BIOSC-101 Lecture Notes - Lecture 31: Distraction Display
21 Dec 2020
School
Department
Course
Professor
Document Summary
Signaler transfers information to the receiver e. g. acoustic, chemical, visual. E. g. potential mate, intruder, predator: illegitimate receiver: A receiver that uses a signal to the fitness disadvantage of the sender. Types of signals: honest and dishonest: honest signal: *costly to produce and maintain (otherwise everyone would no longer true/honest) e. g. carotenoids in birds and fish (produce yellows, oranges, and reds in appearance) Can"t be used elsewhere in body (e. g. not in immune system) More costs: increased visibility to predators, increased aggression from rivals. Foraging ability may be indicative of parenting ability. Agonistic behavior: social behavior that is linked to fighting and occurs within a species e. g. stalk-eyed flies. *threat displays: symbolic act providing information to opponent about fighting ability. If- large asymmetry in potential fighting ability no escalation to a fight. If- lack of asymmetry escalated contest (fight) e. g. marine iguanas. If- lack of asymmetry escalated contest (fight) e. g. marine iguanas e. g. stalk-eyed flies.
