Evolutionary Psychology (8b) - Mating Systems II

What is polyandry

Single female mates with multiple males
What is polygyny?

Single male mates with multiple females
Heterozygote

Different alleles at the same locus
Costs of polyandry
- Time and energy (searching for mates)
- Sexual coercion of the female
- STDs
Types of polygyny
- Female defence polygyny
- Resource defence polygyny
- Scramble competition polygyny
- Lek polygyny
Females tend to be dispersed according to

Resources
Males tend to be dispersed according to

Females
Mating system associated with clumped resources

Polygyny
What is scramble competition polygyny

Non territorial males search widely for females
What is lek polygyny?
- When males temporarily cluster together for mating
- Males perform to attract females
- Like a career fair, for mating
Theories for why males group together (in leks)
- Hotspot hypothesis
- Female preference hypothesis
- Hotshot hypothesis
What is promiscuity?
- When lots of males mate with lots of females and vice versa
- Polyandry and polygyny at the same time
Promiscuous mating system which includes pair bonds

Polygynandry

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Card Set

Evolutionary Psychology (8b) - Mating Systems II

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Updated

2022-12-12T01:41:08Z

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