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Electrophoretic study of enzymes from cereal aphid populations 2. use of electrophoresis for identifying aphidiid parasitoids hymenoptera of sitobion avenae hemiptera homoptera aphididae

, : Electrophoretic study of enzymes from cereal aphid populations 2. use of electrophoresis for identifying aphidiid parasitoids hymenoptera of sitobion avenae hemiptera homoptera aphididae. Bulletin of Entomological Research 73(4): 659-666

The effect of parasitism by the aphidiid wasp Aphidius uzbekistanicus (Luzhetski) on the isoenzyme banding patterns of 14 soluble enzymes separated by 1-dimensional slab polyacrylamide gel electrophoresis from crude homogenates of its main host, S. avenae (F.), are described. Parasitism was detectable using any 12 of these enzymes. The differences observed between the banding patterns for 3 enzymes (esterase, malate dehydrogenase and malic enzyme) separated from the adults of 5 primary parasitoid species attacking this aphid (A. picipes (Nees), A. uzbekistanicus, Ephedrus plagiator (Nees) Praon volucre (Hal.) and Toxares deltiger (Hal.)) are also described. Esterase was the best enzyme for taxonomic differentiation of all aphidiid species examined. The use of electrophoresis for assessing percentage wasp parasitism in integrated management studies of cereal aphids is discussed.

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