**3.2 The influence of ecological factors on the genetic diversity of** *D. punctatus spectabilis*

Correlation analysis by SPSS software of 4 populations of *D. punctatus spectabilis* in different geographical areas shows a significant negative relation between genetic diversity and elevation, and the genetic diversity within populations was positively related with the annual temperature and moisture. In opposite, the genetic diversity was weakly related with latitude. Besides, there was a positive relation between the genetic distance and the distance of elevation, which shows that geographic isolation has obstruct effect on gene flow (table38,39). Generally, the genetic distance between groups in the same population is certainly related with the geographical distance and host(p<0.01,high notable correlativity).


Table 38. Correlation of the genetic diversitys within 4 populations of *D. punctatus spectabilis* and the ecological factors


Table 39. Relationship of genetic distances and geographical distances (altitude distances) between 4 populations of *D. punctatus* spectabilis
