Inbreeding And Amphibian Malformations
July 3rd, 2008 | by admin |
We captured 687 adult and 1259 larval tiger salamanders (Ambystoma tigrinum), assessed individuals for gross malformations, and surveyed genetic variation among malformed and normal individuals using both cytoplasmic and nuclear markers.
The overall frequency of adults with malformations was 0.078 compared to 0.081 in larval samples.
Genetic diversity was high in both normal and malformed salamanders, and there were no significant difference in measures of inbreeding, mean individual heterozygosity, or mean internal relatedness.
Environmental contaminants or other extrinsic factors may lead to genome alternations that ultimately cause malformations, but our data indicate that inbreeding is not a causal mechanism.
Royal Society journal Biology Letters
Biology Letters publishes short, innovative and cutting-edge research articles and opinion pieces accessible to scientists from across the biological sciences. The journal is characterised by stringent peer-review, rapid publication and broad dissemination of succinct high-quality research communications.
www.publishing.royalsociety.org/biologyletters
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