Can we control marine invasive alien species by eating them? The case of Callinectes sapidus

The management of invasive species is a current challenge for the conservation of biodiversity. One approach is their utilization as a food source. In this study, 2040 French people were interviewed to assess crustacean consumers’ receptivity to this new species and its desirability as a food. The crab’s appearance (shape and color) had no effect on consumers’ opinions. Remarkably, 96% were willing to support culling blue crabs in French waters by purchasing and consuming them, mostly in restaurants and fish stores. They were ready to pay €15–€19 for a dish in restaurants and €8–€10/kg in fish stores, reflecting awareness of market prices for similar species. Importantly, the youngest French adults see eating blue crab as an act of environmental protection and civic engagement. The study showcases a comprehensive survey that could guide governments in managing this invasive species effectively.