Predation

Question 1

What is predation?

Answer 1

Very broadly- any consumption of one organism by another

More narrowly- consumption of another organism resulting in its death

Question 2

Predation is foraging

Answer 2

Where to hunt, when to more on and what to do with competitors.

Question 3

Modes of hunting

Answer 3

Pursue, chasing, Stealth, Sit and wait.

Question 4

Stages of hunting

Answer 4

-Search, Detect, Attack, Capture and consume.

Question 5

Red Queen (Van Valen 1973)

Answer 5

Predators and prey evolve in reaction to each other. If predator searches, then they evolved better vision and in reaction the prey evolved camouflage.

Question 6

Risk to predators

Answer 6

In a large group there is a risk to the predator as they may attack. But if predators prey on small groups then they risk not catching one.

Question 7

Sociality as anti-prey strtergy

Answer 7

• Byrne (1981) More compact with rick

- Kummer et al (1985) larger with risk

Question 8

Evolution of group living

Answer 8

-Enables group defence of food resources (Wrangham, 1980)
-Provides protection from predators or infanticide (Van Schaik, 1983)
The bigger the group the less the risk of predation but the less resources each individual has.

Question 9

Why hunt?

Answer 9

-Nutrition (teleki, 1973)
-Hunting for trade-goods?
Meat for sex or male social bonding
-Hunting to assess reliability
Hunting to display prowess
Show off
Hunt together, patrol together