BIOL 1902 Lecture Notes - Lecture 19: Bluegill, Clasper, Nuptial Gift
21 Nov 2016
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Document Summary
Male ruffed grouse use neck ruff and tail displays neck feathers are called ruff (reasoning for name) Many fireflies use aerial light displays light is a chemical reaction in a chamber. Swans have choreographed synchronized displays both males and females. Sandhill cranes perform ritualized dances both males and females. Wild turkey has communal display grounds (leks are displaying sites) use their tails for display and dance for the females. Male sharp-tailed grouse also dance in communal display grounds the males gather in leks, the best dancers (only the top dancers; ex. 3 out of 12) get all the female (20) mating opportunities. Chemical advertisements = olfactory advertisements called sex pheromones: ex. They roll in the pit, picking up pheromones called wallow pits (also called rut pits) rut pits give off information. Female snakes leave pheromone trails male snakes smell the pheromones and track the females.
