Allozyme variation in the endangered insular endemic Castilleja grisea.

ABSTRACT:

Background and aims

Genetic diversity in Castilleja grisea, an endangered, perennial herb endemic to San Clemente Island, California was investigated. Subsequent to the elimination of goats from the island in 1992, many populations of C. grisea have reappeared and have been increasing in size.

Methods

Nineteen populations were surveyed for their genotype at 19 allozyme loci.

Key results

At the taxon level, 57.9 % of loci are polymorphic with A(P) = 3.09 and H(E) = 0.137. Populations averaged 33.0 % polymorphic loci with A(P) = 2.43 and H(E) = 0.099. Most variation is found within rather than among populations (G(ST) = 0.128), although differentiation among populations is significant. Genetic identities range from I = 0.960 to I = 1.000 with mean I = 0.990. There is no

SUBMITTER: Helenurm K 

PROVIDER: S-EPMC4246907 | biostudies-literature | 2005 Jun

REPOSITORIES: biostudies-literature