...Tatjana M. Hildebrandt; Manfred K. Grieshaber SUMMARY Sulfide oxidation in the lugworm, Arenicola marina (L.), is most likely localized in the mitochondria, which can either produce ATP with sulfide as a substrate or detoxify it via an alternative oxidase. The present study identified selective...

...Martina Keller; Angela Maria Sommer; Hans O. Pörtner; Doris Abele SUMMARY The influence of seasonal and acute temperature changes on mitochondrial functions were studied in isolated mitochondria of the eurythermal lugworm Arenicola marina (Polychaeta), with special emphasis on the interdependence...

...Stephanie E. Wohlgemuth; Alan C. Taylor; Manfred K. Grieshaber ABSTRACT We examined the effects of hypoxia and sulphide levels on the ventilatory activity of Arenicola marina and determined whether ventilation compensates for oxygen deficiency and affects the mode of energy provision. A. marina...

...Kerstin Hauschild; Wolf-Michael Weber; Wolfgang Clauss; Manfred K. Grieshaber ABSTRACT Thiosulphate, the main sulphide detoxification product, is accumulated in the body fluids of the lugworm Arenicola marina . The aim of this study was to elucidate the fate of thiosulphate. Electrophysiological...

...Susanne Völkel; Manfred K. Grieshaber ABSTRACT Oxygen consumption, ATP production and cytochrome c oxidase activity of isolated mitochondria from body-wall tissue of Arenicola marina were measured as a function of sulphide concentration, and the effect of inhibitors of the respiratory complexes...

...A. A. Pacey; J. C. Cosson; M. G. Bentley ABSTRACT Sperm activation in the polychaete annelid Arenicola marina was investigated using video microscopy following the in vitro and in vivo manipulation of gametes. Careful observation of spermatozoa obtained from spawning animals indicated...

...A. A. Pacey; M. G. Bentley ABSTRACT Spawning of the lugworm Arenicola marina (L.) (Annelida: Polychaeta) occurs in both sexes following the release of a sex-specific maturation hormone from the prostomium. In males this has been termed sperm maturation factor (SMF). Chromatographic purification...

...André Toulmond; Catherine Tchernigovtzeff ABSTRACT The time course of variation in blood acid-base balance was examined in lugworms, Arenicola marina (L.), experimentally acclimated for up to 72 h in hypoxic (1 mmHg = 133-3 Pa), normoxic ) or hyperoxic sea water. In hyperoxic animals, a blood...