Abstract
An assay for the adhesion of Amphora coffeaeformis (Bacillariophyceae) to glass is described. Ca2+ and Sr2+ promoted adhesion, but Ba2+ and Mn2+ were ineffective. Adhesion was inhibited by cycloheximide, carbonyl cyanide 3-chlorophenyl hydrazone, and α-isopropyl-α-[(N-methyl-N-homoveratryl)-γ-amino- propyl]-3,4,5-trimethyoxy phenyl acetonitrile (D-600), but not by 3-(3,4-dichlorophenyl)-1, 1-dimethyl urea or darkness. The assay has potential use in comparing chemical antifoulants.