Daphnia as an Emerging Model for Toxicological Genomics 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 J. R. Shaw 1 , M. E. Pfrender 2 , B. D. Eads 3 , R. Klaper 4 , A. Callaghan 5 , I. Colson 6 , D. Gilbert 3 , J. K. Colbourne 7 1 Department of Biology and Center for Environmental Health Sciences, Dartmouth College, Hanover, New Hampshire 03755 USA, email joseph.r.shaw@Dartmouth.EDU 2 Department of Biology, Utah State University, 5305 Old Main Hill Road, Logan, Utah 84322 USA, email pfrender@biology.usu.edu 3 Department of Biology, Indiana University, Bloomington, Indiana 47405 USA, emails bdeads@indiana.edu, gilbertd@indiana.edu 4 Great Lakes WATER Institute, University of Wisconsin-Milwaukee, 600 East Greenfield Ave, Milwaukee, Wisconsin 53204 USA, email rklaper@uwm.edu 5 School of Animal and Microbial Sciences, University of Reading, PO Box 228, Reading RG6 6AJ UK, email a.callaghan@reading.ac.uk 6 Zoologisches Institut, Universität Basel, Biozentrum/Pharmazentrum, Klingelbergstrasse 50, 4056 Basel Switzerland, email isabelle.colson@unibas.ch 7 Center for Genomics and Bioinformatics, Indiana University, Bloomington, Indiana 47405 USA, email jcolbour@cgb.indiana.edu 1