4. Mating Systems

Males mate with multiple females and females mate with multiple males without creating a lasting social bond

Promiscuity

A single individual of one sex forms long-term social bonds and mates with more than one individual of the opposite sex

Polygamy

A social bond between one male and one female through the period of rearing offspring

Monogamy

Males mate with more than one female; females mate with only one male

Polygyny

In polygyny, males either defend ______ that attract females looking for resources, or they defend _____ ___ ____ directly

territories
groups of females

In polygyny, what sex provides the majority of parental care?

Females

Females mate with more than one male; males mate with only one female

Polyandry

In polyandry, females invest more energy ___-fertilization and males invest more energy ____-fertilization

pre
post

In monogamy, which sex parent invests the most in the progeny?

Both equally

Monogamy is selected for in environments where

parental care is needed from both parents to successfully raise young

Since males are needed to provide parental care in monogamous systems, they cannot

capitalize on their high potential for reproductive success

When an individual that has a social bond with a mate also breeds with other individuals

Extra-pair copulations

Behavior in which one partner prevents the other from participating in extra-pair copulations

Mate guarding