Journal
JOURNAL OF FISH BIOLOGY
Volume 67, Issue 5, Pages 1202-1212Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1095-8649.2005.00815.x
Keywords
carp; cortisol; roach; stress; tagging; telemetry
Categories
Ask authors/readers for more resources
The present study investigated, for the first time, a non-invasive technique for monitoring cortisol levels in fishes that had been implanted with electronic transmitters. This technique involved the measurement of cortisol released into the water by individual fish, Carp Cyprinus carpio and roach Rutilus that had been tagged with miniature dummy acoustic transmitters responded to the surgical implantation of the tags with an immediate (1 to 4 h) increase in cortisol concentrations in the water. These amounts of cortisol were higher than in handled only' and 'handled and anaesthetized' groups. Estimated cortisol release rates for both species correlated well with the direct measurements in the water in both species water cortisol concentration and cortisol release rates returned to pre-stress levels within 12 h of tag-insertion and remained low for the remainder of the experiment. The calculation or cortisol release rates highlighted a difference of a factor of about four between peak release rates in carp and roach. There was no evident long-term cortisol stress response to the presence of a tag in the body cavity in either species. (c) 2005 the Fisheries Society of the British Isles
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available