首页|The Inhibition Effect of Low Oxygen on Four Species of Stored Grain Insect Pests

The Inhibition Effect of Low Oxygen on Four Species of Stored Grain Insect Pests

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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 oxygenstored grain pestspopulation inhibitionlife historydifferent stages

Cao Yang、Li Guangtao、Zhou Jia、Li Yanyu、Qu Guiqiang

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Academy of State Administration of Grain Beijing, 100037

Grain and Food College, Henan University of Technology,Zhengzhou 450052

第8届国际储藏物气调与熏蒸大会（The 8th International Conference on Controlled Atmosphere and Fumigation in Stored Products）论文集

Chengdu(CN);Chengdu(CN)

第8届国际储藏物气调与熏蒸大会（The 8th International Conference on Controlled Atmosphere and Fumigation in Stored Products）

39-44

2008