Psychology 3221F/G Lecture Notes - Lecture 4: Rumen, Optimality Theory, Gelada

• School: Western University
• Department: Psychology
• Course: Psychology 3221F/G
• Professor: David Sherry

Document Summary

Food has an impact of survival & reproduction so animals should be good at nding food. Can use this model to decide how to build a bridge. For foraging; strategy what food do you eat/not eat, how much time will you forage. Optimization criterion optimization of food intake, minimize time exposed to predators, Constraints amount of daylight, how much it can remember. Moose eat aquatic (3. 8kcal/g) & terrestrial vegetation (4. 3kcal/g) Plants on land have higher energy content. Minimum daily energy requirements of a moose are 14000 kcal. Intake: moose can only eat a certain amount in a day cant t more than 32,900ml in the rumen (stomach) food ferments. Aquatic vegetation has a higher volume than terrestrial 20ml vs 4ml. Therefore also has a rumen capacity constraint in addition to energy constraint. Sodium: moose have minimum sodium requirement (2. 57g) little bit in aquatic (. 003g) but non in terrestrial vegetation ,", must eat aquatic vegetation to meet this constraint.