Tolerance to low oxygen and sulfide in Amphiura filiformis and Ophiura albida (Echinodermata: Ophiuroidea)
Vistisen, B.; Vismann, B. (1997). Tolerance to low oxygen and sulfide in Amphiura filiformis and Ophiura albida (Echinodermata: Ophiuroidea). Mar. Biol. (Berl.) 128(2): 241-246. https://dx.doi.org/10.1007/s002270050088
In: Marine Biology: International Journal on Life in Oceans and Coastal Waters. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793, meer
|  |
| Trefwoorden |
Anoxic conditions
Aquatic organisms > Marine organisms > Aquatic animals > Marine invertebrates
Chemical elements > Nonmetals > Atmospheric gases > Oxygen > Dissolved gases > Dissolved oxygen
Depletion > Oxygen depletion
Diseases > Human diseases > Hypoxia
Properties > Biological properties > Tolerance
Sulphides
Survival
Amphiura filiformis (O.F. Müller, 1776) [WoRMS]; Echinodermata [WoRMS]; Ophiura albida Forbes, 1839 [WoRMS]; Ophiuroidea [WoRMS]
Marien/Kust |
| Abstract |
The brittle stars Amphiura filiformis and Ophiura albida were exposed to different oxygen saturations (100, 10, 5, 3, and <1% oxygen saturation) and to physiological anoxia (<1% oxygen saturation) at different total sulfide concentrations (0, 2, 20, 200 mu M). The mortality was followed during experiments and the median survival time (LT50)) was determined. The infaunal A. filiformis had a significantly higher tolerance to both hypoxia and sulfide than did the epibenthic O. albida. After exposure to 10% oxygen saturation or a month, only 2.0% A. filiformis and 0% O. albida were dead. In oxygen saturations <1% A. filiformis and O. albida had a LT50 of 7.5 and 2.5 d, respectively. The presence of even very small concentrations of sulfide decreased the survival significantly. Sulfide is shown to be the key factor for the survival of the two species. |
|
