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Issue:ISSN 2095-1353
           CN 11-6020/Q
Director:Chinese Academy of Sciences
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Your Position :Home->Past Journals Catalog->2013年50 No.6

The effect of parasitization by Microplitis pallidipes Szepligeti&n(Hymenoptera: Braconidae) on the total protein and sugar and lipid < content of Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae) larvae
Author of the article:JI XiangYun1,2YIN YangYi2WAN NianFeng2TAN JiCai1JIANG JieXian2**
Author's Workplace:1. College of Biosafety Science and Technology, Hunan Agriaultural University, Changsha410128, China;
 2. Ecological Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences/
Shanghai Key Laboratory of Protected Horticultural Technology,Shanghai201403, China
Key Words:Microplitis pallidipes, Spodoptera exigua, parasitization, total sugar, protein, lipid, hemolymph
Abstract:     To discuss the physiological effects of parasitization by parasitoids on host larvae, we studied the effect of the parasitism by Microplitis pallidipes Szepligeti on the total protein concentration and sugar concentration in the hemolymph, and the lipid content of Spodoptera exigua (Hübner) larvae. The results indicated that the total sugar concentration in the hemolymph began to increase from day 1 after parasitization and were significantly greater, on days 2 and 5, total hemolymph protein was consistently lower in the parasitized than unparasitized group and these differences were significant on days 1, 4 and 5. The lipid content of parasitized larvae was consistently higher than that of unparasitized larvae and this difference began to be significant from day 2 after parasitization. Our results indicated that parasitization by M. pallidipes stimulated total sugar synthesis but inhibited protein synthesis in hemolymph, and meanwhile stimulated the lipid synthesis in larvae of S. exigua.
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