Table 1.

Percentage of infected individuals at each dose level. (All control treatments remained uninfected for all host clone–parasite isolate combinations. Cells marked in italics represent entries for those combinations which were included into the mathematical analysis.)

	Daphnia clone
dose	HO2	M10	DG	Mu10	B2	HO1	Mu11
P1
80	0	0	0	0	0	0	0
400	29	0	22	0	0	0	0
2000	27	23	33	0	0	0	0
10 000	11	46	90	0	0	0	0
50 000	75	92	83	0	0	0	0
250 000	83	93	83	0	0	0	0
1 250 000	100	92	91	0	0	0	0
6 250 000	100	100	92	0	0	0	0
P4
80	0	0	0	0	0	0	0
400	9	0	0	0	0	0	0
2000	43	36	0	0	0	0	0
10 000	64	54	0	0	0	0	0
50 000	85	86	0	0	0	0	0
250 000	100	79	0	9	0	0	0
1 250 000	93	100	0	38	15	0	0
6 250 000	100	100	0	85	14	10	0