1. Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA 95616, USA.
2. Department of Biology, University of Washington, Seattle, WA 98195, USA.
3. eScience Institute, University of Washington, Seattle, WA 98195, USA.
4. Department of Zoology and Physiology and Program in Ecology, University of Wyoming, Laramie, WY 82071, USA.