Figure 1

Distribution of 18 populations of Biomphalaria glabrata sampled from Brazil, Venezuela and the Lesser Antilles. The distribution area of B. glabrata is indicated in grey on the left bottom map.
Distribution of 18 populations of Biomphalaria glabrata sampled from Brazil, Venezuela and the Lesser Antilles. The distribution area of B. glabrata is indicated in grey on the left bottom map.