I study evolution of life history traits, especially laying emphasis on how ecology contributes to it. The main focus of my research is on understanding how organisms evolve in response to unfavourable changes in biotic and abiotic factors (e.g. pathogens, parasites and nutrition) within its environment. What is the physiological, behavioural and morphological basis of such adaptations? What are the associated trade-offs? Another focus is on understanding the genetic basis of neglected intra-specific interactions (e.g. Cannibalism) and its contribution to the evolution of other life history traits. To address these questions, I use experimental evolution, artificial selection, molecular genetics, physiology, immunology and neurobiology in the well-studied model system, Drosophila melanogaster.