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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 6.

Figure 6

Results of 90-day population regulation experiments using very small M. vollenhovenii (0.5–2g) prawns. Shown are the trajectories over time for snail eggs (A,E), hatchlings (B, F), juveniles (C, G), and new adults, not including the founding population (D,H) in prawn-treatment (solid lines) and control tanks (dashed lines). Small prawns strongly suppressed recruitment, despite their inability to consume adult snails, even with an increased standing biomass of snail eggs. Snails began to hatch at day 10 and then passed through successive size cohorts until they reached adult size by day 40–50.