Chapter 13 Part 2

Question 1

what is one of the primary benefits of grouping?

Answer 1

access to offspring care

Question 2

male wild turkeys engage in what type of social behavior

Answer 2

cooperative courtship; brothers cooperate to find mates

Question 3

what percent of insect species are eusocial?

Answer 3

2%

Question 4

cooperative breeding

Answer 4

social system in which 2+ individuals care for young

Question 5

cooperative breeding occurs in ____% of mammals, ______% of birds

Answer 5

1) 5%

2) 10%

Question 6

what is a main component of cooperative breeding groups

Answer 6

nonbreeding helpers

Question 7

In birds, nonbreeding helpers tend to be (male/female) whereas in mammals nonbreeding helpers tend to be (male/female)

Answer 7

1) male
2) female

the result of sex biased dispersal (in birds female-biased dispersal and in mammals male biased dispersal)

Question 8

among cooperative grouping pied kingfisher, primary helpers raised their fitness (directly/indirectly) in the (1st/2nd) year and secondary helpers raised their fitness (directly/indirectly) in the (1st/2nd) year

Answer 8

1) indirectly
2) 1st
3) directly
4) 2nd

Question 9

group augmentation

Answer 9

individuals survive or reproduce better by living in larger groups

Question 10

load lightening

Answer 10

helpers reduce the workload of parents in offspring care

Question 11

cichlids form (kin/non-kin) social groups and offers support for what hypothesis because of their behaviors?

Answer 11

non-kin, pay to stay hypothesis

Question 12

habitat saturation

Answer 12

occurs when territories or breeding sites are limiting to a population because most of the best sites are already occupied by other members of that species

Question 13

what is a central idea behind ecological constraints hypothesis (a reproductive behavior)

Answer 13

delayed dispersal

Question 14

redirected helping

Answer 14

among bird species, the harassment of young males by their fathers so that they will stop courting potential mates and return to the nest to help

Question 15

social vertebrates engage in (facultative altruism or obligate altruism)

Answer 15

facultative; they remain helpers only for so long and maintain reproductive capabilities

Question 16

singular breeding

Answer 16

a form of cooperative breeding system in which social groups contain only one breeder of each sex
(ex. meerkats)

Question 17

plural breeding

Answer 17

a form of cooperative breeding system in which social groups contain more than one breeder of at least one sex (ex. banded mongoose)

Question 18

evolution of cooperative breeding tends to be associated with what type of reproductive relationship?

Answer 18

monogamy