ENVS 1030 Study Guide - Sex Pheromone, Semiochemical, Allomone
27 Nov 2013
School
Department
Course
Professor
Document Summary
Semiochemical: a chemical emitted by a plant or animal that evokes a behavioral or physiological response in another organism. Allelochemical: when the semiochemical affects an individual of a different species. Pheromone: when the semiochemical affects an individual of the same species. Allomone: an allomone is any chemical substance produced and released by an individual of one species that affects the behaviour of a member of another species to the benefit of the originator but not the receiver. Production of allomones is a common form of defense, such as by plant species against insect herbivores or prey species against predators. Kairomone: a kairomone is a semiochemical, emitted by an organism, which mediates interspecific interactions in a way that benefits an individual of another species, which receives it, without benefitting the emitter. Two main ecological cues are provided by kairomones; they generally either indicate a food source for the receiver, or give warning of the presence of a predator.
