At least a trillion insects are killed annually for food and animal feed.
Decapitated flies can still jump, but they do not display this difference, demonstrating their brain's involvement in heat avoidance. Communication between the brain and the responsive body part is also consistent with pain.The framework we used to evaluate evidence for pain in different insects was the one that recently led the UK government to recognize pain in, decapod crustaceans and cephalopods , by including them in the Animal Welfare Act 2022.
Despite weaker evidence in other insects, many still show"substantial evidence" for pain. Bees, wasps, and ants fulfill four criteria, while butterflies, moths, crickets, and grasshoppers fulfill three. The UK government set a precedent: strong evidence of pain warrants legal protection. At least some insects meet this standard, so it is time to shield them.
For example, the Animal Welfare Act 2006, which makes it an offense to cause"unnecessary suffering" to animals covered by the act. This may lead to insect farms, like conventional farms, minimizing animal suffering and using humane slaughter methods.
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