伞裙追寄蝇对草地螟幼虫的寄生功能反应  

Parasitic Functional Response of Exorista civilis Rond.to Loxostege sticticalis L.Larvae

作　　者：王建梅[1] 刘爱萍[1] 高书晶[1] 徐林波[1] 崔智林 

机构地区：[1]中国农业科学院草原研究所,内蒙古呼和浩特010010 [2]乌兰察布四子王旗草原监理所,内蒙古011800

出　　处：《中国草地学报》2013年第5期169-172,共4页Chinese Journal of Grassland

基　　金：公益性行业(农业)科研专项经费项目(201103002);内蒙古应用技术研发项目"绿色草业发展关键技术研制开发与生态康复型草原绿色控害关键技术研发";"十二五"国家科技支撑计划项目(2012BAD13B07)

摘　　要：室内条件下(23±1℃,RH 60%～70%,L∶D=14h:10h)研究了伞裙追寄蝇(Exorista civilis Rond.)对草地螟(Loxostege sticticalis L.)幼虫的寄生功能反应。结果表明,其功能反应曲线符合HollingII型,随着草地螟幼虫数量的增加,伞裙追寄蝇寄生量呈增加趋势,而寄主数量增加到一定程度时,寄生量趋向稳定,拟合方程为Na=0.7217N/(1+0.044N)。通过该方程可明确单头雌成蝇在24h内最多寄生16.4头草地螟幼虫,其寄生1头草地螟幼虫所需时间为0.044h。The parasitic functional response of Exorista civilis Rond. to Loxostege sticticalis L. larvae was observed at 23±1 ℃,RH60%- 70% and 14L ： 10D. The results showed that the functional response was belong to Holling type II. The number of parasitized larvae increased with the increase of the larvae density, when the host number was increased to a given number, the parasitic number tended to be stable, and the functional response can be expressed as Na= 0. 7217 N / （ 1 ＋ 0. 044 N）. The numbers of hosts parasitized by one female in 24 h was 16.4. The time spent in one host parasitized by single E. civiZis was 0. 044 h.

关 键 词：伞裙追寄蝇 草地螟 功能反应 干扰效应 

分 类 号：S812.6[农业科学—草业科学]