Fisheries:

Question 1

What are two factors that make fisheries managment challenging for sea urchins?

Answer 1

1. Variable growth and mortality
2. Recruitment overfishing = when high fishing rates reduce abundance of mature, individuals impairing recruitment

Question 2

What are two factors that make fisheries managment challenging for crustaceans?

Answer 2

1. Climate change forcing species to migrate into cooler waters
2. Disease

Question 3

What are two factors that make fisheries managment challenging for molluscs?

Answer 3

1. They are spatially discrete
2. They have variable recruitment

Question 4

What are two factors that make fisheries managment challenging for sponges?

Answer 4

1. Lack of data
2. Regulation
3. Algal blooms - block the sponges pores

Question 5

What are two factors that make fisheries managment challenging for corals?

Answer 5

1. Slow recovery
2. Climate change - thermal stress can lead to bleaching

Question 6

What are ten characteristics that would make a marine invertebrate species particulalry suitable for aquaculture?

Answer 6

1. High economic value
2. Large amount of biomass produced per hectare
3. High fecundity
4. Fast growth
5. Reach maturity fast
6. Ease of rearing larvae
7. Provides habitat
8. Improves water quality
9. Ease of breeding
10. Low trophic level