摘要
Exodsta civilis Rond. （ Diptera： Tachinidae） is an important parasitoid of Loxostege sticticalis L. （ Lepidoptera： Pyrelidae） and other lepidopterous pests. The biological characteristics of E. civilis were observed in the laboratory with L. sticticalis as host. The adults emerged mainly during the daytime from 08：00 am to 10：00 am and 14：00 pm to 16：00 pm, and males emerged usually earlier than females, with the sex ratio of 1.26：1 （ 2/♂ ）. The average fecundity of female （number of eggs laid by one female） was 159.8 eggs, and the spawning duration lasted 16.6 d on average; the first spawning peak appeared on the fourth day after spawning. The longevity of adults was the longest at constant temperature of （23 ± 1 ） ℃. Supplement of sugary substances could significantly prolong the longevity of adults, especially feeding 20% hydromel could extend the longevity to 44 d. The emergence rate of E. civilis significantly decreased with an increase in storage time of L. sticticalis cocoon, but there was no further significant decrease after 110 d.
Exodsta civilis Rond. （ Diptera： Tachinidae） is an important parasitoid of Loxostege sticticalis L. （ Lepidoptera： Pyrelidae） and other lepidopterous pests. The biological characteristics of E. civilis were observed in the laboratory with L. sticticalis as host. The adults emerged mainly during the daytime from 08：00 am to 10：00 am and 14：00 pm to 16：00 pm, and males emerged usually earlier than females, with the sex ratio of 1.26：1 （ 2/♂ ）. The average fecundity of female （number of eggs laid by one female） was 159.8 eggs, and the spawning duration lasted 16.6 d on average; the first spawning peak appeared on the fourth day after spawning. The longevity of adults was the longest at constant temperature of （23 ± 1 ） ℃. Supplement of sugary substances could significantly prolong the longevity of adults, especially feeding 20% hydromel could extend the longevity to 44 d. The emergence rate of E. civilis significantly decreased with an increase in storage time of L. sticticalis cocoon, but there was no further significant decrease after 110 d.
基金
Supported by Special Fund for Agro-scientific Research in the Public Interest(201103002)
"948"Project of Ministry of Agriculture(2011-G4)
Applied Technology R&D Project of Inner Mongolia:"Research and Development of Key Technology for Green Grass Industry"and"Development of Key Pollution-free Control Technology for Ecological Rehabilitation Steppe"
