Polygyny

Question 1

costs of polygyny (females)

Answer 1

less parental care
less genetic diversity
infanticide risk + bruce effect
increased competition between females for food/mates

Question 2

benefits of polygyny (females)

Answer 2

group defense of territory
polygyny threshold model benefits
increased resources
less extra-pair copulations than in monogamy
males themselves usually ‘stronger’ (as dominanted/fought others)
less annoying males

Question 3

costs of polygyny (males)

Answer 3

less genetic diversity (one male sires all)= increases inbreeding chance

extra-copulation fear (due to difficulty of monopolization)= high intragroup male-male competition

males have short tenure/vulnerable to attack

infanticide= means kids dont always live

women might ‘bully’ male

small balls (maybe a cost?)

Question 4

benefits of polygyny (males)

Answer 4

increased fitness

continuis access to females (increased reproductive success)

Question 5

Scramble competition polygyny

Answer 5

polygyny in which males make no effort to defend individual exclusive mating territories, but instead attempt to outrace their competitors to receptive females

Question 6

where is polygyny common

Answer 6

nocturnal prosimians and orangutatns

Question 7

orangutans and polygyny

Answer 7

female orangutatn= need to find food for themselves

male orangutatns= are sexuall dimorphic hence one male dominantes a female (large canine and cheek pads, etc)

developmentally arrested orangutans in contrast slip in and out and rape females