Influence of long-period pesticide force on genetic polymorphism of wolf spider Pardosa pseudoannulata (Lycosidae: Araneae)  

作　　者：Sun Jiying Fu Xiuqin Peng Guangxu Zhang Zhigang Yan Hengmei 

机构地区：[1]College of Life Science, Hunan Normal University, Changsha 410081, China

出　　处：《Progress in Natural Science:Materials International》2007年第10期1161-1165,共5页自然科学进展·国际材料（英文版）

基　　金：Supported by National Natural Science Foundation of China (Grant Nos 30370208 ,30570226)

摘　　要：Wolf spiders are predators in large quantities in the fields. How wolf spiders keep their dominant species status under long-period pesticide force？ To answer this question, eight geographical populations of Pardosa pseudoannulata were used as materials to test the influence of geographical habitats on their genomic DNA polymorphism. The RAPD pattern showed polymorphie variations among and within different populations. Total 84 bands amplified by 10 random primers, of which 62 （73.81% ） are polymorphic, were generated from 55 individuals of eight geographical populations. Meanwhile, Shannon＇s index （Ho = 0. 5177） showed a rich genetic diversity of P. pseudoannulata, and most of the genetic variation （64.24 % ） was found within populations. Multiple regression analysis suggested that it is the climatic variation （such as annual average temperature etc. ） that results in adaptive eco-geographic differentiation, and it is the long-period pesticide force that speeds up the genetic differentiation of P. pseudoannulata which changed the genetic diversity of the population.Wolf spiders are predators in large quantities in the fields. How wolf spiders keep their dominant species status under long-period pesticide force? To answer this question, eight geographical populations of Pardosa pseudoannulata were used as materials to test the influence of geographical habitats on their genomic DNA polymorphism. The RAPD pattern showed polymorphic variations among and within different populations. Total 84 bands amplified by 10 random primers, of which 62 (73.81%) are polymorphic, were generated from 55 individuals of eight geographical populations. Meanwhile, Shannon’s index (Ho= 0.5177) showed a rich genetic diversity of P. pseudoannulata, and most of the genetic variation (64.24%) was found within populations. Multiple regression analysis suggested that it is the climatic variation (such as annual average temperature etc.) that results in adaptive eco-geographic differentiation, and it is the long-period pesticide force that speeds up the genetic differentiation of P. pseudoannulata which changed the genetic diversity of the population.

关 键 词：pardosa pseudoannulata （Lycosidae： Araneae） eco-geography long-period pesticide force genetic differentiation. 

分 类 号：Q959.226[生物学—动物学] X503.22[环境科学与工程—环境工程]