Sulfide-stimulation of oxygen consumption rate and cytochrome reduction in gills of the estuarine mussel Geukensia demissa.

The Biological Bulletin | December 1, 1996| | Copyright

Introduction

Hydrogen sulfide is common in marine reducing environments such as anoxic sediments, sewage sludge outfalls, deep-sea hydrothermal vents, and cold seeps. Because sulfide (the sum of [H.sub.2]S, H[S.sup.-], and [S.sup.=] unless otherwise specified) is a potent inhibitor of mitochondrial cytochrome oxidase (Nicholls, 1975; Wilson and Erecinska, 1978; National Research Council, 1979) and can render hemoglobin nonfunctional through the formation of sulfhemoglobin (Berzofsky et al., 1971; Carrico et al., 1978), it is potentially toxic to a variety of aerobic ...

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