The ecology of waterborne pathogens and in particular Vibrio cholerae, Aeromonas and Legionella Chironomids (Diptera; Chironomidae), fish and waterbirds as the natural reservoirs of V. cholerae The role of chironomid microbiota in maintaining homeostasis under stress conditions Plant bacteria interactions; floral nectar microbiota, flower pollinators and flower visitors and their role in plant fitness Bacterial taxonomy (novel species isolated from chironomid egg masses, raw milk and floral nectar)