BIOL 1902 Lecture Notes - Lecture 18: Mating Plug, Anaphrodisiac, Ejaculation
22 Mar 2016
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Only males have them; rarely females do if they have hormonal problems. Aerial displays e. g. midges: e. g. Ebony jewelwing females have little patch on wings. Females say yes by fluttering wings, say no by flatly placing wings down: male fireflies use aerial light displays. Swans have choreographed mutual displays: sandhill cranes perform ritualized dances can jump as high as 2m, e. g. Leks where male birds gather together & display for females; dancing grounds. Attack pheromones = chemicals that evaporate in air quickly: e. g. yellow jacket wasps. Pheromones in animals often released w/ urine: female moose releases pheromones from urine, attracts bull moose. Bull moose hears urine, gets closer w/ the smell, licks air w/ tongue & pick up more pheromones. Inside moose"s mouth (roof), there"s massive sensory cells for analyzing # of things, such as pheromones. Roll in put, picking up pheromones called wallow pits: female snakes leave pheromone trails.
