Fig. 2From: Distribution and current infection status of Biomphalaria straminea in Hong Kong a, b Pictures of B. straminea snails captured in the field with red- and black-coloured shells. c Picture of B. straminea snails maintained in the lab with red-coloured shells. Note that the black eyespots are present in B. straminea with both red- and black-coloured shellsBack to article page