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A mating system in which one male and one female form an exclusive mating relationship for a period of time.

A mating system where a male mates with several females.

Groups composed of unpaired males that live together and may cooperate or compete for access to females.

A mating system where an individual has only one mate at a time, but multiple mates over the course of its lifetime.

A mating strategy where an individual improves the reproductive success of relatives, often at a cost to their own reproduction.

A reproductive system where an individual changes sex during its lifetime.

A strategy where an individual starts life as a male and transitions to a female.

Males that adopt alternative mating strategies to sneak copulations without confronting dominant males.

A reproductive strategy where one species lays its eggs in the nest of another species.

A system closely related to resource defense, where males primarily guard the females directly.

A reproductive pattern where individuals gather in large numbers for a short, intense period of mating activity.

A strategy where an individual mates with a partner outside their primary mating pair.

Similar to lekking, but the competitive displays involve physical locations that are defended by males.

A mating system where a female mates with several males.

A system where males control resources that are attractive to females, thereby gaining mating opportunities with multiple females.

A mating system where both males and females have multiple mating partners in a given breeding season.

A strategy where an individual starts life as a female and transitions to a male.

A system where multiple males and multiple females mate to form a breeding network.

A system where individuals help raise offspring that are not their own, usually within a family group.

A system where one male controls access to a group of females, defending them from other males.

A reproductive strategy where males gather in a specific area to display for females.

Males that stay near attractive males to intercept females that are drawn to the displays of those males.

A situation where the typical mating roles are opposite, with females competing for males.

A reproductive strategy where a male stays close to a female to prevent other males from mating with her.