Mating effort Flashcards
1
Q
Behavior and mating behavior studies
A
- Bowerbirds - attracts mate with a bower adorned with blue
- Dragonfly penises - Evolved to increase the lieklihood that the mate will fertilise the females eggs by removing other male sperm
- Collosabruchus beetle penis - has spines and will leave the female unable to mate again
- Stalk-eyed flies
2
Q
What are secondary sexual traits?
A
- Traits which do not include gentials but are present according to your gender
- Weapons
- Size dismorphism
- Elaborate displays
3
Q
What is potential reporduction rate?
A
how fast a individual can reproduce without any limitations
4
Q
Advantages of being “choosy”
A
- High investment in eggs
- Best mate quality aviable
- Rare-breeding opportunities
5
Q
Intra-sexual selection
A
Competition for males between individuals
6
Q
Inter-sexual selection
A
The “choosy” gender choosing a mat
7
Q
Antlers and Horns
A
- Often only males have them
- Not always for defence
- May be used for defence but different shapes in sexes
- Many sheds in winter when predation risks is highest
