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. Author manuscript; available in PMC: 2015 Apr 1.
Published in final edited form as: Acta Trop. 2013 Dec 31;132:64–74. doi: 10.1016/j.actatropica.2013.12.013

Figure 7.

Figure 7

Effect of five treatments on (A) snail fecundity (egg masses/adult snail) and (B) recruitment (new snail recruits/adult snail) in laboratory populations of Biomphalaria pfeifferi snails. “Removal” = manual snail recruit removal (by crushing weekly) plus 0.15g shrimp diet added daily; “3 prawns” = 3 M. vollenhovenii prawns (0.5–2g each) housed/tank plus 0.15g shrimp diet added daily, “single prawn” = 1 M. vollenhovenii prawn (0.5–2g) housed/tank plus 0.15g of shrimp diet added daily, food only = 0.15g shrimp diet added daily (no prawns or recruit removal), and neg control = a negative control whereby snails were only fed lettuce ad libitum. Bars sharing a letter are not significantly different.