مرکز منطقه ای اطلاع رساني علوم و فناوري - The Frequency of Feeding Behavior of Nezara viridula (L.) (Hemiptera: Pentatomidae) at Different Growth Stages of Tomato Fruit

Abstract :

In the study, the effect of green-ripe and red-ripe stages of tomato fruit in laboratory conditions, on the frequency of feeding behaviors of 2nd, 3rd, 4th and 5th nymph instars, male adults and female adults in preoviposition and oviposition stages of Nezara viridula (L.) (Hemiptera: Pentatomidae) was investigated. Number of repetition of the feding behaviour of beginning phase, probing phase and active feding phase of individuals belonging to the each biological period determined in a one hour time zone. Individuals fed 1-3 times within one hour in the green-ripe and red-ripe stages of tomato. The frequency of feeding in the green-ripe stage of tomato was observed minimum 1,1 in 2nd nymph instars, maximum 1,8 in oviposition females in the beginning phase. The frequency of probing phase was determined minimum 1,2 in 3rd nymph instars, maximum 1,8 in oviposition females. In the same ripe stage, active feeding phase was observed minimum 1,2 in 3rd nymph instars, maximum value was observed in oviposition females again. The frequency of feeding in the red-ripe stage of tomato was observed minimum 1,1 in 3rd nymph instars, maximum 1,5 in preoviposition females and males in the beginning phase. The frequency of probing phase was determined minimum 1,2 in 3rd nymph instars, maximum 1,5 in preoviposition females and males. The frequency of active feeding in the red-ripe stage of tomato was observed minimum 1,2 in 3rd nymph instars, maximum 1,6 in males.