INVESTIGADORES
CHIAPPERO Marina Beatriz
artículos
Título:
Inheritance of random amplified polymorphic DNA (RAPD-PCR) markers and its usefulness for population genetic studies in the reservoir of Argentine Hemorrhagic Fever, Calomys musculinus (Rodentia: Muridae)
Autor/es:
CHIAPPERO, M.B.; GARDENAL, C.N.
Revista:
HEREDITAS
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2001 vol. 135 p. 85 - 93
ISSN:
0018-0661
Resumen:
In order to assess the reliability of RAPD markers in the estimation of the genetic structure of natural populations of the murid rodent Calomys musculinus (reservoir of Junin virus, ethiological agent of Argentine Hemorrhagic Fever), we have analysed the heritability of RAPD bands in 10 parents and their offspring (33 individuals). Fourteen out of a total of 119 bands obtained were absent in the parental patterns, but consistently amplified in offspring from some families. These bands can be eliminated from analyses. Overall degree of band sharing between individuals, including non-parental bands, correctly grouped members of a family in the same cluster in a UPGMA tree, with a high bootstrap percentage. Results support the usefulness of RAPDs as a hereditable marker. One hundred polymorphic RAPD loci were identified in three natural populations of C. musculinus. Mean expected heterozygosity in three natural populations ranged from 0.206 to 0.220. Allele frequency based and phenotype based measures of genetic differentiation among natural populations of C. musculinus gave similar results (Weir an Cockerham's q = 0.133; Excoffier et al.'s f=0.127). These values were considerably higher than those found previously using allozymes as genetic markers, and are compatible with moderate to low levels of gene flow among populations.