... manipulation reduces an individual's ability to forage, avoid predators and grow, thereby limiting the resources available for physiological functions like defence against oxidative stress. Using brown trout ( Salmo trutta ), we evaluated the short-term (2 weeks) and long-term (4 months over winter) effects...

..., as well as repeatability of body mass, in young brown trout ( Salmo trutta L.) fed a moderately restricted diet (0.5–0.7% fish mass day –1 ). Metabolism was estimated from measurements of oxygen consumption rate ( ) and repeatability was evaluated four times across a 15-week period. Individual body mass...

...N. Day; P. J. Butler SUMMARY Adult brown trout ( Salmo trutta ) were acclimatised to and maintained at seasonal temperatures (5°C in winter; 15°C in summer)and acclimated to reversed seasonal temperatures (15°C in winter; 5°C in summer) while exposed to the natural (i.e. seasonally variable...

... ( Salmo trutta ) from two tributaries. No significant relationship between future migratory strategy(individuals eventually becoming migrants or residents) and gill Na + /K + -ATPase activity was found in late February–early March. By contrast, in mid-April, a highly significant logistic regression...

... ( Salmo trutta )acclimated to freshwater. The NO donor sodium nitroprusside (SNP) inhibited in situ Na + /K + -ATPase activity, measured as ouabain-sensitive Rb + uptake, in both samples of kidney and gill tissue and in isolated gill cells. The effect was dose-dependent in both tissues, with a maximal...

...M. W. Beaumont; P. J. Butler; E. W. Taylor SUMMARY The present study was undertaken to answer two questions relating to the exposure of brown trout Salmo trutta to sublethal concentrations of copper and low pH (CLP) for 96h. (1) What is the effect of these pollutants on the rate of oxygen...

...Christian K. Tipsmark; Steffen S. Madsen ABSTRACT The effects of cyclic AMP on Na + /K + -ATPase activity were studied in the gill and kidney of the euryhaline brown trout Salmo trutta using two different experimental approaches. In the first series of experiments, in situ Na + /K + -ATPase...

...M. W. Beaumont; E. W. Taylor; P. J. Butler ABSTRACT Previously, the distribution of ammonia between the intracellular and extracellular compartments has been used to predict a significant depolarisation of the resting membrane potential ( E M ) of white muscle from brown trout ( Salmo trutta...

... the role of insulin and insulin-like growth factor I (IGF-I) in fish adipose tissue function, we have investigated the presence and the regulation of insulin and IGF-I receptors in adipose tissue of brown trout ( Salmo trutta ). Receptors for insulin and IGF-I were detected in trout adipose tissue...

... post-hatching development in three salmonid species: chinook salmon ( Oncorhynchus tshawytscha ), coho salmon ( Oncorhynchus kisutch ) and brown trout ( Salmo trutta ). These three species, while morphologically and developmentally similar, hatch and mature at different sizes (total length). Comparison...

...Hilde Kanli; Eli Norderhus ABSTRACT Regulatory volume decrease (RVD) following hypo-osmotic stimulation was studied using videometric methods in isolated proximal renal tubules from trout ( Salmo trutta ). The relative tubule diameter increased by 132.0±4.8 % (maximum swelling within 1 min at 15...

...M. A. Gallardo; P. Canals; J. L. Albi; J. Pesquero; J. Sanchez ABSTRACT The present study shows that the capacity of trout ( Salmo trutta ) red blood cells (RBCs) and freshly isolated hepatocytes to take up short-chain neutral amino acids changes according to a seasonal pattern. Maximal amino acid...

... + /K + pump activity. * Author for correspondence (e-mail: [email protected] ). 2 8 1996 ©The Company of Biologists Limited 1996 ASC system ATPase Na + /K + pump glucagon adaptive regulation fasting hepatocytes trout Salmo trutta System...

.... Briefly, adult brown trout Salmo trutta (L.) (mass 300–600 g) were obtained from Leadmill trout farm, Hathersage, Derbyshire, and were kept for 2–4 weeks in a 1400 l circular fibreglass tank through which dechlorinated Birmingham tap water ([Ca 2+ ] 130–200 μ mol l −1 ) flowed at 120 l h −1 . The water...

...I. J. Morgan; W. T. W. Potts ABSTRACT Exposure of brown trout ( Salmo trutta ) in fresh water to 0.15 mmol l −1 external thiocyanate for 1 h resulted in a significant decrease in chlorine concentration in the branchial mitochondria-rich (MR) cells from 37 mmol l −1 to 22 mmol l −1...

...I. J. Morgan; W. T. W. Potts; K. Oates ABSTRACT The intracellular concentrations of sodium, chloride, phosphorus and potassium under normal conditions in pavement epithelial (PE) cells of brown trout ( Salmo trutta ) gill were 66, 51, 87 and 88 mmol l −1 respectively. The concentrations...

... glucose pyruvate microcalorimetry metabolism red blood cells trout Salmo trutta The metabolism of red cells has attracted considerable attention, mostly because of the ease with which these cells can be isolated, which allows satisfactory characterisation of the metabolic pathways ( Agar...

.... Hall ), pp. 345 – 354 . Ames: The Iowa State University Press. Canals , P. , Gallardo , M. A. , Blasco , J. and Sánchez , J. ( 1992 ). Uptake and metabolism of L-alanine by freshly isolated trout ( Salmo trutta ) hepatocytes: the effect of fasting . J. exp. Biol . 169...

...+], is as much the result of a fall in [K+] as of a rise in [lactate] ( Kowalchuk et al . 1988 ). 6 11 1992 © 1993 by Company of Biologists 1993 intracellular pH swimming fatigue brown trout low pH Salmo trutta There is increasing evidence that acute exposure to low...

....144.1.463 Davidson , W. and Goldspink , G. ( 1977 ). The effect of prolonged exercise on the lateral musculature of the brown trout ( Salmo trutta ) . J. exp. Biol 70 , 1 – 12 . 10.1242/jeb.70.1.1 Fafournoux , P. , Rémésy , C. and Demigné , C. ( 1983 ). Control...