BIO 121 Lecture Notes - Lecture 16: Opportunity Cost, Reciprocal Altruism, Proximate And Ultimate Causation
10 Dec 2020
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Document Summary
Activity of life at level of individual: competition, predation, co-operation, social behavior. Instead of a nervous system, plants rely on hormone and cell signaling pathways. Plants respond to stimuli like: light, moisture, touch, gravity. Responses may be slower than we are accustomed to considering. Thigmotropism: plant responds to touch or contact stimuli. Amount invested in doing an action vs. saving not doing. Increase chance of being injured/killed because of behavior. Benefit lost by not performing other behaviors during same time. Feeding behavior: how and where food> what type of food> forage alone/group. Territory behavior: animals select habitats based on suitable conditions for survival and reproduction. Aggressive behavior to actively deny other animals access to a habitat or resource. Require energy, cause predation susceptibility, detract from time parenting, mating, feeding. Home range: area an animal normally uses during a year. Sizes vary with food, foraging strategy, body size, metabolic needs.
