1. Department of Neurobiology, Physiology and Behavior; University of California, Davis; Davis California 95616 USA
2. Animal Behavior Graduate Group; University of California, Davis; Davis California 95616 USA
3. Institute of Arctic Biology; University of Alaska, Fairbanks; Fairbanks Alaska 99775 USA
4. Department of Biology; University of Ottawa; Ottawa Ontario K1N 9B4 Canada
5. Department of Entomology and Nematology; University of California, Davis; Davis California 95616 USA
6. Center for Population Biology; University of California, Davis; Davis California 95616 USA
7. Department of Environmental Science and Policy; University of California, Davis; Davis California 95616 USA
8. Bodega Marine Laboratory; University of California, Davis; Bodega Bay California 94923 USA
9. Department of Biological Sciences; Virginia Institute of Marine Science; College of William & Mary; Gloucester Point Virginia 23062 USA