Fig. 1From: Recent large-scale philophthalmosis outbreak in Portugal: inefficacy of common antihelminthic agentsIntensity of infection by eye-flukes in the analyzed gulls (Larus fuscus and Larus michahellis). Infections by Philophthalmus lucipetus are shown in blue. The rare infections by Philophthalmus lacrymosus are shown in redBack to article page