Electrofishing-induced cardiac disturbance and injury in rainbow trout
Schreer, J.F.; Cooke, S.J.; Connors, K.B.
Journal of Fish Biology 64(4): 996-1014
ISSN/ISBN: 0022-1112 DOI: 10.1111/j.1095-8649.2004.00364.x
Cardiac output (CO), heart rate (HR) and stroke volume (SV) were monitored in rainbow trout Oncorhynchus mykiss electroshocked (pulsed DC) with various voltage, frequency, pulse width and shock duration settings. Additionally, behavioural recovery times and internal haemorrhaging were examined. During electroshock, heart function became erratic and typically ceased for much of the event (cardiac arrest). Following electroshock, CO increased almost entirely due to an increase in SV.