PRIMARY SECTOR FISHING FISHING Definition Types of fishing: - - PowerPoint PPT Presentation

PRIMARY SECTOR

FISHING

FISHING

• Definition
• Types of fishing: deep-sea and shallow-see fishing.
• Fishing techniques
• Trawling
• Seining
• Driftnetting
• Handlining
• Fishtraps
• Commercial fishing
• Problems on fishing
• Main solutions for overfishing: EEZ, quotas, aquaculture
• Raft culture
• Shellfish fishing in Galicia

Definition

• Fishing is the activity of hunting for
• fish. By extension, the term fishing is

also aplied to hunting for other aquatic animals such as various types of shellfish.

Types of fishing

• Deep sea fishing
• Shallow water fishing

Fishing techniques

• Trawling: is a method
• f fishing that

involves actively pulling a fishing net through the water behind one or more boats.

Fishing techniques

• Seining: a seine is a

large fishing net that hangs vertically in the water by attaching weights along the botton edge and floats along the top.

Fishing techniques:gillnetting

• A gillnet is a wall of

netting set in a straight line, equipped with weights at the bottom and floats at the top, and is usually anchored at each end.

Fishing techniques:gillnetting

• Fish swim through the

virtually invisible netting, and are entangled when their gills are caught in the webbing, hence the name gillnetting.

Fishing techniques

• Fishing lines: fish are

caught with a fishing line by encouraging a fish to bit upon a fish hook or a gorge that is buried in the

• bait. Long line fishing is a

commercial fishing technique that uses hundreds or even thousands of baited hooks hanging from a single line.

Fishing techniques

• Fishtraps: pot-traps

are baited to atract fishes and periodically

• lifted. Pots are

weighted to rest on the bottom, with marked buoys at the surface. They are typically used to catch crustaceans.

Commercial fishing

• Commercial fishing methods have become very

efficient using large nets and sea-going processing factories.

Commercial fishing

• The development of

refrigeration and freezing technologies transformed the commercial fishing industry: fishing vessels could be larger, spending more time away from port and therefore accessing fish stocks at a much greater distance..

Problems on fishing

Pollution Overfishing

Main solutions for overfishing

• Creating exclusive economic zones (EEZ),

an area extending 200 nautical miles seaward from the coast in which a country has sovereign rights to explore and explote marine resources.

• Restrictions or quotas. International treaties

limit the fishing effort.

• Aquaculture

Aquaculture

• Aquaculture is the

cultivation of the natural produce of water (such us fish or shellfish). Fish farming is a common kind of aquaculture.

Raft culture: mussel aquaculture

• The traditional raft

system consist in a wooden structure with rectangular shape, and with 4 or 5 floaters, made witn still and covered with glass

• fiber. There are new

designs made of polyethilene.

Mussel aquaculture in Galicia

• The EU produces

about 660.000 mt of mussels every year, of those about 300.000 mt are produced in Spain, with a 96% in Galicia.

Shellfish fishing

• A very important activity in Galicia is also

shellfish fishing. It can be on-boat or on-foot.

Semi-farming on-foot shellfish fishing

• On-foot

shellfing fishing is made above all by

• women. A way

to improve production is semi-farming.