二齿新蚤和方形黄鼠蚤松江亚种存活力的再次研究

RESTUDY ON SURVIVORSHIP OF THE FLEAS NEOPSYLLABIDENTATIFORMIS  AND CITELLOPHILUS TESQUORUM SUNGARIS

以１９８５—１９９０年实验室观察二齿新蚤和方形黄鼠蚤松江亚种新羽化蚤在不同温度、吸血次数、湿度、性别４种条件下的存活率，利用多元线性回归分析方法，得到如下结果：温度越高，蚤存活率越低；当蚤吸血次数越多时，或湿度越高时，或蚤为雌蚤时，蚤存活率越高。对标准回归模型系数的绝对值作多重比较（Ｂｏｎ，Ｄｕｎｃａｎ，ＬＳＤ法）得知：（１）温度与吸血次数的系数差异不显著（Ｐ＞０．０５）；（２）湿度与性别的系数差异不显著（Ｐ＞０．０５）；（３）温度与湿度的系数、温度与性别的系数、吸血次数与湿度的系数、吸血次数与性别的系数差异均显著（Ｐ＜０．０５）。结论：温度和吸血次数是影响蚤存活率的主要因素。

The laboratory studies from 1985—1990 showed the survival rate of the new emerged fleas, Citellophilus tesquorum mongolicus  and Neopsylla bidentatiformis,on four different conditions, temperature(T), frequency of blood feeding(Fd), relative humidity (RH) and sex(S). Using multiple linear regression method, the following restults were herewith given. That, the higher the T the lower the survival rate of fleas; The higher the Fd, or the RH was, or the flea was female, the higher was the survival rate of fleas. Multiple comparison (Bon, Duncan; LSD method) among the absolute values of four standard regression coefficients showd the following results, i.e.(1) there was no significant difference between the coefficient of T and Fd(P>0.05); (2)there was no significant difference between the coefficient of RH and S(P>0.05);(3)there existed significant differences (P<0.05) between all the following coefficient pairs T and RH, T and S, Fd and RH, and Fd and S. Conclusions: T and Fd were the top factors, Followed by RH and S, for the fleas survival.