This swelling can subsequently
block gill lamellae and lead to reduced oxygen
uptake. As induction time increases, cortisol concentrations
increase along with the associated haematological
components such as glucose, lactate, sodium
and potassium concentrations in freshwater fish (Sladky
et al. 2001; Sharp et al. 2004; Wedemeyer et al.
1990). In addition to preventing physical injury,
certain anaesthetics may reduce or block activation
of the hypothalamo–pituitary–interrenal (HPI) axis
associated with handling stress. Failure to suppress
activation of the HPI axis during stress results in a
release of cortisol, which in turn causes various
secondary stress responses, including increases in
circulating levels of glucose and lactate (Rotllant et al.
2001; Skjervold et al. 1999).
This swelling can subsequently
block gill lamellae and lead to reduced oxygen
uptake. As induction time increases, cortisol concentrations
increase along with the associated haematological
components such as glucose, lactate, sodium
and potassium concentrations in freshwater fish (Sladky
et al. 2001; Sharp et al. 2004; Wedemeyer et al.
1990). In addition to preventing physical injury,
certain anaesthetics may reduce or block activation
of the hypothalamo–pituitary–interrenal (HPI) axis
associated with handling stress. Failure to suppress
activation of the HPI axis during stress results in a
release of cortisol, which in turn causes various
secondary stress responses, including increases in
circulating levels of glucose and lactate (Rotllant et al.
2001; Skjervold et al. 1999).
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