Table 2.

Predation increases survival of Chrysomya rufifacies in laboratory no‐choice assays

Trial	N C (%Surv)	N T (%Surv)	p SurvCvT	p SurvSup	p SurvPredLevel
1	90 (98%)	96 (99%)	0.6111	0.2491	0.0938
2	89 (79%)	89 (91%)	0.0352	0.0118	0.0034
3	97 (72%)	119 (86%)	0.0173	0.0063	0.0013
Cochran–Mantel–Haenszela	–	–	0.0007	<0.0001	0.1722
Breslow‐Dayb	–	–	0.9501	0.5996	–
Overallc	276	304	0.0017	0.0003	<0.0001

Columns from left to right: Trial, number of individuals in control group (isolated C. rufifacies: N _C) with percent survival indicated parenthetically, number of individuals in treatment group (single C. rufifacies with Cochliomyia macellaria: N _T) with percent survival indicated parenthetically, percent of C. rufifacies surviving to eclosion (%Surv), p‐value of Fisher's exact test comparing survival rates between control and treatment (Surv_CvT), p‐value of Fisher's exact test evaluating the effect of supplemental food comparing survival rates between consumption (Partial and Total) and no consumption (Control and None) (Surv_Sup), and p‐value of Fisher's exact test comparing survival rates by Predation level in treatment groups only (Surv_PredLevel). Cells with a—indicate values which were not calculated because they were unnecessary or could not be calculated due to lacking data or a mathematical inability to calculate values. p‐Values in bold are those p‐values which are significant at an α = 0.05.

^aCochran–Mantel–Haenszel test for repeated tests of independence in which small p‐values indicate that there are significant differences between trials.

^bBreslow‐Day test for homogeneity of variances where a high p‐value means that there is no statistically significant difference between replicates in variance.

^cAll of the trials collapsed and analyzed together for overall patterns.