Disease Ecology

Question 1

Disease ecology

Answer 1

Understanding the
relationships between pathogens,
hosts, and their environments.

Question 2

Epizootiology

Answer 2

How and why diseases in wildlife populations occur

Question 3

Pathogens

Answer 3

Infectious, disease producing agents
(bacteria, viruses)

Question 4

Etiology

Answer 4

Study of the cause of disease

Question 5

Reservoir

Answer 5

Population where a disease is dormant or active, providing a source for infection (e.g., bats with
rabies)

Question 6

Vector

Answer 6

Any organism that carries and transmits to host
from a reservoir

Question 7

Non-infectious diseases

Answer 7

Those caused by genetic disorders,
food, or the environment

Question 8

Infectious diseases

Answer 8

Those caused by infection of a host
with an organisms – a pathogen

Question 9

Why are infectious diseases more prevalent at certain times more than others?

Answer 9

All of the below (above)
A) Changes in pathogen
B) Changes in host populations
C) Ecological changes in the reservoir/vector population
D) Environmental change

Question 10

Disease and Apparent Competition

Answer 10

One species is can outcompete if it transmits a parasite to competitor

Question 11

Grey squirrels in Europe are acting as the ________ with respect to the Parapox virus impact on Red squirrels?

Answer 11

Vector

Question 12

Epizootic disease

Answer 12

meaning its an outbreak where large amounts of animals die (epidemic)

Question 13

Enzootic disease

Answer 13

Low occurrence (endemic)

Question 14

Measure of parasite fitness:

Answer 14

R0 = measure of parasite fitness
R0 > 1; epidemic
R0 < 1; pathogen extinction
R0 = 1; endemic