Project R-16218

Host–parasite and microbiome perspectives on blue crab invasions: space for time approach (Research)

This project investigates the ecological and parasitological impacts of the invasive blue crab (Callinectes sapidus) on Morocco's coastal RAMSAR ecosystems. Using a space-for-time approach across Atlantic and Mediterranean lagoons, we will explore invasion stages along a temporal gradient provided by the country's extensive coastline. The study focuses on how blue crab invasions affect native species and ecosystem health, particularly through shifts in parasite diversity and infection dynamics. We will compare dinoflagellates and digeneans to assess effects on parasites with contrasting life cycles: the former posing health risks to crabs and the latter to humans. By addressing parasite–microbiome interactions, an aspect rarely explored beyond single-species laboratory models, this research will contribute novel insights into host–parasite–microbe dynamics during biological invasions. Building on the combined expertise of the research teams, including recent publications on these parasite groups, the project integrates ecological and One Health perspectives. The objectives are to (1) assess ecological impacts via host–parasite interactions along invasion stages; (2) identify parasite transmission success along the invasion gradient; and (3) pioneer research on parasite–microbiome interactions in invasive species. This project will provide critical knowledge for managing invasive species and their implications for Morocco's Blue Economy.

13 November 2025 - 30 April 2028