Neonicotinoid pesticides impair bee navigation, memory, and immune function at sub-lethal doses — causing chronic welfare harms to individual bees and contributing to colony collapse.
Whether insects experience something like suffering remains scientifically uncertain, but neonicotinoid-exposed bees demonstrate impaired ability to perform behaviors fundamental to their ecology and social function. Bees that cannot navigate home, cannot learn floral rewards, and cannot resist parasitic infections are functionally compromised in ways that matter to their survival and possibly their wellbeing. At the population level, neonicotinoid impacts on bee welfare translate into ecological disruption affecting thousands of plant species dependent on pollination.