Sunday, 17 November 2002 - 9:24 AM
0129

This presentation is part of : Ten-Minute Papers, Section F. Crop Protection Entomology

Sex-dependent flight performance in the oriental fruit moth, Cydia molesta

Silvia Dorn and Jacqueline Hughes. Institute of Plant Sciences, Applied Entomology, ETH Zurich / NW, Clausiusstrasse 25, Zurich, Switzerland

Cydia molesta is a major pest of stone fruit and an increasingly important late season pest of apple. Its flight performance on computer-linked flight mills differs from that of C. pomonella as female moths significantly outperformed males in all measured flight parameters including total distance flown, distance of longest single flight, and velocity. The proportion of long-flying females was three to six times greater than that of males. This flight performance coincides with existing field studies. The data suggest that a limited proportion of the population, in particular females, may have the capacity to make inter-orchard flights. The limitations of monitoring C. molesta populations in apple orchards solely by pheromone trapping of males are discussed.

Species 1: Lepidoptera Tortricidae Cydia molesta (oriental fruit moth)
Species 2: Lepidoptera Tortricidae Cydia pomonella (codling moth)
Keywords: flight mill, dispersal

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