Monday, December 22, 2008

We're Resubmitting Kris' Mummichog DNA Samples

Kris has re-done and re-shipped his mummichog DNA PCR products back to MC Labs in San Diego. His first shipment went UPS Surface, which took 6 days to get there(!). The resulting product wasn't quite usable. So, he re-did the PCR yesterday and today, and is shipping it to MC Labs via USPS Overnight. Hopefully this will make a difference so that he has a last set of DNA sequences for his thesis that will make a better story.

A new issue of Southeastern Naturalist just came out. It has an interesting article by Anna George et al., "The Population Genetics of the Blue Shiner, Cyprinella caerulea". The blue shiner is a federally listed Threatened species found in parts of the upper Coosa River system in AL, GA and TN. Looking at the mitochondrial ND gene they found that the remaining populations of blue shiner are genetically distinct, not to the point of being different species but enough to show a history of isolation. This is what I think we'll find with stippled studfish once we get our DNA samples sequenced. Anyway, this article is in Vol. 7, No. 4, pp. 637-650 of Southeastern Naturalist.

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