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1. Vaughn | April 30th, 2008 at 9:47 pm
Laura,
Would love your version of a summary on this paper. I too was impressed by it and wish to emphasize that the magnitude of the change in host virulence between past, present, and future parasite isolates on a given set of Daphnia hosts is ~20%, or a change from ~.55 to ~.65. Not a huge amount, but clearly intriguing.
I am curious what is known and what is ongoing to determine the genetic relationships among Pasteuria spores in this pond. They DID find a very low level of Fst among Daphnia clones (.047), suggesting plenty of sexual recombination (supplementary info #3). This means that a new solution to the current parasite is always at hand, which fits the Red Queen, Nevertheless any evidence to suggest that the bacteria themselves changed would certainly be helpful.