Genetic isolation by distance patterns in <i>Rattus rattus</i> populations of the four areas.

<p>Relationships (the regression line is shown only when significant) between pairwise Euclidean geographic distance between subpopulations and genetic differentiation, estimated as <i>F</i><sub>ST</sub>/(1-<i>F</i><sub>ST</sub>). (A) Moramanga, plateau area; (B) Mandoto, plateau area; (C) Betafo, mountainous area; (D) Ambositra, mountainous area.</p>