Distinct physiological strategies are used to cope with constant hypoxia and intermittent hypoxia in killifish (Fundulus heteroclitus).

Mitochondrial physiology and reactive oxygen species production are altered by hypoxia acclimation in killifish (Fundulus heteroclitus).

Many fish encounter hypoxia in their native environment, but the role of mitochondrial physiology in hypoxia acclimation and hypoxia tolerance is poorly understood. We investigated the effects of hypoxia acclimation on mitochondrial respiration, O2kinetics, emission of reactive oxygen species (ROS), and antioxidant capacity in the estuarine killifish ( ITALIC! Fundulus heteroclitus). Killifish ...

Warm acclimation improves hypoxia tolerance in Fundulus heteroclitus.

Human activities are increasing both the frequency of hypoxic episodes and the mean temperature of aquatic ecosystems, but few studies have considered the possibility that acclimation to one of these stressors could improve the ability to cope with the other stressor. Here, we used Atlantic killifish, Fundulus heteroclitus, to test this hypothesis. Hypoxia tolerance was measured as time to loss...

Structure and sequence conservation of a putative hypoxia response element in the lactate dehydrogenase-B gene of Fundulus.

Many aquatic habitats are characterized by periodic or sustained episodes of low oxygen concentration, or hypoxia, and organisms that survive in these habitats do so by utilizing a suite of behavioral, physiological and biochemical adjustments to low oxygen (1-3). In the killifish Fundulus heteroclitus, one response to prolonged exposure to hypoxia is an increase in the activity of lactate dehy...

Comparing Methods of Euthanasia and Gill Culture for Hypoxia Research on the Gulf Killifish, Fundulus grandis

SHORT COMMUNICATION Electrical aspects of the osmorespiratory compromise: TEP responses to hypoxia in the euryhaline killifish (Fundulus heteroclitus) in freshwater and seawater

The osmorespiratory compromise, the trade-off between the requirements for respiratory and ionoregulatory homeostasis at the gills, becomes more intense during environmental hypoxia. One aspect that has been previously overlooked is possible change in transepithelial potential (TEP) caused by hypoxia, whichwill influence branchial ionic fluxes. Using the euryhaline killifish, we show that acute...