Concepts 18.1-18.3

Question 1

What are pests and weeds?

Answer 1

Organisms with populations that are “too large”

Question 2

What is the ‘enemy release hypothesis’?

Answer 2

• When species are introduced usually there enemies aren’t
• Without enemies population of introduced species are less limited

Question 3

What is classical biological control?

Answer 3

The deliberate importation and release of new species

Question 4

What is augmentative biological control?

Answer 4

Repeated rearing and release of natural enemies

Question 5

What is conservation biological control?

Answer 5

Promoting or protecting existing natural enemies

Question 6

What are the key to success for classical biological control species?

Answer 6

• Host specificity
• High reproductive rates
• Good searching ability
• Must occur at same time as host

Question 7

What is inoculative augmentation?

Answer 7

Control by released enemies and their progeny

Question 8

What is inundative augmentation?

Answer 8

Control exclusively by the released enemies

Question 9

How can conservation biological control be developed?

Answer 9

Providing
- Food sources
- Permanent shelter or habitats
- Favourable microclimates
- Alternate prey or hosts

Question 10

What is an epidemic disease?

Answer 10

Increase rapidly in smaller geographic areas

Question 11

What is an endemic disease?

Answer 11

Constantly present in a population subset

Question 13

What are some options for disease control?

Answer 13

• Vaccination
• Culling
• Behavioural modifications (e.g. quarantine)
• Reducing vectors