Fig. 2From: The role of prezygotic isolation mechanisms in the divergence of two parasite speciesHybridization frequencies of S. solidus and S. pungitii in their natural host. a Infection of lab-reared herring gulls and distribution of species in (b) allopatric and (c) sympatric combinations, determined by microsatellite typing of tapeworm larvae (n = 82 for each of 2 gulls) hatched from eggs isolated from the gull droppingsBack to article page