“…On one hand, Trichodesmium blooms have been credited with causing rapid declines in zooplankton biomass and alterations of fish migration routes [Chen, 19821, while on the other, some oceanic harpacticoid copepods are known to feed on Trichodesmium colonies and 0 1994 Wiley-Las, Inc. such, is in the public domain in the United States of America. *This article is a US Government work and, as utilize them as substrate [Borstad and Borstad, 1977;Bottger-Schnack and Schnack, 1989;O'Neil and Roman, 1992;Roman, 19781. Trichodesmium thiebuutii, while non-toxic to harpacticoid copepods, causes significant mortality to calanoid and cyclopoid copepods and to brine shrimp.…”