monogamy
a system where males and females only have one mate during one breeding season
Polygyny
a mating system in which the male fertilizes the eggs of more than one partner during one breeding season
Polyandry
a mating system in which a females eggs are fertilized by more than one male during breeding season
extra pair copulations
mating with an individual other than your social partner
nuptial gifts
a gift, usually of food, in exchange for mating
sexual suicide
offering oneself as the nuptial gift
mate guarding
when one partner stays with its mate to prevent mating with others