[1] CIATEJ, Environm Technol, Guadalajara, Jalisco, Mexico
[2] Univ Calif Davis, Bodega Marine Lab, Bodega Bay, CA USA
[3] Univ Calif Berkeley, Chem, Berkeley, CA 94720 USA
[4] Ludwig Maximilians Univ Munchen, Chem & Pharm, Munich, Germany
[5] Univ Calif Davis, Environm Toxicol & Nutr, Davis, CA 95616 USA