Benefits Of Helping Flashcards
1
Q
What are the three main benefits of helping?
A
- Territory defence
- Nest guarding (predators)
- Feeding
2
Q
How does helping affect offspring survival?
A
There are correlations between breeding success and the number of helpers.
3
Q
What is the impact of removing helpers on breeder survival?
A
There is an 8-39% reduction in survival with the removal of helpers.
4
Q
Direct benefits of helping:
A
- Territory inheritance
- Gaining experience
- Future mate acquisition
5
Q
Kin selection:
A
Helping behaviour should evolve according to:
-The probability that the recipient shares the gene or genes in question - r
-The cost/benefit ratio of the altruistic behaviour
-Hence : rB>C
6
Q
Direct fittness + indirect fittness = inclusive fittness
A
7
Q
Why stay at home:
A
-Increased survival prospects
-Chance of successful dispersal (+breeding success) is low
-Possibility of territory inheritance (males)
