Chapter 13 - Mating Systems Flashcards
Mating Systems
Description of social assocaitions + # of sexual partners an indiv. has during one breeding season
Sexual Conflict
Differential selection on males + females to max. fitness
Female Defense Polygyny
A mating system in which a single male monopolizes and mates with two or
more females.
Resource Defense Polygyny
A mating
system in which a male mates with multiple females that are attracted to resources he defends.
Male Dominance Polygyny
A mating system in which a few males on a lek mate with many females
Territorial Cooperation Hypothesis
The hypothesis that two
individuals (one of each sex) can better defend a critical resource, such as a safe refuge, than can a single individual, and
thus selection may favor pair formation
and shared defense.
Mate Guarding Hypothesis
The hypothesis that selection favors males
that mate with and guard one female over one or more reproductive cycles by remaining in close association with her
Polygyny Threshold Model
A model that predicts the occurrence of polygyny
based on the amount of resources available to females in male territories.
Hotspot Hypothesis
The hypothesis
that all males can benefit by aggregating in a location where they
are likely to encounter many females.
Hotshot Hypothesis
A proposed
explanation for the evolution of leks. It states that males can increase their encounter rate with females by aggregating near an attractive male.
Scramble Competition
The indirect
competition of individuals to find and
secure copulations with multiple mates
Social Mating System
The social
associations and presumed mating
behavior of individuals based on those
associations.
Genetic Mating system
A description
of the mating system based on the actual number of sexual partners in a social mating system that contribute to a set of offspring.
Extra Pair copulations
The copulations of a pair-bonded individual
with a third individual outside the pair bond
Genetic Quality Hypothesis
The hypothesis that females that engage in
multi-male matings can improve the fitness of their offspring via genetic
mechanisms.
