Enzyme polymorphism among Triatoma infestans (Hemiptera: Reduviidae) colonies.
J Med Entomol
; 32(2): 126-33, 1995 Mar.
Article
em En
| MEDLINE
| ID: mdl-7608917
ABSTRACT
Allozyme variability in populations of the Chagas's disease vector Triatoma infestans (Klug) was investigated by means of starch gel electrophoresis. Samples were taken from nine laboratory colonies established with individuals collected at different localities across the range of this insect in South America. Zymograms for proteins coded by a total of 17 loci were obtained. Allele frequencies, proportion of polymorphic loci (P), mean heterozygosity per locus (H), similarity (S), and identity (I) indices, genetic distance (D), and gene flow among populations were estimated. Mean values for P = 58.53% and for H = 0.095, indicating an important level of genetic variability. There was remarkable similarity among the colonies (mean I = 0.9946). Estimated gene flow among populations was high. However, on the basis of the known natural history of T. infestans, the uniformity of allele frequencies among populations may be interpreted as the result of the recent and rapid dispersal of the species from the site of origin in the Cochabamba Valley, Bolivia.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Polimorfismo Genético
/
Triatominae
/
Isoenzimas
Limite:
Animals
Idioma:
En
Revista:
J Med Entomol
Ano de publicação:
1995
Tipo de documento:
Article
País de afiliação:
Argentina