GENETIC DIVERSITY ASSESSMENT IN A METAPOPULATION OF THE BUTTERFLY Euphydryas gillettii
نویسنده
چکیده
Euphydryas gillettii is a Rocky Mountain endemic butterfy distributed in small, widely separated populations, which appear to be declining. This paper presents the results of a genetic diversity assessment within and among E. gdlettii colonies comprising the Glacier National Park (GNP) metapopulation. Four colonies were assayed within GNP during 1988 and 1989, and two outgroups, colonies from Idaho and Wyoming, were also compared with GNP populations for allelic uniqueness and heterogeneity. D%feences between the 1988 and 1989 data suggest that E. gillettii may exist as a biennial population. Minor dfferences were found among GNP populatwnr while larger dzrerences were found among M o n t m , Wyoming and Idaho populationr. Heterozygosity was higher than expected, suggesting a potential selective advantage for heterozygotes. Heterozygosity was also found to be higher in populations that were distributed in a linear space along stream corridors relative to those in meadows. More research should be conducted with respect to dispersal along streams as it appears that these corridors may be signifcant in the maintenance of the
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