BIOLOGY 130 Lecture Notes - Lecture 16: Mantis Shrimp, Trichromacy, Karl Von Frisch
Document Summary
Gathering info about the environment: perceiving the environment allows animals to respond to changes in the world around them. Kin: na ve hypothesis: since perception so important, evolution will favor animals with the best sensory systems. Ears that hear the best: perception is costly. Evolution favors animals to have minimal perception needed. Flies populations kept in the lab have relatively few challenges. Without predators, need to find food, etc. selection favored flies that have smaller eyes. Informed hypothesis: since perception so important, evolution will favor animals with the best sensory systems. Gathering information is costly, so evolution should favor sensory systems that are the most efficient. Eyes when vision is useful (i. e. not underground) Hearing in a range needed to communicate. Whirligig beetles have two sets of eyes. One set looks up to the sky. How is color perceived: reflection of wavelength off surfaces, white: all wavelengths reflected and perceived, black: no wavelengths reflected or perceived.
