Can Interactions between an Omnivorous Hemipteran and an Egg Parasitoid Limit the Level of Biological Control for the Tomato Pinworm

摘要: Relationships between the omnivorous predator Nesidiocoris tenuis (Reuter) and egg parasitoid Trichogramma achaeae Nagaraja Nagarkatti were studied in laboratory (no-choice choice assays, functional responses) a greenhouse experiment. Both natural enemies are utilized biological control of tomato pinworm on greenhouse-grown crops. Three different food items offered to predator: nonparasitized prey, prey parasitized for less than 4 d by T. achaeae, more parasitoid. There significant differences consumption types, with highest followed ( d), both no-choice trials. At same time, causes mortality (over 80%) regardless previous parasitism, resulting very coincidental intraguild predation detrimental It has also been observed that there was change response from Type II presence I when combination prey. This represents an increase instantaneous search rate (a') decrease handling time (Th), which indicates feeding behavior two types. Under conditions, reduced percentage parasitism just over 20%. However, present, better pest Tuta absoluta (Meyrick) achieved case application any them alone.