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Composition and density of bacterial biofilms determine larval settlement of the polychaete Hydroides elegans
| Content Provider | Semantic Scholar |
|---|---|
| Author | Huang, Shuyi Hadfield, Michael G. |
| Copyright Year | 2003 |
| Abstract | Larvae of the polychaete worm Hydroides elegans settle and metamorphose in response to marine biofilms. Phylogenetic relationships among 4 marine-biofilm bacterial species identified by 16S rDNA sequences were not predictive of their inductive capacity. Two bacterial species separated by a genetic distance of 30% shared the greatest capacity for inducing metamorphosis in H. elegans. Two bacterial strains with only a 3% divergence in 16S rRNA gene sequences were very different; one strain induced metamorphosis strongly while the other one did not. The percent of larvae that metamorphosed correlated positively with bacterial density in either natural biofilms or biofilms com- posed of a single bacterial species. When results of tests across 4 bacterial species were compared, the most inductive bacterial species was effective in much lower biofilm densities than weakly or non-inductive bacteria. Evidence presented here indicates that the cue that triggers settlement and metamorphosis in larvae of H. elegans is not unique to a single bacterial taxon and is likely to be an insoluble, surface-bound material. |
| Starting Page | 161 |
| Ending Page | 172 |
| Page Count | 12 |
| File Format | PDF HTM / HTML |
| DOI | 10.3354/meps260161 |
| Volume Number | 260 |
| Alternate Webpage(s) | https://www.int-res.com/articles/meps2003/260/m260p161.pdf |
| Alternate Webpage(s) | https://doi.org/10.3354/meps260161 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
