Chapter 08: mating systems

Question 1

monogamy

Answer 1

only one partner

Question 2

serial monogamy

Answer 2

only one partner for a given breeding szn

Question 3

why should males be monogamous?

Answer 3

1. recources might be limited
2. might be too difficult for female to raise offspring alone

Question 4

extrapair copopulations (EDC’s)

Answer 4

monogamous birds engaged in cheating “one night stands”

Question 5

socially monogamous

Answer 5

have a primary breeding partner, but also EPC’s on the side (main hoe and a roster)

Question 6

genetically monogamous

Answer 6

truely monogamous relationship

Question 7

what are benefits of EPC’s?

Answer 7

males can mate with more females
maximize genetic diversity

Question 8

fertility insurance hypothesis

Answer 8

increase probaility that all eggs are fertilized

Question 9

polygamy

Answer 9

multiple partners for either male or female

Question 10

polygyny

Answer 10

male has many females

Question 11

polyandry

Answer 11

female has many males

Question 12

female defense polygyny

Answer 12

one male defends a group of females and can mate with all of them

Question 13

lekking

Answer 13

males set up and defend small areas called leks
females come to chose a mate

Question 14

sexy-son hypothesis

Answer 14

females are choosign the best - looking males so their sons will be able to attract the next generation

Question 15

how do males benefit form lekking?

Answer 15

1. chosen one benefits big time
2. leks can be compromized of relatives which increases fitness

Question 16

how can one go from monogamy to polygyny?

Answer 16

can evolve due to recources

Question 17

monogamous provides?

Answer 17

provides higher fitness to females
- males provide more parental care

Question 18

polygynous fitness?

Answer 18

provides higher fitness for males
- can have more offspring

Question 19

polygyny threshold model

Answer 19

used to help predict when a female should choose polygyny or monogamy

Question 20

females should _____

Answer 20

choose the best territory and be monogamous

Question 21

shoreboard species

Answer 21

female competes, male incubates the eggs

Question 22

promiscuity

Answer 22

multiple partners for males and females within the same breeding season
- no co parenting (pair bonds)
- males provide no parental care

Question 23

polygynandry

Answer 23

more than one male formes a pair bond with multiple females
- female can have many helpers

Question 24

co parenting

Answer 24

pair bonds

Question 25

multiple mating systems

Answer 25

mating systems are fluid

Question 26

polyandy success?

Answer 26

lowest success

Question 27

polygynandry

Answer 27

sharing 2-3 females with 1 male

Question 28

polygyny

Answer 28

highest success

Question 29

females set up territories based on ________

Answer 29

recources

Question 30

males set up territories based on __________

Answer 30

female distribution