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Thermal acclimation induces adaptive changes in subcellular structure of fish skeletal muscle.
Stereological analyses of electron micrographs were used to quantify physiologically important ultrastructures of slow-twitch oxidative (red) and fast-twitch glycolytic (white) muscle fibers from… Expand
Biochemical Correlations of Power Development and Metabolic Fuel Preferenda in Fish Hearts
Hearts from 16 species of fishes, including representatives of cyclostomes, elasmobranchs, and teleosts, were examined. As a biochemical index of maximal ATP demand, ATPase activity of crude… Expand
Some Pathways of Energy Metabolism Are Cold Adapted in Antarctic Fishes
Biochemical indices of metabolic cold adaptation were studied in muscular tissues of ecotypically similar Antarctic and Temperate Zone marine fishes. Pairwise comparisons were made between sluggish… Expand
Atlantic hagfish cardiac muscle: metabolic basis of tolerance to anoxia.
Oxygen tensions in the major venous inputs to the systemic and portal-vein hearts of normoxic Atlantic hagfish (12.3 +/- 1.7 and 11.0 +/- 1.6 mmHg, respectively) are low compared with typical… Expand
When bad things happen to good fish: the loss of hemoglobin and myoglobin expression in Antarctic icefishes
SUMMARY The Antarctic icefishes (Family Channichthyidae) provide excellent examples of unique traits that can arise in a chronically cold and isolated environment. Their loss of hemoglobin (Hb)… Expand
The interplay among cardiac ultrastructure, metabolism and the expression of oxygen-binding proteins in Antarctic fishes.
We examined heart ventricle from three species of Antarctic fishes that vary in their expression of oxygen-binding proteins to investigate how some of these fishes maintain cardiac function despite… Expand
Thermal Tolerance of Antarctic Notothenioid Fishes Correlates with Level of Circulating Hemoglobin
The West Antarctic Peninsula region is experiencing some of the most rapid elevations in temperature of any marine environment. We assessed thermal tolerance of white- and red-blooded Antarctic… Expand
Metabolic cold adaptation in Antarctic fishes: evidence from enzymatic activities of brain
Abstract. To evaluate the concept of metabolic cold adaptation (MCA) in fishes, we compared – in brain, red muscle, and white muscle of Antarctic notothenioid fishes and tropical/subtropical fishes –… Expand
Changes in mitochondrial distribution and diffusion distances in muscle of goldfish upon acclimation to warm and cold temperatures
Transmission electron microscopy of myotomal muscle from goldfish (Carassius auratus L.) reveals significant differences in distribution and density of mitochondria in animals acclimated to cold… Expand
Intracellular oxygen diffusion: the roles of myoglobin and lipid at cold body temperature.
- B. Sidell
- Biology, Medicine
- The Journal of experimental biology
- 1 April 1998
Cold temperature can constrain the rate of oxygen movement through muscle cells of ectothermic animals because the kinetic energy of the solvent-solute system decreases and the viscosity of the… Expand