Mote Marine Laboratory red tide studies. Final report July 1, 1998 through May 30, 1999.

Abstract

The research performed in this project specifically addresses red tide effect on the manatee, considering the various neurotoxins produced by Gymnodinium breve (G.breve), and bacteria associated with coastal red tide blooms in Florida Gulf of Mexico waters. The distribution of red tide toxins in the water and in association with marine aerosol was investigated to assess ways that manatees are exposed to the toxins. Factors controlling development of natural red tide blooms were also investigated, including water quality, biological and hydrological data to develop a model for testing hypotheses regarding red tide bloom dynamics leading toward prediction and response strategies. Activities included laboratory culture maintenance of G. breve to provide a consistent supply of the organism, and toxins and pigments for experimentation. Monthly sampling was conducted. The study also continued to develop and test a spectral detector for sensing red tide development and movement.