Shallow gene pools in the high intertidal: extreme loss of genetic diversity in viviparous sea stars (Parvulastra).
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ABSTRACT:
SUBMITTER: Keever CC
PROVIDER: S-EPMC3971698 | biostudies-literature | 2013 Oct
REPOSITORIES: biostudies-literature
Publications
Shallow gene pools in the high intertidal: extreme loss of genetic diversity in viviparous sea stars (Parvulastra).
Keever Carson C CC Puritz Jonathan B JB Addison Jason A JA Byrne Maria M Grosberg Richard K RK Toonen Robert J RJ Hart Michael W MW
Biology letters 20130807 5
We document an extreme example of reproductive trait evolution that affects population genetic structure in sister species of Parvulastra cushion stars from Australia. Self-fertilization by hermaphroditic adults and brood protection of benthic larvae causes strong inbreeding and range-wide genetic poverty. Most samples were fixed for a single allele at nearly all nuclear loci; heterozygotes were extremely rare (0.18%); mitochondrial DNA sequences were more variable, but few populations shared ha ...[more]
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