... in rainbow trout is due to atrio-ventricular block, an outcome from the opposite effects of temperature on depolarizing sodium (source) current and repolarizing potassium (sink) current of ventricular myocytes. Fish heart Electrocardiogram Cardiac arrhythmia Sodium current Chronaxie Rheobase...

... Heart rate Oncorhynchus mykiss Cardiac arrhythmia Teleosts are the most abundant class of fishes (>25,000 species) and utilize a variety of strategies in response to warming. Almost universally among these strategies is an increase in heart rate ( f H ), a response that has been found...

.... Hence,it would be interesting to know if cardiac activity in these mutants is affected by temperature in a similar way. Answers to these questions will provide valuable insight into the pathophysiology of this cardiac arrhythmia and will provide further insight into the possible defects underlying...