Abstract

Abstract Mountain Plover (Charadrius montanus) is a species of conservation concern that has experienced significant habitat loss and population decline. This, coupled with previous observations that the species exhibits strong fidelity to breeding grounds, suggests that breeding populations may be genetically differentiated and possibly suffer from reduced genetic variation associated with relatively small population sizes. A previous genetic study comparing mitochondrial DNA sequences of plovers in Montana and Colorado found high levels of genetic variability and very little genetic differentiation among breeding locales. Because mitochondrial DNA can track only female movements and is sampled from only one locus, we used 14 nuclear microsatellite loci to further examine population structure, thereby both documenting male movements and providing a more comprehensive view of genetic structure. We found no significant differences among breeding populations. The most likely number of unique genetic cluster...

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