COMPARISON OF WSSV-RESISTANCE IN ARTIFICIAL AND NATURAL INFECTION EXPERIMENTS IN FENNEROPENAEUS CHINENSIS
中国对虾(Fenneropenaeus Chinensis)自然感染与人工感染 WSSV 抗病力的比较

Thirty families of Fenneropenaeus chinensis produced by natural mating or artificial insemination were infected with WSSV by artificial or natural infection. In order to compare the WSSV-resistance among families, survival rates of each family were counted when survival rates of total samples approximately reached 35 percent during the course of the two experiments. Chi-square test for fourfold table was applied to analyze the survival rate of each family. Survival rates of 23 families were consistent in two infection experiments, with family survival rate of 77% consistency. The result of independent-sample T test for survival rates of each cross combination showed that there were not significant differences between the two infection experiments (P>0.05), which indicated that the WSSV-resistance of each family were almost consistent between the artificial infection and the natural infection experiments. In addition, WSSV-resistance was analyzed in all the families in two experiments, and the result indicated that 5 families probably were better than those of the others in WSSV-resistance.