The adaptive significance of predation on conspecifics in non-carnivorous species is unclear. Here Vijendravarma et al. show that predatory cannibalism in Drosophila larvae has hallmarks of a functional behaviour, is genetically variable, and is favoured during experimental evolution under nutritional stress.
- Roshan K. Vijendravarma
- Sunitha Narasimha
- Tadeusz J. Kawecki