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Technical Report 
Organotins in the organisms collected in and around eelgrass beds in Koajiro Bay and Moroiso Bay, Miura Peninsula in the summer of 1990 
Fukao, R 
BIOSIS COPYRIGHT: BIOL ABS. In the summer of 1990, samplings were made on organisms in and around the eelgrass beds of Koajiro Bay and Moroiso Bay, where the waters were suspected to be severely contaminated by organotins from antifouling paints on recreational boat hulls. The concentrations of tributyltin (TBT), triphenyltin (TPT) and their degradation products, dibutyltin (DBT), monobutyltin (MBT), diphenyltin (DPT), and monophenyltin (MPT), in the samples of some selected organisms were determined to get some insight into their dynamics through coastal organisms including those of eelgrass ecosystems. Concentrations of butyltin compounds in most of animals on the higher trophic levels such as conger eels were lower than those in key industry animals of zooplankton and detritus at the base of a food chain, suggesting that biomagnification through food web did not so intensively operate in the accumulation of butyltins. The pollutant TBT taken up by eelgrass or adsorbed by detritus, on the other