Effects on three species of grain aphids (homoptera: aphididae) reared on wheat, oats or barley and transferred as adults to wheat, oats or barley
1967
APABLAZA, J.U. | ROBINSON, A.G.
Tests were conducted to determine if there is a “preconditioning” effect when the greenbug, Schizaphis graminum, the English grain aphid, Macrosiphum avenae, and the corn leaf aphid, Rhopalosiphum maidis are reared on wheat, oats or barley and transferred as adults to wheat, oats or barley. Based on numbers of progeny produced on the second hosts, it was concluded that all three species may be reared on barley, and transferred without detrimental effects on their fecundity to either wheat or oats. Transfer tests of the greenbug from wheat or oats, or of the corn leaf aphid from oats, to other plants, should take into consideration the possibility of “preconditioning” by the original host plants.
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