Avcı böcek Anthocoris nemoralis (F.) (Heteroptera: Anthocoridae)'in laboratuvar ve doğa şartlarında Cacopsylla pyri (L.) (Homoptera: Psyllidae) ve Ephestia kuehniella Zell. (Lepidoptera: Pyralidae) yumurta tüketimi.

Abstract

In this study, prey consumption of Anthocoris nemoralis (F.), which is one of the most effective natural enemies of Cacopsylla pyri (L.), the main pest of pear trees were investigated. Experiments were carried out at 25±1°C with a %75±5 RH and 16L:8D photoperiod in the laboratory on two prey species and in natural conditions in two different times (May and July 2002). C. pyri and Ephestia kuehniella Zell. eggs were served as the preys of A. nemoralis nymphs and adults. The predator consumed 685.3±15.52 C. pyri eggs during nymphal stages in laboratory. Under natural conditions, A. nemoralis nymphs consumed avg. 848.69±36.98 C. pyri eggs on May and 913.15±36.38 C. pyri eggs on July. In laboratory, female predators consumed 4967.40±580.61 C. pyri eggs during its life span. Under natural conditions, the female consumed 3619.80±479.0 eggs during its life span at the experiments which started on May, however, the female consumed 4004.25±293.52 C. pyri eggs during its life span at the experiments which started on July. In laboratory, A. nemoralis consumed 136.65±4.38 E. kuehniella eggs during its nymphal stages, each female and male together, consumed 1936.0±157.46 E. kuehniella eggs during their life span. The consumption of prey, E. kuehniella , increased with the increment of prey density. Adult females consumed more C. pyri eggs that of adult males. The starvation periods of males and females of predator fed on E. kuehniella eggs were 8.55 and 8.75 days, respectively.