Fisheries Flashcards
(20 cards)
Stock
Particular subset of a population of fish or shellfish that is targeted by a fishery - portion of the population that is harvestable
Landings
Quantity of fish that are caught and brought to shore
Bycatch
Unintentional capture of non - target species during fishing activities
In the US, which region has the highest landings? Second highest?
North Pacific (Alaska), then Gulf of Mexico
In the US, which region has the highest revenue? Second highest?
North Pacific and then New England (scallops)
What are hte overall highest landing value species? In order please
Salmon, lobsters, crabs, Alaskan pollock, sea scallops
What are the main things caught by Alaskan fisheries?
Alaskan pollock, snow and king crab
What are the main landings of Mexico gulf fisheries?
Browns and white shrimp, menhaden (for fish oil)
Trawling
Towing a large net behind a vessels
- often cone shaped
- can be in different water zones (bottom trawls, midwater trawling)
Concerns with trawling
- can cause damage to seabed
- get a lot of bycatch
Some fixes for bycatch from trawling
- turtle exclusions devices
- bycatch reduction devices
- manual sorting
- trap doors
- mesh size
Trap fishing
Lowering a trap, leaving it, bringing it back up
Purse seining
Wall of netting deployed around an entire area or school of fish
Long lining
Really long line with row of hooks
USVI fisheries are considered to be __________
Artisanal
Fisheries dependent data
Data that are collected directly from a fishery
Fisheries independent data
Data that is collected from research collected outside a fishery
Overfishing
A stock has a harvest rate higher than the rate that is considered sustainable
Overfished
A stock has a population size tat is too low and jeopardized the stocks ability to produce a sustainable yield
