Lecture 6 - Territoriality

Question 1

What is the Economic model of territoriality

Answer 1

Economic Defendability

Benefits = exclusive access to limited resources

Costs = increased chance of injury, energy expenditure, reduced foraging

Ex. Blackbirds only defend when sufficient resources are present.

Question 2

Factors that affect Economic defence

Answer 2

1 Competitor Density

2. Resource Density
3. Spatial Clumping
4. Temporal Clumping
5. Spatial and Temporal predictability

Question 3

What size of Territory?

Answer 3

Resource economical to defend?

Who is territory being defend against?

• Conspecifics and Heterospecifics are competitors
• Heterospecifics differ in diet overlap.

As diet overlap increases, competition increases.

Question 4

What is Consumer Resource Ratio (CRR)?

Answer 4

Operational sex ratio

• Number of potentially mating males / number of fertilizable females
• Significantly influences mating competition or strategies

Question 5

Can OSR be generalized to any consumer-resource system?

Answer 5

?????

Question 6

What is the Dear Enemy?

Answer 6

Reduction in cost of defence by defending near familiar neighbours

-Passive vs. Overtly agressive

Question 7

What is Hawk-Dove Model

Answer 7

write this down on a paper

Question 8

What is Producer-Scounger Model?

Answer 8

Write this down on a paper