What commercial fishing method is illustrated?

• Benthic trawling

• Pelagic longlining

• Purse seining

• Gillnetting

Which commercial fishing method is illustrated?

• Pelagic longlining

• Gill netting

• Purse seining

• Benthic trawling

Which commercial fishing method is illustrated?

• Benthic trawling

• Pelagic longlining

• Gill netting

• Purse seining

Which commercial fishing method is the most destructive to the marine environment?

• Pelagic longlining

• Benthic trawling

• Gill netting

• Purse seining

____________________ is the reproductive rate of a fish species and is measured by the number of gametes produced in a set time.

• recruitment

• sustainable yield

• mortality

• fecundity

By what means do fish populations increase in size?

• natural mortality

• emigration

• immigration

• reproduction

• harvesting

If harvests exceed MSY, fish populations will decrease.

• True

• False

By what means do fish populations decrease in size?

• natural mortality

• fishing mortality

• immigration

• emigration

Recruitment must be less than or equal to the sum of natural mortality + fishing mortality for the fishery to be sustainable.

• True

• False

Recruitment depends upon which of the following factors?

• Growth

• Habitat dependency

• Fecundity

• Age of reproductive maturity