Chapter 7

Question 1

Mating system

Answer 1

The ways in which animal societies are structure in relation to sexual behavior

Polities religions and culture

Question 2

The Mating systems

Answer 2

Polyandry- one female, many males

Monogamy- one man one woman

Polygyandry- open marriage

Polygyny- one male, many females

Question 3

Advantage and disadvantage of polygamy

Answer 3

Advantage: Increases the variance and reproductive success in the sex that has more than one mate per season

Disadvantage: reproductive success is not equally distributed within male species and between both species

Question 4

Effects of polygany on females

Answer 4

Females have low productivity and shirt lived

Mate shortly after becoming an adult

Females group closely

Question 5

Cooperative polyandry

Answer 5

All males defend their territory

Mate equally

Feed and incubate offspring

Question 6

Resource defense polyandry

Answer 6

Females defend super territories of smaller territories

Question 7

Benefits of poly android mating

Answer 7

Sperm replenishment- sperm supply

Material benefits-nutrients, protection

Genetic benefits-no inferior sperm

Convenience

Question 8

What determines the form of polygamy

Answer 8

Incentive

Parental care costs

Opportunity

Sex ratio

Question 9

Polygyny threshold model

Answer 9

Model developed to predict whether a mating system will be monogamous or polygamous

Question 10

Social pair bonding

Answer 10

The pair bond with one partner but meet with multiple partners during breeding season

Question 11

Sperm competition factors

Answer 11

Body size vs testes size

Time of copulation

Sperm velocity