The Inhibition Effect of Low Ozygen on Four Species of Stored Grain Insect Pests
Four kinds of representative stored grain pests; Tribolium castaneum Herbst, Oryzaephilus surinamensis Linne, Sitophilus zeamais Motschulsky and Sitotroga cerealella Olivier, were placed into the low oxygen environments attemperature of 30℃. The oxygen contents were 5%, 10% and 15%. Rresearch was performed the on the life history, growth and development and the inhibition effects under the different low oxygen environments…he results showed that when compared with the same kinds of test pests grown and developed under oxygen content of 21%, the eggs of these kinds of test pests could not be incubated under a low oxygen environment of 5%, and they could not finish their life history. A low oxygen environment of 10% can inhibited the incubation of the eggs of T. castaneum, O. surinamens/s and S. cerealeUa obviously, and it also had a certain inhibition on the developments of larvae of T. castaneum and O. surinamensi s This results in prolongation of the larva period.. The larva of S. cerealella could not pupate under a low oxygen environment of 10%. A low oxygen environment of 10% has no obvious effect on the eclosion rate of pupae and pupal period of T. castaneum, but it can prolong the pupal period of O. surinamensis obviously inhibiting the growth of S. zeamais effectively. Except for certain inhibitory effects on growth and developments of larvae of S. cerealella, a low oxygen environment of 15% caused certain prolongations of development periods of other test pests, but had no obvious effect on hatchability, eclosion rate and etc. Low oxygen has an obvious inhibition effect on stored grain pests This inhibition effect is more obvious with the reduction of the oxygen content and prolongation of sealing time,. Therefore,a low oxygen environment of 5%-10% oxygen can inhibit growths and developments of T. castaneum, O. surinamensis, S. zeamais and S. cerealella effectively.
low ozygen stored grain pests population inhibition life history different stages
Cao Yang Li Guangtao Zhou Jia Li Yanyu Qu Guiqiang
Academy of State Administration of Grain Beijing, 100037 Grain and Food College, Henan University of Technology,Zhengzhou 450052
国际会议
成都
英文
39-44
2008-09-21（万方平台首次上网日期，不代表论文的发表时间）