[1] Univ Maryland, Ctr Marine Biotechnol, Inst Biotechnol, Columbus Ctr, Baltimore, MD 21202 USA
[2] Woods Hole Oceanog Inst, Dept Biol, Woods Hole, MA 02543 USA
[3] Univ Barcelona, Dept Ecol, E-08028 Barcelona, Catalunya, Spain
[4] PCB Univ Barcelona, Climat Res Grp, E-08028 Barcelona, Catalunya, Spain
[5] Cornell Univ, Dept Ecol & Evolutionary Biol, Ithaca, NY 14853 USA
[6] Univ Maryland, Dept Cell & Mol Biol, College Pk, MD 20742 USA
[7] Univ London London Sch Hyg & Trop Med, Dept Infect & Trop Dis, London WC1E 7HT, England