Figure 1 from: Krailas D, Namchote S, Koonchornboon T, Dechruksa W, Boonmekam D (2014) Trematodes obtained from the thiarid freshwater snail Melanoides tuberculata (Müller, 1774) as vector of human infections in Thailand. Zoosystematics and Evolution 90(1): 57-86. https://doi.org/10.3897/zse.90.7306

Figure 1 - Occurrence of Melanoides tuberculata in Thailand. Closed symbol – M. tuberculata with infection; open symbol – M. tuberculata without infection.