Fishery Gear Types Flashcards
What are the categories of gear types?
- Technology
- Passive gear - target species move to the gear
- Active gear - gear that is moved to the target species (propelling or towing)
What are the technology gear types?
Sonar
Drones
What are the passive gear types?
- Gill nets
- Longlines
- Fyke and pound nets
- traps
- pots
What are the active gear types?
- Trawls
- Dredges
- Harpoons
Gill Nets
- Have been in use for thousands of years
- Improvements have happened over the years (hydraulic net reels)
What are the primary gill net types?
Fixed gill net, which can be set (anchored), staked, or drift
How can gear be targeted to catch a specific age or size fish?
- Mesh size of the net
- Hook size
- Types of bait
What was a type away from the VIMS Alosine Monitoring Program?
The ratio does not represent the sex ratio in the natural environment. The ratio is a product of the net mesh size.
Pelagic Longline
Longlines are just baited hooks
Held to the surface by buoys
Bottom Longline
Baited hooks held to the bottom with anchors
What are the various types of Trawls?
- Midwater trawl
-Demersal (Bottom) trawl
-Otter Trawls (Shrimp trawlers use paired otter trawls)
-Prawn Trawl (double rig) - Beam Trawl
-Dredge
What types of species do dredge nets target?
Primary grab shellfish on the bottom
Potential impacts
Damage to the seafloor and any habitat living there
What are some suggested best practices?
Gear design/operations
Prohibitions by gear type
Freeze trawling footprint
Nearshore restrictions and zoning
Prohibitions by habitat type
Multipurpose habitat management
Invertebrate bycatch quota
Habitat-impact quota
Removal of effort