Successful recovery of the physiological status of coho salmon on board a commercial gillnet vessel by means of a newly designed revival box

Conservation physiology

“…Shortly thereafter, physiological assessments revealed that the crates failed to enhance recovery of coho salmon and might have exacerbated biochemical disturbance [73]. Working with commercial fishers, physiologists developed a novel recovery chamber and were able to release fish in good shape that were classified as dead upon capture [74], thus resulting in regulatory adoption of this strategy. They also proposed an alternative holding technique that involved forcing fish to swim at low speeds in pens alongside the boat.…”

“…They also proposed an alternative holding technique that involved forcing fish to swim at low speeds in pens alongside the boat. This facilitated clearance of metabolites and prevented expression of cortisol, thereby contributing to increased by-catch survival [74]. 2006However, this approach is not yet used sufficiently to enable a broad-based assessment of cost:benefit ratios of specific measures for conservation managers and zoos [59].…”

Effects of body mass on physiological and anatomical parameters of mature salmon: evidence against a universal heart rate scaling exponent

“…Remaining blood was spun and the plasma was collected and first frozen in liquid nitrogen before being placed at -80°C for subsequent analyses. Plasma cortisol, testosterone, lactate, glucose, osmolality, chloride, sodium and potassium were measured according to the methods outlined elsewhere (Farrell et al, 2001;Clark et al, 2010). Osmolality was measured only for the blood samples taken at the time of death.…”

Excess post-exercise oxygen consumption in adult sockeye(Oncorhynchus nerka) and coho (O. kisutch) salmon following critical speed swimming

“…In contrast, recovery time was only 1.5·h in adult Atlantic cod Gadus morhua, regardless of whether the fish had been chased to exhaustion, accelerated to exhaustion, or performed a Ucrit test (Reidy et al, 1995). Furthermore, the protracted recovery times for juvenile salmonids contrasts with their ability either to repeat Ucrit after as little as a 45·min recovery period (Randall et al, 1987;Peake et al, 1997;Jain et al, 1997;Farrell et al, 1998Farrell et al, , 2003, or to repeat burst swimming 60·min after being chased, swum or fished to exhaustion (Stevens and Black, 1966;Farrell et al, 2001b). Although none of these studies measured EPOC along with repeat swimming performance, M .…”