Foraging under uniform risk from different types of predators

BMC Ecology

Table 1 Delayed effects of previous treatments on current treatments

OP	Variable	Food intake (g)			Nr of used trays
	Factor	df	F	p	df	F	p
1	Current treatment	2,24	1,11	0.35	2,27	0,2	0.84
	Previous treatment	2,24	2,75	0.084	2,27	3,98	0,03
	Curr. Treat.* Prev. treat.	2,18	4,31	0.03
2	Current treatment	2,17	7,76	0.04	2,20	6,82	0.006
	Previous treatment	2,17	0,05	0.04	2,20	1,67	0.21
	Curr. Treat.* Prev. treat.	2,10	2,14	0.17

The relative risk of the previous treatment (three risk levels: higher, lower, or same risk) compared to the present treatment (three risk levels: high, medium, or low) shows a significant impact on variables obtained after a change of treatment. During the first observation period (OP 1, 0–6 hours after change of treatment), the previous and current treatments interact significantly. In the second OP (24–30 hours after change of treatments), only the current treatment causes the significant effects. 11 bank voles served as experimental foragers.

ISSN: 1472-6785