1. Department of Biological Sciences, California State University, Los Angeles, CA, USA
2. Department of Mathematics, Andrews University, Berrien Springs, MI, USA
3. Department of Biology, Andrews University, Berrien Springs, MI, USA
4. Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, USA
5. Department of Fish and Wildlife Sciences, University of Idaho, Moscow, ID, USA
6. Department of Mathematics and Statistical Science, University of Idaho, Moscow, ID, USA