1. Biological Sciences; University of Texas at Brownsville; One West University Boulevard-LHSB 2.816 Brownsville TX 78520 USA
2. Great Lakes Institute for Environmental Research; University of Windsor; 401 Sunset Ave. Windsor Ontario Canada N9B 3P4
3. Glenora Fisheries Station; Ontario Ministry of Natural Resources and Forestry; 41 Hatchery Lane Picton Ontario Canada K0K 2T0
4. Aquatic Ecology Laboratory; Department of Evolution, Ecology and Organismal Biology; The Ohio State University; 1314 Kinnear Road 222 Research Center Columbus OH 43212 USA