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The presence of putative sulphur-oxidizing bacteria colonizing the periostracal secretion in the endosymbiont-bearing bivalve Loripes lucinalis

Published online by Cambridge University Press:  26 November 2001

M.A. Johnson  and
C. Fernandez
M.A. Johnson
Affiliation:
EqEL, UFR Sciences, BP 52, 20250 Corte, France, E-mail: atalarmin@aol.com
C. Fernandez
Affiliation:
EqEL, UFR Sciences, BP 52, 20250 Corte, France, E-mail: atalarmin@aol.com
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Abstract

Loripes lucinalis, a small bivalve belonging to the Lucinacea superfamily living in reducing coastal sediments, possesses chemoautotrophic sulphur-oxidizing bacteria in its gill. Here, a population of putative sulphur-oxidizing bacteria is described colonizing the bivalve's inner periostracal secretion. The bacteria were particularly abundant in the vicinity of the anterior and posterior inhalant syphons. Most of the bacteria observed were oval to rod-shaped and measured 3·9±1·2 μm on average. Histology and negative transmission electron microscopy staining revealed that these bacteria contain refractile spherules similar to those seen in the endocellular gill symbionts of L. lucinalis.

Type
Short Communications
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 81 , Issue 5 , October 2001 , pp. 893 - 894
Copyright
2001 Marine Biological Association of the United Kingdom

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