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The Control of Respiration and Circulation in Fish During Exercise and Hypoxia
Gas exchange across fish gills is reviewed and the respiratory and cardio-vascular changes associated with exercise and hypoxia described. Heart rate is controlled by inhibitory vagal cholinergicExpand
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NaCl uptake by the branchial epithelium in freshwater teleost fish: an immunological approach to ion-transport protein localization.
Teleost fishes, living in fresh water, engage in active ion uptake to maintain ion homeostasis. Current models for NaCl uptake involve Na(+) uptake via an apical amiloride-sensitive epithelial Na(+)Expand
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Immunolocalization of ion-transport proteins to branchial epithelium mitochondria-rich cells in the mudskipper (Periophthalmodon schlosseri).
The branchial epithelium of the mudskipper Periophthalmodon schlosseri is densely packed with mitochondria-rich (MR) cells. This species of mudskipper is also able to eliminate ammonia against largeExpand
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The effect of sub-lethal ammonia exposure on fed and unfed rainbow trout: the role of glutamine in regulation of ammonia.
Many species of fishes have evolved mechanisms for coping with ammonia caused by either high ammonia environments or an inability to excrete nitrogenous wastes. Rainbow trout (Oncorhynchus mykiss),Expand
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The effect of hypoxia upon the partial pressure of gases in the blood and water afferent and efferent to the gills of rainbow trout.
1. The rate of oxygen uptake by rainbow trout does not alter during progressive deoxygenation of the environment. Blood lactate, however, shows a significant increase, indicating an increase inExpand
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Oxygen uptake and transport during hypoxic exposure in the sturgeon Acipenser transmontanus.
Gill ventilation, stroke volume and frequency, %O2 utilization and oxygen uptake, and dorsal aortic blood oxygen tension, content, pH and oxygen affinity have been determined during normoxia andExpand
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The effect of feeding and fasting on ammonia toxicity in juvenile rainbow trout, Oncorhynchus mykiss.
Present fresh water ammonia standards have been established using data collected from toxicity tests on unfed fish. Ammonia, however, is an unusual toxicant as it is produced as a metabolic wasteExpand
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Oxygen and carbon dioxide exchange during exercise in the land crab (Cardisoma carnifex)
In Cardisoma carnifex exercised on a treadmill, there is an inverse relationship between velocity and log fatigue time; crabs run indefinitely at 0.2 body lengths/second, for ≃5 minutes at 0.5Expand
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Changes of gas concentrations in blood and water during moderate swimming activity in rainbow trout.
1. Changes in partial pressures of O 2 and CO 2 in blood and water afferent and efferent to the gills are reported. These variables were measured before, during and after moderate swimming activityExpand
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The role of catecholamines in erythrocyte pH regulation and oxygen transport in rainbow trout (Salmo gairdneri) during exercise.
Rainbow trout were subjected to burst swimming to exhaustion followed by 4 h aerobic swimming at 80% critical swimming velocity. Severe physiological disturbances, including a marked plasma acidosisExpand
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