title: Genetic and demographic structure in a population of Ctenomys lami (Rodentia-Ctenomyidae).
abstract: The variability at eight microsatellite loci was analyzed in 88 individuals of Ctenomys lami, a species of tuco-tucos. Initially considered as three subpopulations, the estimated Fst values ranged from 0.0007 to 0.0589. Additionally, a Bayesian approach presented probabilities of 0.9933 for the existence of only one population. A Fis value of 0.19 could indicate an incipient structure. Sexual dimorphism was observed. The reproductive period was short and a seasonal pattern was observed with sex ratio of 1:1 during all seasons. Presence of recent bottleneck is described suggesting further research in this population to assess more complete and detailed data.
authors.affiliation: Genetic Department and Graduate Program in Genetics and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre--RS, Brazil.
authors.forename: Tarik A R J
authors.initials: TA
authors.lastname: El Jundi
authors.forename: Thales R O
authors.initials: TR
authors.lastname: De Freitas
mesh_terms: D017677:Age Distribution; D000483:Alleles; D000818:Animals; D001499:Bayes Theorem; D005075:Biological Evolution; D001938:Brazil; D005787:Gene Frequency; D014644:Genetic Variation; D005828:Genetics, Population; D006579:Heterozygote; D007621:Karyotyping; D018895:Microsatellite Repeats; D012098:Reproduction; D012377:Rodentia / Q000235:genetics*; D012621:Seasons; D012727:Sex Characteristics; D012744:Sex Ratio