DefinePK

Abstract

Myzocallis coryli is one of the important pests of hazelnut in Iran. Seasonal population dynamics and spatial distribution of the aphid were studied during 2010-2011 in Lorestan, Iran. The aphid densities were monitored weekly and spatial distribution was evaluated by Taylor's power law. M. coryli was observed during April to July. During the months, average weather temperature was 12.5-31.5C. Population peaks of the aphid were recorded in end of May and beginning of June during 2010 and 2011, respectively. The adult and nymph densities of M. coryli decreased with increasing weather temperature higher than 25C. Spatial distribution of the aphid was aggregated on hazelnut.