Wild bee populations face serious threats from agricultural pesticide exposure. Sublethal effects impair navigation, foraging, and reproduction, causing chronic welfare harm at the population level.
Wild bee exposure to agricultural pesticides causes individual welfare harm through impaired cognition, navigation failure, and immune suppression. At population scale, these individual effects translate into colony losses and local extinctions. The precautionary principle supports strong restrictions on pesticides with demonstrated sublethal bee toxicity, even in the absence of direct mortality evidence.