0/05). The predators of the aphid collected in the four studied regions included four species of ladybirds, one lacewing species, two species of bugs and one fly species. There was a significant correlation between the aphid population and its predators. The calculated determination coefficient (R2) between the aphid population and ladybirds, and between the aphid population and other predators were 0.78 and 0.48 respectively, in 2000; and 0.88 and 0.84 respectively, in 2001. In both years, the determination coefficient between the aphid population and ladybirds was more than that of between the aphid population and other predators in the four regions.]]>
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