...-bred population of juvenile Atlantic salmon. Thermal tolerance Cardiac performance Salmonid Plasticity Muir, 2022 Natural Sciences and Engineering Research Council of Canada http://dx.doi.org/10.13039/501100000038 RGPIN-2017-06045 RGPIN-2018-06665...

... thermal regime. Environmental predictability Unpredictable Climate change Cardiac performance Intertidal physiology Bioenergetics National Science Foundation http://dx.doi.org/10.13039/100000001 IOS-1557496 Jastro Shields Fellowship University of California...

... that rainbow trout may cope with the aversive effects caused by coronary artery obstruction through plastic ventricular remodeling, which, at least in part, restores cardiac performance and myocardium oxygenation. * Author for correspondence ([email protected]) Competing interests...

... that eurythermal fishes may be relatively robust to chronic warming and hypoxic events under climate change. Cardiac performance Global warming Hypoxia tolerance Teleost fish Thermal acclimation Aquatic hypoxia, a condition of reduced water O 2 partial pressure (P w O 2 ), is a naturally...

... and/or exercise. At the individual scale, these responses were associated with a greater aerobic scope, maximum metabolic rate and net cost of locomotion, suggesting the higher energy cost of this strategy. This impaired cardiac performance could have wider consequences for other physiological performance...

... influenced by the pattern of fluctuation with which thermal stress was applied. Specifically, we examined whether there was a differential response (measured as cardiac performance) to repeated heat stress of a constant and predictable magnitude compared with heat stress applied in a stochastic...

... enlarged hearts with lower maximum stroke volume and cardiac output. In accordance with impaired cardiac performance, overall circulatory oxygen-transporting capacity was diminished as indicated by reduced aerobic swimming performance. In contrast to the well-known adaptive/physiological heart growth...

.... In these crabs, embryonic development occurs in the pH-variable intertidal zone (pH 6.9–9.5), larvae mature in the more stable pelagic environment (pH 7.9–8.2), and juvenile crabs settle back into the pH-variable intertidal zone. We examined survival, cardiac performance, energetics and morphology in embryonic...

...L. H. Petersen; A. K. Gamperl SUMMARY Recent in vivo experiments on Atlantic cod (Gadus morhua) acclimated to chronic hypoxia (6-12 weeks at 10°C; P w O 2 ~8-9 kPa) revealed a considerable decrease in the pumping capacity of the heart. To examine whether this diminished cardiac performance was due...

...M. C. Cerra; S. Imbrogno; D. Amelio; F. Garofalo; E. Colvee; B. Tota; J. M. Icardo SUMMARY The morphodynamic changes occurring during growth were evaluated in the eel(Anguilla anguilla L.) heart. Using an in vitro working heart preparation, cardiac performance of small (body mass 96.76±27.49 g...

... conditions. Working at basal levels, hearts did not require extracellular glucose to maintain power under aerobic conditions. However, cardiac performance was significantly reduced without exogenous glucose under oxygen-limiting conditions. The addition of the glucose transporter inhibitor cytochalasin B...

...Sandra Imbrogno; Lucia De Iuri; Rosa Mazza; Bruno Tota ABSTRACT Nothing is known about the effects of nitric oxide (NO) on cardiac performance in fish. Using an in vitro working heart preparation that generates physiological values of output pressure, cardiac output and ventricular work and power...

...A. K. Gamperl; A. W. Pinder; R. R. Grant; R. G. Boutilier ABSTRACT To investigate the relationship between cardiac performance and coronary perfusion, cardiovascular variables (Q̇, V S , f H , P DA) and coronary blood flow (q̇ cor) were measured in rainbow trout (Oncorhynchus mykiss) (1.2–1.6 kg...

...A. K. Gamperl; A. W. Pinder; R. G. Boutilier ABSTRACT In fish, catecholamine-induced changes in cardiac performance in vivo are the result of complex interactions between the direct adrenergic effects on the heart and peripheral circulation and the reflex responses to increased blood pressure...

... of only 0.074%. Moreover, as males matured and their testes grew from 0.07 to 3.92% of body mass, RVM more than doubled. In female trout no such heart growth occurred; RVM remained unchanged during the period of ovary growth. Cardiac performance was assessed using an in situ perfused heart preparation...

..., Australia. 13 01 1992 © 1992 by Company of Biologists 1992 cardiac performance ultrasound end-systole end-diastole Oncorhynchus mykiss Mammalian cardiovascular research has benefited greatly from the use of ultrasound to visualise the working heart. Echocardiography...

... © 1988 by Company of Biologists 1988 respiration cephalopods cardiac performance hypoxia Ventilation and blood flow have been studied in some detail in Octopus (for reviews see Wells & Wells, 1983 ; Wells et al . 1987) but equivalent data for squids are scarce owing...

... the heart of the octopus, Eledone cirrhosa (Lam .). J. exp. Biol . 93 , 243 – 255 . 10.1242/jeb.93.1.243 Smith , P. J. S. (1985a). Cardiac performance in response to loading pressures for two molluscan species, Busycon canaliculatum (L.) (Gastropoda) and Mercenaria mercenaria (L...