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Pesticides, Herbicides and Their Effects on Pollinators
Summary
This review examined how pesticide exposure—particularly neonicotinoids—harms pollinators through direct contact, ingestion, and bioaccumulation, finding that chronic low-level exposure impairs foraging, navigation, immune function, and reproduction in bees and other pollinators.
Pesticides used in agriculture, urban areas, and gardens are raising concerns about their impact on pollinators. Exposure to pesticides through direct contact, ingestion, and accumulation can harm pollinators. High pesticide concentrations cause immediate harm, while chronic exposure weakens their immune systems, impairs reproduction, and leads to population declines. Neonicotinoids, a type of insecticide, are especially problematic. They are absorbed by plants and spread to nectar and pollen, affecting foraging abilities, navigation, immunity, and reproductive success in pollinators. Integrated pest and pollinator management (IPPM), sustainable agriculture practices, and pesticide-free zones aim to maintain ecological balance and reduce chemical use. We observe lethal, sub lethal impacts on pollinator species including Honeybees (Apis mellifera), Bumblebees (Bombus spp.), butterflies, and other beneficial insects, and assess ecological consequences. Empirical data from field and laboratory studies are synthesized, and a comparative table summarizes pesticide usage and recorded pollinator mortality rates. Raising awareness about pollinator importance and pesticide impacts is crucial for conservation, and by balancing pest control with pollinator protection, long-term sustainability of agriculture and natural ecosystems dependent on pollination services can be ensured.
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