TABLE 3.

Paramecium distribution in the presence of various chloroviruses

Virus (type) or other treatment	Target or stat	Replicate expt avg valuea
CVM-1 (Pbi)	Virus	48	68.5	67.75	77	83.75
	VSB	35.5	52	38.25	21.25	34.25
	Pond water	12.25	21.5	24.25	32	36.5
	Chi-square	20.63	24.02	22.71	40.30	30.34
	P	5.59E−06	9.51E−07	1.88E−06	2.18E−10	3.62E−08
TN603 (SAG 3.83)	Virus	75.25	57.75	82	55	39
	VSB	45.75	26.25	38.75	17.25	21.75
	Pond water	34.25	21	31.25	12.5	13.5
	Chi-square	17.29	22.58	29.62	38.39	13.68
	P	3.22E−05	2.02E−06	5.25E−08	5.78E−10	2.17E−04
Osy-NE-ZA1 (Syngen 2-3)	Virus	63.25	72.5	75	99.5	79
	VSB	20.75	27.5	32	37.25	32.5
	Pond water	20.5	15	23.75	33.25	30.5
	Chi-square	34.77	47.72	34.75	48.71	31.82
	P	3.70E−09	4.92E−12	3.75E−09	2.97E−12	1.69E−08
Control (non-choice test)	Pond water 1	40.25	39	42.5	41	78.5
	Pond water 2	49.25	53.25	52.5	40.5	74.25
	Pond water 3	33.75	29.5	39.75	33.75	49.25
	Chi-square	2.95	7.04	2.00	0.85	7.42
	P	0.086	0.008	0.157	0.356	0.006
Osy-NE5 (Syngen 2-3)	Virus	58.5	52	61	59.25	65
	VSB	18	25	24.5	19.75	28.5
	Pond water	13	24.5	22.5	19.25	31.75
	Chi-square	41.73	14.63	26.09	32.16	19.54
	P	1.04E−10	1.30E−04	3.25E−07	1.41E−08	9.81E−06
PBCV-1 (NC64A)	Virus	68.25	78.25	71.25	69	77.75
	VSB	20	21.25	19	15.25	13.25
	Pond water	21.5	35.75	23.5	21.5	23
	Chi-square	41.15	38.93	44.22	49.02	63.62
	P	1.41E−10	4.39E−10	2.93E−11	2.53E−12	1.51E−15
Control (non-choice test)	Pond water 1	25	16	33	25.75	31
	Pond water 2	28.75	17.25	31.25	16.75	19.25
	Pond water 3	30	18	24.75	18.25	25.25
	Chi-square	0.49	0.12	1.27	2.30	2.74
	P	0.49	0.73	0.26	0.13	0.10

^aData are the measured values and associated statistical data from each of five microcosms; the values represent the average of the blind-coded readings by at least four individuals. All virus concentrations were 1 × 10⁴ PFU/disk. The data are represented in Fig. 4.