Geographic patterns of clonal diversity in the earth mite species Penthaleus major with particular emphasis on species margins

Abstract

Patterns of clonal diversity in parthenogenetic species can be influenced by occasional sexual reproduction, selection due to environmental heterogeneity, and genetic drift. Here we investigate geographic patterns of clonal diversity in the obligate parthenogenetic earth mite species, Penthaleus major, in southeastern Australia. Spatial autocorrelation analysis indicated a relationship between geographic distance and clonal diversity at the sites. However, there was no evidence for an association between distance and clonal composition or the frequency of the two most common clones. Regression analyses indicated that clonal diversity and the frequency of one of the common clonal groups were ..