Settlement inhibition of bryozoan larvae by bacterial films and aqueous leachates

摘要

Six strains of marine bacteria were isolated from benthic algal films and subtidal rocks. Films and aqueous leachates of isolates were tested for effects on larval attachment of Bugula neritina (Linnaeus) in three experiments. Confluent films of four bacterial iso- Lates significantly inhibited larval attachment of B. Neritina. A fifth isolate inhibited B. Neritina attachment in two of three experiments, while the sixth isolate had no effect on Attachment of B. Neritinal larvae. Results of additional experiments employing Petri dishes Filmed by bacteria on one half of the dish bottom suggest both soluble and surface film Factors are involved in mediating larval settlement.