TERM: Description of glossary term.
Fish related glossary
facultative
The ability to give appropriate alternative responses under different conditions. Facultative fitness is a measure of the success of an individual in leaving progeny in the next generation, typically with regard to other individuals in the species and thus as relative fitness. In a fuller form, called Darwinian fitness.
Odniesienie bibliograficzne
Barlow, George. 2002. "The Cichlid Fishes (Nature's Grand Experiment in Evolution)". Perseus Publishing. 352 - (ffm03927)