Fundulus heteroclitus paper almost ready to go

I've been plugging away at editing Kris' thesis on cytochrome b mitochondrial DNA into journal format, and I think I'm almost there. Below is the current version of the Abstract.

ABSTRACT

The mitochondrial cytochrome b gene from seven populations of the killifish, Fundulus heteroclitus, was examined for single nucleotide polymorphisms and haplotypes. Three populations were from New England, two from Virginia, and one each from South Carolina and Georgia. In the gene sequence of 775 bases examined, 16 SNPs were found which defined an expected distinct northern haplotype. A Virginia haplotype defined by five SNPs was also found, separating them from populations further south. Phylogenetic analysis using Bayesian inference supports a north/south divide. The genetic distance between the three northern populations and the four southern populations was 1.5%. These findings support the hypothesis of post glacial rapid leptokurtic migration of F. heteroclitus to the north from southern refugia ~13,000 years ago. This caused a genetic blockade within the species, leading to the lower genetic diversity found in modern northern populations compared to southern populations.