1. Department of Animal Science; University of California; One Shields Avenue Davis CA 95616 USA
2. Ecological Sciences Research Laboratories; Department of Biology; Hacettepe University; Beytepe 06800 Ankara Turkey
3. Center for Watershed Sciences; University of California; One Shields Avenue Davis CA 95616 USA
4. Abernathy Fish Technology Center; U.S. Fish and Wildlife Service; 1440 Abernathy Creek Road Longview WA 98632 USA
5. Pacific Southwest Region; U.S. Fish and Wildlife Service; 2800 Cottage Way W-2606 Sacramento CA 95825 USA