Do insects feel pain? — A biological view

Abstract

The article emphasizes the question of whether insects have a sense of pain. It explores the adaptive role of pain in humans and the similarities and contrasts between the behavior of insects and mammals undergoing trauma or noxious stimulation. While humans and mammals exhibit behaviors such as withdrawal, protection, aggression, and learned avoidance or aggression when subjected to pain, insects primarily rely on rigid, programmed responses. Insects lack specific nociceptors like humans and have a less complex central nervous system. Observations of insects’ behavior after injuries show no signs of seeking protection for damaged body parts or exhibiting immobilisation, indicating the absence of an adaptive pain response. The comparison of neural organization and behavior between insects and mammals suggests that insects likely do not experience pain as humans do. – AI-generated abstract.