Demographic and genetic estimates of effective population and breeding size in the amphibian Rana temporaria.

作者: Dirk S Schmeller , Juha Merilä , None

DOI: 10.1111/J.1523-1739.2006.00554.X

关键词:

摘要: : Genetic methods for estimating effective population size ( Ne) or the number of breeders Nb) have become popular, but comparisons these estimates with demographic Neand Nbare rare, especially in anurans. We used three genetic (linkage disequilibrium, temporal moments, Bayesian coalescent-based method) and models, latter considering breeding individuals, sex ratio, reproductive skew, other data, to estimate Nbin two subarctic populations (T P) common frog Rana temporaria, subject long-term capture–recapture studies. Demographic Nebased on total Ne[T]= 44.5–56.9; Ne[P]= 68.8–93.7) deviated markedly from obtained using linkage disequilibrium method 97.1; 13.2). The Nb, taking into consideration ratio variance success Nb[T]= 10.1–39.7; Nb[P]= 3.9–21.3), were higher than 3.7–5.4; 3.5–3.9). main factors affecting skew. discrepancies between corresponding Nbestimates highlight sensitivity both their underlying assumptions. Yet ratios census similar those reported earlier anurans, reinforcing view that discrepancy actual sizes anuran is typically very large. Resumen: Los metodos geneticos para estimar el tamano poblacional efectivo o numero de reproductores Nr) se han vuelto populares, pero las comparaciones estas estimaciones con demograficas Ney Nrson raras, especialmente en anuros. Utilizamos tres modelos (desequilibrio enlaces, momentos temporales, metodo Bayesiano basado coalescencia) y demograficos que consideraron individuos reproductores, sesgo reproductivo otros datos demograficos, Nren dos poblaciones subarticas la rana comun sujetas a estudios captura recaptura. Las Necon base poblacion fueron marcadamente diferentes obtenidas utilizando desequilibrio enlaces Nrconsiderando proporcion sexos varianza exito 3.9–21.3) mayores geneticas Los principales factores afectaron reproductivo. discrepancias entre Nrcorrespondientes resaltan sensibilidad ambas sus suposiciones fundamentales. Sin embargo, relacion censal fue al reportado anuros previamente, lo refuerza opinion discrepancia es muy grande.

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