Chapter 98 – Feeding Behavior

Publisher Summary This chapter provides an overview of insects feeding behavior and its regulations. The most extensive studies of insect feeding behavior and its regulation have focused on two insects with completely different feeding habits: the adult black blow fly (Phormia regina), which is a fluid feeder; and the final nymphal stage of the migratory locust (Locusta migratoria ), a grass-feeding insect. Although their feeding habits are different, there are many common features in their feeding behavior patterns and the mechanisms that control their feeding behavior. The pattern of feeding changes with the age of the insect, its previous experience, and its nutritional needs. Phytophagous insects tend to eat greater amounts in the middle of a developmental stage and more in the light than in the dark. Feeding behavior is determined to a large extent by environmental factors, although relatively few extensive studies are carried out. Temperature has a major effect on feeding behavior, as it does on other insect activities, with little feeding occurring at low or at very high temperatures.