Enzyme polymorphism among Triatoma infestans (Hemiptera: Reduviidae) colonies

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 i...

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Bibliographic Details
Published inJournal of medical entomology Vol. 32; no. 2; p. 126
Main Authors Garcia, B.A. (Universidad Nacional de Cordoba, Cordoba, Argentina.), Soares Barata, J.M, Blanco, A
Format Journal Article
LanguageEnglish
Published England 01.03.1995
Subjects
Alleles
AMERICA DEL SUR
AMERIQUE DU SUD
Animals
Founder Effect
GENE
Gene Frequency
GENES
Isoenzymes - genetics
Phylogeny
POLIMORFISMO ENZIMATICO
Polymorphism, Genetic
POLYMORPHISME ENZYMATIQUE
TRIATOMA INFESTANS
Triatominae - enzymology
Triatominae - genetics
TRYPANOSOMA CRUZI
VARIACION GENETICA
VARIATION GENETIQUE
VECTEUR DE MALADIE
VECTORES
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Summary: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
Bibliography:9558120
L72
ISSN:0022-2585
1938-2928
DOI:10.1093/jmedent/32.2.126