1 Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, USA. paulbarber@ucla.edu.
2 Department of Integrative Biology, Museum of Vertebrate Zoology, Group in Endocrinology, Molecular Toxicology, and Energy and Resources Group, University of California, Berkeley, CA 94720, USA.
3 Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, CA 90095, USA.
4 Department of Biology, Health and Equity Research Laboratory, San Francisco State University, San Francisco, CA 94132, USA.