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Solemyidae : ウィキペディア英語版
Solemyidae

Solemyidae is a family of saltwater clams, marine protobranch bivalve mollusks in the order Solemyoida.〔Powell A. W. B., ''New Zealand Mollusca'', William Collins Publishers Ltd, Auckland, New Zealand (1979) ISBN 0-00-216906-1〕
==Biology==
Solemyids are remarkable in that their digestive tract is either extremely small or non-existent, and their feeding appendages are too short to reach outside the shell.〔Reid R. G. B. (1989) The unwhole organism. (American Zoologist 29:1133-1140 )〕
It has been shown that these clams host sulphur-oxidizing bacteria intracellularly within their gill filaments. As chemoautotrophs, these bacterial symbionts synthesize organic matter from CO2 and are the primary source of nutrition for the whole organism.〔Cavanaugh C. M., Abbott M. S., Veenhuis M. (1988) Immunochemical localization of ribulose-1,5-bisphosphate carboxylase in the symbiont-containing gills of Solemya velum (Bivalvia, Mollusca). (PNAS 85:7786–7789 )〕〔Stewart F. J., Cavanaugh, C. M. (2006) Bacterial endosymbioses in Solemya (Mollusca: Bivalvia) – Model systems for studies of symbiont-host adaptation. (Antonie van Leeuwenhoek 90: 343-360 )〕 In turn, the animal host provides its symbionts a habitat in which they have access to the substrates of chemoautotrophy (O2, CO2, and reduced inorganic compounds such as H2S). Together, these partners create "animals" with novel metabolic capabilities.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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