Exam 2: Fisheries

Question 1

What are the three dynamic rate functions?

Answer 1

Recruitment, growth, mortality

Question 2

How to measure recruitment

Answer 2

birth rates, relative abundance

Question 3

How to measure growth

Answer 3

length and weight at two different ages

Question 4

How to measure mortality

Answer 4

age a sample

Question 5

Density-dependent

Answer 5

number of recruits dependent on # of spawners

Question 6

Density-independent

Answer 6

environmental conditions influence recruitment

Question 7

Additive mortality

Answer 7

total mortality increase with increase in harvest mortality

Question 8

Compensatory mortality

Answer 8

natural mortality changes in response to harvest mortality such that total stays the same

Question 9

Standing crop/stock

Answer 9

number or biomass present at certain time

Question 10

Production

Answer 10

biomass accumulated during 1 year

Question 11

surplus

Answer 11

portion that can be removed without adverse effect

Question 12

Application of genetics to management and conservation

Answer 12

Population structure
Parentage
Sex determination
Individual identification
Propagation
Tagging
Threatened and endangered species

Question 13

phenotypic plasticity

Answer 13

Ability of organism to change phenotype in response to environment

Question 14

stock

Answer 14

population or group of population within a species that have a common ancestor and are adapted to a similar environment

Question 15

species

Answer 15

a natural occurring group of organisms that successfully interbreed and produce viable offspring

Question 16

Allopatric speciation

Answer 16

physical isolation between populations (more common)

Question 17

Sympatric speciation

Answer 17

resource partitioning and sexual selection lead to isolation between populations that live in same area

Question 18

Evolution

Answer 18

temporal change in allele frequency due to different survival of offspring