Variations in the Biological and Ecological Attributes of Insects Due to Climate Change: A Review


  • K Chandrakumara Division of Entomology ICAR, Indian Agricultural Research Institute, New Delhi 110012, India.
  • Ashok Kumar Sau Division of Entomology ICAR, Indian Agricultural Research Institute, New Delhi 110012, India.
  • Ankur Department of Entomology, Maharana Pratap University of Agriculture and Technology, Udaipur 313001, Rajasthan, India.
  • Rajesh Division of Entomology ICAR, Indian Agricultural Research Institute, New Delhi 110012, India.
  • Aditya K Tanwar Division of Entomology ICAR, Indian Agricultural Research Institute, New Delhi 110012, India.
  • Basavaraj N Hadimani Division of Entomology ICAR, Indian Agricultural Research Institute, New Delhi 110012, India.



Global Warming, Climate Change, Ghg, Temperature, Precipitation, CO2 , Diapause, Population Dynamics, Voltinism, Phenology, Distribution, Chemical Ecology, Pheromone Communication, Insect Pests.


Climate change is causing a shift in long-term weather patterns and altering parameters such as temperature, atmospheric CO2 , and precipitation patterns. It is likely to be an indirect effect of greenhouse gases and their enhancement in the atmosphere largely induced by human activities. As poikilothermic animals, insects are highly dependent on environmental conditions, particularly temperature, which affects various aspects of their life. Climate change have a direct impact on insect pests by affecting their population dynamics, diurnal activity, growth rate and diapause. It may lead to a range expansion, increased overwintering survival, more generations per year, elevated risk of invasive insect species and insect-borne plant diseases, and changes in their interactions with host plants and natural predators. Indirectly, changes in climate can modify host plants and competitors, further complicating the effect on insect biology and phenology. Impact of elevated CO 2 levels on their host plants can affect growth rates, fecundity, and population densities of insects. Altered precipitation patterns, such as droughts and floods, affect insect survival and diapause. Further, there is significant implications of climate change on different aspects of insect ecology, including insect distribution, behavior, and communication. The climate changes are predicted to alter the geographic ranges and migration behavior of insect species, creating new ecological niches and removing low-temperature barriers. These changes can threaten food security and increase the latitudinal and altitudinal range of crop pests. It also affects natural enemies, which can decrease the plant defense system against insect pests. Additionally, climate change can affect pheromonal communication, including production to behavioral response, in insects that rely on long-range chemical signals for communication. The review paper highlights the potential impacts of climate change on insect biological, phenological and ecological aspects.


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How to Cite

Chandrakumara, K., Sau, A. K., Ankur, Rajesh, Aditya K Tanwar, & Hadimani, B. N. (2023). Variations in the Biological and Ecological Attributes of Insects Due to Climate Change: A Review. Indian Journal of Entomology, 86(1), 319–328.



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