1. NOAA‐NMFS, Southwest Fisheries Science Center, P.O. Box 271, La Jolla, CA 92038, U.S.A.
2. Department of Fisheries and Aquatic Sciences, University of Florida, 7922 NW 71st Street, Gainesville FL 32653‐3071, U.S.A.
3. Biology Department, Texas A&M University, College Station, TX 77843, U.S.A.
4. Laboratorio de Tortugas Marinas, Departamento de Biologia, Facultad de Ciencias, UNAM, Circuito Exterior, Ciudad Universitaria, Mexico D.F. 04510, Mexico
5. Department of Animal Sciences, Texas A&M University, College Station, TX 77843, U.S.A.