Figure 4. Distribution of Pomacea canaliculata in mainland China, 2006/2007.
All field sites are located in a region delimited by the northern latitude 18°13′–34°50′ and eastern longitude 97°50′–122°07′. Also shown are the terrain and the waterways along with the point of introduction of P. canaliculata (Zhongshan city; red star). The elevation is depicted with green indicating the lowest elevation and red indicating the highest elevations.
