[1] UNIV TOKYO,BIOCHEM RES LAB,OCEAN RES INST,TOKYO 113,JAPAN
[2] BIOL STN,ROSCOFF,FRANCE
[3] DALHOUSIE UNIV,DEPT OCEANOG,HALIFAX B3H 4H2,NS,CANADA
[4] UNIV CALIF SAN DIEGO,SCRIPPS INST OCEANOG,DIV MARINE RES,LA JOLLA,CA 92093
[5] UNIV MALAGA,DEPT ECOL,MALAGA,SPAIN