Fig. 5From: Freshwater snails of biomedical importance in the Niger River Valley: evidence of temporal and spatial patterns in abundance, distribution and infection with Schistosoma spp.a Bulinus truncatus modelled abundance of shedding snails by locality (χ2 = 41.7, df = 19, P < 0.002). b B. truncatus modelled abundance of shedding snails by site type (χ2 = 15, df = 6, P < 0.02). c B. truncatus modelled abundance of shedding snails by month (χ2 = 62.3, df = 11, P < 0.001).Back to article page