Exploring Demographic, Physical, and Historical Explanations for the Genetic Structure of Two Lineages of Greater Antillean Bats

摘要: Observed patterns of genetic structure result from the interactions demographic, physical, and historical influences on gene flow. The particular strength various factors in governing flow, however, may differ between species biologically relevant ways. We investigated role demographic (population size sex-biased dispersal) physical features (geographic distance, island climatological winds) flow for two lineages Greater Antillean bats. used microsatellite data to estimate characteristics, infer population structure, among populations Erophylla sezekorni/E. bombifrons Macrotus waterhousii (Chiroptera: Phyllostomidae). Using a landscape genetics approach, we asked if geographic size, or winds mediate this system. Samples 13 islands spanning Erophylla's range clustered into five genetically distinct populations. M. eight represented While found evidence that majority was asymmetric both lineages, were not able entirely rule out incomplete lineage sorting generating pattern. no contemporary except Erophylla. Both exhibited significant isolation by distance. Patterns explained differences relative effective sizes, area, dispersal (tested only Erophylla), surface-level winds. Gene appears be highly restricted, particularly waterhousii, suggest deserves increased taxonomic attention conservation concern.