PMID: 25757320Mar 12, 2015Paper

Ovipositional preference of Grapholitha molesta

Ying yong sheng tai xue bao = The journal of applied ecology
Qing-Tao GongRui-Hong Sun

Abstract

In order to gain better understanding of the oviposition preference of Grapholitha molesta, we studied the ovipositional preference on different host fruit leaves, different parts of peach bran- ches and different varieties of peach in simulated outdoor conditions. The adult ovipositional preference on the host fruit leaves was in descending order, i. e. peach > cherry > apple > plum > pear > crabapple > apricot, and 33.5% of eggs were laid on the peach leaves with the average number of egg on one peach leaf being 8.3. There were differences in egg distribution on both sides of the leaves in different hosts. The number of egg laid on the positive surface was more than on the reverse surface of apple and crabapple leaves, and vice versus for peach, plum, pear and apricot leaves, and 3.3 times more eggs were laid on the reverse surface of peach leaves than on the positive surface. The egg distribution had no significant difference on both sides of cherry leaves. The adult ovipositional preference on peach branches was in descending order of leaf > stipule > petiole > branch. The leaves were the major ovipositonal places with 88.7% of total eggs on. 72.5% of eggs were laid on the 10 leaves near the top unexpanded leaflets, and the...Continue Reading

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