Journal
FISHERIES SCIENCE
Volume 74, Issue 3, Pages 627-634Publisher
SPRINGER TOKYO
DOI: 10.1111/j.1444-2906.2008.01567.x
Keywords
anoxia; Carassius carassius; common carp; crucian carp; Cyprinus carpio; zinc
Categories
Ask authors/readers for more resources
Ten lots of common carp and six lots of crucian carp (each lot of 100 fish) were treated under anoxia for five days at water temperatures of 25-31 degrees C. The average per group mortality of common carp was 17%, but none of the 600 crucian carp died. The digestive tract tissues of the common carp that died had significantly lower zinc concentrations than those that survived (59 +/- 41 vs 142 +/- 60 mu g/[g fresh tissue], P < 0.001). The digestive tract tissues of the crucian carp had mean zinc concentrations of 652 +/- 458 mu g/(g fresh tissue). One lot of common carp that had low tolerance for anoxia was fed a high zinc diet (2000 mg zinc/kg diet) for 1, 2 or 6 months and then subjected to 5 days anoxia. The survival rates of those fed the high zinc diet 1 and 2 months increased from 0 to 50%, respectively; all of fish that had fed a high zinc diet for 6 months survived. Thus, anoxia survival in common carp and crucian carp is closely related to the high concentrations of zinc in their tissues.
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