Marking Technology and Release Effect Evaluation of Cyprinus carpio zhouhe L.in Yuqiao Reservoir
In order to explore the marker methods for evaluation the fish stocking in Yuqiao Reservoir,Cyprinus carpio zhouhe L.,a unique species in the Yuqiao Reservoir,was selected as the research object,the effects of visible implant elastomer(VIE)tag and alizarin red-S(ARS) dip marker on Cyprinus carpio zhouhe L.were compared.The results showed that after 60 days of labeling,the average survival rates in the control and the VIE labeling group were 95％ and 94％,respectively,with no significant difference compared to the control group (P>0.05);the average survival rate in the alizarin red-S labeling group was 87％,which was significantly lower than the control group (P<0.05).The re-tention rate of the visible fluorescent and alizarin red-S labeling was 60％ and 10％,respectively,without no significant impacts on the length and weight of Cyprinus carpio zhouhe L..After the release of 5,500 tagged fry,a total of 35 Cyprinus carpio zhouhe L.were caught in four re-captures,the entire recapture rate was 0.637％.It indicated that the visible implant elastomer tag was suitable for the evaluation of the effect of short-cycle stock enhancement.
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