LIFESCI 2D03 Chapter Notes - Chapter 12: Subdominant, Zygosity, Peafowl
16 Dec 2016
School
Department
Course
Professor
Document Summary
Mating systems are the social associations and number of sexual partners an individual has during on breeding season. In some mating season, individuals live in close association with one another during the breeding season and form a pair bond. Emlen and oring argued that mating systems can be understood by two factors: evolutionary: sexual conflict, differential selection on males and females to maximize their fitness, ecological: effects of resource limitation and distribution. Suggest that for a female, selection will favour a mating system that provides the greatest access to resources: monogamy or polyandry (one female, multiple males) Female defense polygyny occurs when males monopolize aggregations of females directly (single male monopolizing two or more females) Polygynandry (plural breeding) is rare but does occur in some social species, particularly in mammals that defend a territory from other such groups i. e. african lions. Promiscuity evolves when the benefits of social living are low.
