关键词: 印鼠客蚤, 性比, 生长发育, 羽化

Abstract: Objective To provide basic information for the study of oriental rat(flea's)(Xenopsylla cheopis) development,ecological habit,mechanism of disease transmission,physiology and toxicology,and insecticide exploitation et al.,the sex ratio and adult eclosion activity of(X.cheopis) were studied in laboratory population.Methods The larva and adult rat flea were reared with artificial diet and white mouse respectively.The process of larva pupation and adult emergence were recorded,and the sex ratio was calculated during the flea development. Results The average eclosion ratio was((78.7±)(7.5))%,and the sex ratio was(♀∶♂=)(1.55∶1).Female adult was account for((96.2±)(3.5))%,((61.0±)(6.4))% and((10.0±)(8.7))% for the 1st-5th,6th-17th and 18th-20th eclosion days respectively.The adult emergence peak was from the 6th to 17th days,and there were((82.3±)(2.1))% pupae turned in adults at this time.Conclusion The result shows(X.cheopis) has a relative higher eclosion ratio.In laboratory population of X.cheopis the female adult is more than the male.