Watenpaugh D E, Beitinger T L
Comp Biochem Physiol C Comp Pharmacol Toxicol. 1985;80(2):253-6. doi: 10.1016/0742-8413(85)90051-9.
Following determination of a concentration of selenate-Se lethal during 24-hr exposures at 22 degrees C, routine oxygen consumption was measured in fathead minnows (Pimephales promelas) exposed to various sublethal concentrations of Se for 24 hr. A median lethal concentration for 24-hr exposures (24-hr LC50) of fathead minnows equalled 82 mg Se/l with 95% fiducial limits of 76-89 mg Se/l. Mean weight-specific oxygen consumption rates of minnows exposed to 0, 15, 40 and 60 mg Se/l for 24-hr ranged from 0.43 to 0.49 mg O2/g-1/hr-1 and were not significantly different. These results indicate that acute exposure to Se does not affect oxygen consumption; however, observations during respirometry trials suggest that minnows at the highest Se concentration may have physiologically compensated to maintain oxygen consumption rates.
在确定22摄氏度下24小时暴露期间致死的硒酸盐 - 硒浓度后，对暴露于各种亚致死浓度硒24小时的黑头呆鱼（Pimephales promelas）进行常规耗氧量测量。黑头呆鱼24小时暴露（24小时LC50）的半数致死浓度等于82毫克硒/升，95%置信限为76 - 89毫克硒/升。暴露于0、15、40和60毫克硒/升24小时的呆鱼的平均体重特异性耗氧率在0.43至0.49毫克O2/克-1/小时-1之间，且无显著差异。这些结果表明，急性暴露于硒不会影响耗氧量；然而，呼吸测量试验期间的观察表明，处于最高硒浓度的呆鱼可能已进行生理代偿以维持耗氧率。
