嗜卷书虱的实验生态研究

AN ECOLOGICAL STUDY ON THE LABORATORY POPULATION OF PSOCID, LIPOSCELIS BOSTRYCHOPHILA BADONNEL (PSOCOPTERA:LIPOSCELIDIDAE)

在８ 种温度 （１７５ ～３５ ℃） 及５ 种相对湿度 （５０ ％ 、６０ ％ 、７０ ％ 、８０ ％ 和９０ ％ ） 条件下，以全麦粉、酵母粉、脱脂奶粉 （１０ ∶１∶１） 为食料， 系统研究了嗜卷书虱 Ｌｉｐｏｓｃｅｌｉｓ ｂｏｓｔｒｙｃｈｏｐｈｉｌａ Ｂａｄｏｎｎｅｌ 实验种群生态学特性。获得了该虫在不同温、湿度条件下生长发育、生存和繁殖的一系列特性和参数， 包括各虫态发育历期、存活率、发育起点温度、有效积温和平均繁殖力等， 并建立了发育速率。

An ecological study on the laboratory population of psocid, Liposcelis bostrychophila B.,was carried out on a diet composed of whole wheat flour,yeast and skimmed milk powder (10∶1∶1) at 8 levels of temperatures ranging from 17 5℃ to 35℃,as well as 5 humidities ranging from 50 to 90%RH.The parameters for development,survival and fecundity of the psocid laboratory population were obtained by means of statistics analysis in various rearing experiments.The results showed that the temperature lower than 20℃ and relative humidity less than 60%RH had adverse influence on survival.Within the range of 20～35℃,the mean development period of a generation was 59 8～19 1 days,the theoretical developmental threshold and the total effective temperature were 13 45℃ and 414 05 day degree.The average numbers of eggs laid per female was 51 9～74 7.The highest generation survival rate was recorded at 27 5℃,while the lowest at 20℃.Within the range of 60%～90%RH,the shortest developmental duration at different stages was at 90%RH,while the highest survival rate and fecundity were observed at 80%RH.Consequently,the optimum temperature and relative humidity for its growth and reproduction were 27 5～30℃ and 80%RH.Finally,theoretical models for developmental speed,survinval rate and fecundity were suggested.