Structural and Kinetic Characterization of Myoglobins from Eurythermal and Stenothermal Fish Species By
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Structural and kinetic characterization of myoglobins from eurythermal and stenothermal fish species.
Teleost myoglobin (Mb) proteins from four fish species inhabiting different temperature environments were used to investigate the relationship between protein function and thermal stability. Mb was isolated from yellowfin tuna (homeothermal warm), mackerel (eurythermal warm), and the Antarctic teleost Notothenia coriiceps (stenothermal cold). Zebrafish (stenothermal tropical) myoglobin was expr...
متن کاملTranscriptomic responses to environmental temperature in eurythermal and stenothermal fishes.
Ectothermic species like fishes differ greatly in the thermal ranges they tolerate; some eurythermal species may encounter temperature ranges in excess of 25°C, whereas stenothermal species in polar and tropical waters live at essentially constant temperatures. Thermal specialization comes with fitness trade-offs and as temperature increases due to global warming, the physiological basis of spe...
متن کاملTemperature-dependent pH regulation in eurythermal and stenothermal marine fish: an interspecies comparison
Temperature-induced pH changes in white muscle tissue of three eelpout populations with different levels of eurythermy (the cold stenothermal Antarctic species Pachycara brachycephalum and the temperate eelpout Zoarces viviparus from the North Sea and the Baltic Sea) were monitored online by use of in vivo P-NMR in unrestrained, unanaesthetized fish. An intracellular pH (pHi) change of around 0...
متن کاملThermal acclimation effects differ between voluntary, maximum, and critical swimming velocities in two cyprinid fishes.
Temperature acclimation may be a critical component of the locomotor physiology and ecology of ectothermic animals, particularly those living in eurythermal environments. Several studies of fish report striking acclimation of biochemical and kinetic properties in isolated muscle. However, the relatively few studies of whole-animal performance report variable acclimation responses. We test the h...
متن کاملEffects of Temperature on Auditory Sensitivity in Eurythermal Fishes: Common Carp Cyprinus carpio (Family Cyprinidae) versus Wels Catfish Silurus glanis (Family Siluridae)
BACKGROUND In ectothermal animals such as fish, -temperature affects physiological and metabolic processes. This includes sensory organs such as the auditory system. The reported effects of temperature on hearing in eurythermal otophysines are contradictory. We therefore investigated the effect on the auditory system in species representing two different orders. METHODOLOGY/PRINCIPAL FINDINGS...
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تاریخ انتشار 2004