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.

Background: Next-generation sequencing has opened new avenues for studying metabolic capabilities of bacteria that cannot be cultured. Here, we provide a metagenomic description of chemoautotrophic gammaproteobacterial symbionts associated with Thyasira

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.

A new thyasirid bivalve, Thyasira inadai n. sp., is described from the Japan Sea. This species lives in the Japan Sea and Yellow Sea and can be separated from the relatively shallower-water dwelling T. tokunagai Kuroda & Habe, 1951 by having a larger