A More Refined Analysis Of 11-KT Experiment Data

I think I figured out the best way to analyze any influence of our experimental exposure of scarlet shiners to 11-KT. We compared the weights of 9 fish that were exposed, all under 60 mm long, to the weights of 42 wild-caught fish from Enrique's data set that were all under 60 mm long. Using an F-test to test the two data sets for homogeneity of variances, we found a statistically significant lack of homogeneity. So we used the nonparametric Mann-Whitney U-test to test the two data sets for similarity of distribution. The U-test showed that the two data sets are significantly different with p=0.04. It's not a really surprising result that fish exposed to a potent androgen like 11-KT would be heavier. The interesting thing is that we achieved this by exposing fish to it by ambient exposure in the water rather than by injecting it. I'm happy with the results since this has been a pilot project for something longer in duration and more ambitious in scope. Brittany has also been measuring the brains of our 11-KT fish, and if they turn out to be measurably different from unexposed fish I'll be doubly happy.

My editor at Endangered Species Research sent me his comments on the flame chub article. He likes it, and offered some constructive editorial suggestions. Now I have to get it back out with all figures and tables. The big challenge will be putting together a good map or two. Kevin says he's still interested in producing maps, so I have to meet with him sometime soon.