Feeding Behavior Flashcards
(18 cards)
deprivation to measure hunger
not reliable or constant
rate of feeding
how much food over time has a large impact on hunger
lateral hypothalamus
lesions created aphasic rats; hunger center
ventro-medial nucleus in hypothalamus
lesions created hyperphagic and obese rats; satiety center
rats and stomach tubes
just a full stomach is not enough to cause satiety; role of cholecystokinin
external factors control feeding behaviors
recess in nursing calves, allelomimetic behaviors in horses and cattle
thirst can be activated by
renal system (ADH), changes in plasma and vascular system (lateral pre-optic hypothalamus), intracellular changes
dehydration
pH can drop with dehydration, brain cells die first
eliminative behavior
relieve of waste products, mark territories, sexual advertisements
optimality theory
predict cost-benefit ratios of actions; decisons–currency–constraints
foraging models
prey models and patch models
aggressive mimicry
lure food to itself
social behavior
defending a territory, group feeding
stalk and rush
lions and wolves
coursers
african wild dogs, hyenas
scavengers
hyenas, vultures
defenses against being food
groups of prey, escape and freezing, deception, toxicity, mimicry, distraction
groups of prey
encounter effect and dilution effect, increased detection of predators, confusion effect, mobbing
