a subterminal inversion on the long arm of chromosome III. Simulium maroniense consists of at least four cytotypes, each with different sex chromosomes and autosomal polymorphism profiles and associated with a particular landscape type, altitude, temperature regime or geographical location. Simulium rorotaense and S. maroniense share one unique inversion, as do S. perflavum and S. 'X', indicating two pairs of sister species. The anthropogenic S. perflavum probably dispersed into Central Amazonia sometime after the mid-1970s.
DOI: 10.1046/j.1365-3113.1999.00080.x
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