Simu text2: Exponential Growth

Question 1

Who are hemipera?

Answer 1

Insects with half wings, like bed bugs, soybean aphid etc

Question 2

What is parthenogenetic mean?

Answer 2

Ability to reproduce asexually and sexually

Question 3

What is the life cycle of aphids?

Answer 3

0. Colonize a field by spring
1. Deposit young ones
2. Nymphs develop into adults

Question 4

How many generations can an adult aphid population go through?

Answer 4

15 generations

Question 5

What is type 1 survivorship?

Answer 5

Majority of the mortality occurs at old age

Question 6

What is type 2 survivorship?

Answer 6

Mortality is not dependent on age, like fish, birds

Question 7

What is type 3 survivorship?

Answer 7

Majority of the death occur after birth (common for rapidly producing invertebrate species)

Question 8

What is survivorship?

Answer 8

Proportion of population that is expected to survive after birth

Question 9

When is percapita hightst in sigmoid curve?

Answer 9

At the smallest point of N

Question 10

Is predation density-dependent or independent?

Answer 10

Prey depend on predators, hence density-dependent

Question 11

what is ballooning?

Answer 11

Dispersal of animals via wind

Question 12

What is patch extinction rate?

Answer 12

The chance of population occupying the patch will go extinct.

Question 13

What is a meta population?

Answer 13

Set of sub population connected via dispersal.

Question 14

In basic metapopulation, what is P,c, dP/dt and e?

Answer 14

P” patch occupancy (which fraction of patches are occupied)

dP/dt : how patch changes over time

c: patch colonization rate, determined by how many emigrants move from occupied patches ro colonize empty patches

e: patch extinction rate, describing liklihood thayt an existing subpopulation will go extinct in one time period.