Ovipositing Hessian fly females lay fewer eggs on wheat plants that are already occupied by virulent Hessian fly larvae. This reduction in egg numbers is observed even when plants have been fed upon for only 24-48 hours. I used wheat genotypes carrying single resistance genes to determine if the reduction in egglaying on leaf blades is related to 1) the presence of larvae at the base of the plant or 2) the effects of the feeding larvae on the plant itself.
Species 1: Diptera Cecidomyiidae Mayetiola destructor (Hessian fly)
Keywords: host selection, behavior
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