Anoxia survival in common carp and crucian carp is related to high zinc concentration in tissues

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Title:	Anoxia survival in common carp and crucian carp is related to high zinc concentration in tissues
Authors:	Sen Shyong Jeng Tzu Yung Lin Ming Shyong Wang Yu Yin Chang Chao Yi Chen Chih Chieh Chang 王明雄
Contributors:	保健營養系
Date:	2008-07
Issue Date:	2009-07-23 14:32:14 (UTC+8)
Abstract:	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°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 μg/[g fresh tissue], P < 0.001). The digestive tract tissues of the crucian carp had mean zinc concentrations of 652 ± 458 μg/(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.
Relation:	Fisheries science 74(3)：p.627 - 634
Appears in Collections:	[Dept. of Health and Nutrition (including master's program)] Periodical Articles

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