Settlement Inhibition of Bryozoan Larvae by Bacterial Films and Aqueous Leachates
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 isolates 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. neritina 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. Aqueous extracts of two bacterial strains inhibited bryozoan settlement in each of the three replicate assays and were toxic to larvae. A final series of experiments tested paired bacterial films and leachates for direct comparisons. For certain isolates, the film inhibited settlement and the water solubleleachate had no effect on settlement. Other isolates displayed opposite results. These results suggest both surface properties and water-soluble compounds released from bacterial films are responsible for settlement inhibition.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: 1997-11-01
More about this publication?
- The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Terms & Conditions
- Ingenta Connect is not responsible for the content or availability of external websites