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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 96, No. 3, 2001, pp. 365-369
Bioline Code: oc01054
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 96, No. 3, 2001, pp. 365-369

 en Chromosomal Comparisons among and within Populations of Simulium (Chirostilbia) pertinax (Diptera, Simuliidae)
Jairo Campos; Carlos Fernando S Andrade & Shirlei M Recco-Pimentel

Abstract

Chromosomal studies were carried on six larval populations of Simulium (Chirostilbia) pertinax from different locations in Brazil. Larvae were collected in the states of Paran, Rio Grande do Sul, Rio de Janeiro and So Paulo. Polytene chromosome map comparisons within and among populations showed no differences in banding pattern, except for some limited polymorphism (secondary NOR and four band polymorphisms). There were no chromosomal variations associated with the resistance or susceptibility of the larvae to temephos. The chromosomal homosequentiality found among the six populations suggests that S. pertinax may be a monomorphic species.

Keywords
cytology, insecticide resistance, polytene chromosomes

 
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