The bivalve Thyasira cf. gouldi hosts chemoautotrophic symbiont populations with strain level diversity.

ABSTRACT: Invertebrates from various marine habitats form nutritional symbioses with chemosynthetic bacteria. In chemosynthetic symbioses, both the mode of symbiont transmission and the site of bacterial housing can affect the composition of the symbiont population. Vertically transmitted symbionts, as well as those hosted intracellularly, are more likely to form clonal populations within their host. Conversely, symbiont populations that are environmentally acquired and extracellular may be more likely to be heterogeneous/mixed within host individuals, as observed in some mytilid bivalves. The symbionts of thyasirid bivalves are also extracellular, but limited 16S rRNA sequencing data suggest that thyasirid individuals contain uniform symbiont populations. In a recent study, Thyasira cf. g

SUBMITTER: McCuaig B 

PROVIDER: S-EPMC5533157 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature