Predatory Insects as Indicators of Environmental Pollution: Implications for Ecosystem Health and Monitoring
Ankita Rana *
Department of Entomology, College of Agriculture, CSK HPKV, Palampur (H.P.) 176062, India.
Manoj Bhaurao Salunkhe *
Division of Entomology, IARI-Academic Hub, ICAR-Central Institute for Cotton Research, Nagpur, Maharashtra, 441108, India.
Anjana Thakur
Department of Entomology, College of Agriculture, CSK HPKV, Palampur (H.P.) 176062, India.
*Author to whom correspondence should be addressed.
Abstract
Predatory insects are important bioindicators for monitoring environmental pollution and evaluating ecosystem health. Their sensitivity to chemical, biological, and physical stressors, along with short life cycles and trophic interactions, enables them to provide early warning signals of ecological disturbances. This review examines diverse predatory insect groups, including Coleoptera, Ephemeroptera, Odonata, and others, highlighting their roles across different ecosystems. Key criteria for selecting effective bioindicators such as species richness, ecological reliability, ease of management, and measurable responses are discussed alongside established classification frameworks. By considering ecological, physiological, and behavioural traits, predatory insects offer a practical and reliable approach to assess environmental quality. Their use supports conservation planning and promotes sustainable ecosystem management, particularly in the face of increasing anthropogenic pressures. Overall, predatory insects provide a cost-effective and scientifically robust tool for understanding and mitigating the impacts of environmental pollution on ecosystem integrity.
Keywords: Bioindicators, biomonitoring, conservation, ecosystem health, environmental pollution, predatory insects