Effects of hunger and tannic acid on food intake and foraging behavior in Microtus fortis

摘要: Abstract The influence of hunger and plant secondary compounds on food selection foraging behavior in Microtus fortis were measured this study. three selected kinds tannic acid with the cafeteria method. voles first offered ad libitum for a period 4 days. Food intake was recorded daily calculation average by each vole. calculated multiplied index (0, 25, 50, 75 or 100). Measurements made over consecutive nights 2–4 feeding bouts per animal night. results indicated that increased intake, but had no significant effects selection. 0% most preferred food, 6% least. Ingestion rate bite size severity hunger, frequency not significantly affected time bout slowly. When amount have been is 25% more than when they freely access to hungry increased. These suggested their mainly increasing hunger. changes herbivores sizes satisfy nutritional demands rather prolonged decreased defending reproductive activities increase intake.