ANTRHO105 Exam 3 - Section 1 Social Behavior & Reproductive Strategies - VOCAB ONLY

polyandry

One female mates with multiple males.

polygynandry

Both males and females mate with multiple partners.

polygyny

One male mates with multiple females.

alloparental care

Care of offspring by individuals other than their parents.

mating system

The pattern of mating relationships among individuals.

reproductive strategy

Traits/behaviors that increase reproductive success, without requiring conscious intent.

reproductive success

Contribution of offspring to subsequent generations; producing offspring that survive and reproduce.

reproductive skew

How unequally reproduction is distributed among individuals: high skew means a few monopolize it.

sexual selection

Selection through differences in mating or fertilization success.

intrasexual selection

Competition within one sex for mating opportunities.

sperm competition

Competition among sperm from different males to fertilize eggs.

sexual dimorphism

Average differences in morphology between females and males of a species.

intersexual selection

Mate choice involving preferences for partners of the other sex.

infanticide

Killing an infant; in the takeover example, it can increase a male's future reproductive opportunities.

estrus

A period of sexual receptivity, often associated with fertility; receptivity can also occur outside conception periods.

muriqui

A Brazilian New World monkey known here for egalitarian social relationships and low reproductive skew.

egalitarian

Relatively equal social relationships, with little aggressive dominance or monopolization.