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Population Genetics Of Amphiuma Means And Siren Lacertina In Central Florida, Anna C. Deyle
Population Genetics Of Amphiuma Means And Siren Lacertina In Central Florida, Anna C. Deyle
USF Tampa Graduate Theses and Dissertations
Population structure can be defined as a difference in the frequencies of alleles among populations, and it is often caused by barriers to dispersal. I used mitochondrial DNA sequences to examine the population structure of two large, aquatic salamanders, Amphiuma means (the Two-Toed Amphiuma) and Siren lacertina (the Greater Siren), at two spatial scales in peninsular Florida. Both species appear to have similar life histories, including poor dry land dispersal capabilities, and I hypothesized that they would exhibit significant population structure at both broad and fine scales. Wetland loss and landscape fragmentation are certain to have caused decreases in abundance …