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. 2009 Dec 18;76(4):1021–1027. doi: 10.1128/AEM.01804-09

TABLE 1.

Oocyst retention and biofilm thicknessa

Season % Oocysts ± SE
Avg biofilm thickness (μm)
In biofilm at end of dosing (day 3) In biofilm at end of expt (day 8) Accounted for in flow system
Summer 2008 64 ± 3.2 28 ± 0.05 107 ± 0.93 42 ± 3.5
Fall 2008 46 ± 4.5 24 ± 0.67 104 ± 0 28 ± 5.1
Winter 2009 72 ± 0.89 47 ± 3.2 97.5 ± 0.51 34 ± 10
Spring 2009 78 ± 1.4 65 ± 1.7 94.5 ± 0.53 25 ± 11
Winter 2009 (20°C) 77 ± 0.62 54 ± 1.4 94.5 ± 1.6 30 ± 12
Winter 2009 (5°C) 76 ± 0.31 53 ± 2.7 103.5 ± 0.48 33 ± 11
a

The table presents a summary of the percentage of oocysts attached to each biofilm at the end of the dosing period (day 3) and end of the experiment (day 8), the total percent of oocysts accounted for in the flow system, and the average biofilm thickness for each set of seasonal biofilms. All errors are percent standard error (n = 2, except biofilm thickness, where n = 8).