Tuna, Bigeye

Informatie over vissoort

Lees meer

General

Mackerel-like fish

Mackerel-like (Scrombodei) from a subspecies of the Perciformes, the biggest order of fish. Mackerel (Atlantic-, horse mackerel etc), tuna, swordfish and barracudas all fall among the mackerel-like fish. Globally it is a very popular fish and forms an important source of food and income for many people. Mackerel are pelagic fish that live in large schools. While swimming in large schools, mackerel-like fish confuse their predators with the silver-like brilliance from their scales. Island mackerel is the smallest with 2o cm, the largest is the bluefin tuna that can reach a size of over 5 meters.

Tuna, Bigeye

Bigeye tuna can be found in the (sub)tropical regions of all major oceans. It is a large species of tuna which can reach a maximum length of 250 centimetres. There are 4 stocks of bigeye tuna that can be found in the Pacific Ocean, the Indian Ocean and the Atlantic Ocean. Young bigeye tuna often swim in large groups, sometimes with other species of tuna. This species can reach an age of 12 years.

Tuna, Bigeye

Thunnus obesus

Origin

FAO 61,71,77,81

Farming- / Catch method

Handlines and pole-lines

Minder tonen Toon beoordeling

Fish stocks and fishing pressure

Ecosystem effects

Fishery management

Final assessment

Explanation assessment

The stock is not in an overfished state and not experiencing overfishing.

Handline and pole-and-line fishery has very little bycatch and discards. Negative ecosystem changes caused by the fishery are unlikely.

The overall management is considered marginally effective.

Tuna, Bigeye

Thunnus obesus

Origin

FAO 61,71,77,81,87

Farming- / Catch method

Pelagic longlines

Minder tonen Toon beoordeling

Source usage

Impact on the environment

Management

Final assessment

Explanation assessment

Big eye tuna are very vulnerable to overfishing. Currently, the stock of bigeye tuna does not seem not to be overfished.

Longlines are an unselective fishing gear, consisting of a long horizontal line of 50-100 km length. About 40-60% of the catch consists of unwanted bycatch like sea turtles, sharks, rays and seabirds.

The management of Bigeye tuna falls under the jurisdiction of the Western Central Pacific Fisheries Commission. The overall management is considered marginally effective.

Tuna, Bigeye

Thunnus obesus

Origin

FAO 61,71,77,81,87

Farming- / Catch method

Purse seines

Minder tonen Toon beoordeling

Source usage

Impact on the environment

Management

Final assessment

Explanation assessment

The stock is not in an overfished state and not experiencing overfishing. However, Bigeye tuna is sensitive to overfishing.

Around 40-60% of the catch consists of bycatch like sea turtles, sharks, rays and seabirds. This method of fishing is not selective.

The management of Bigeye tuna falls under the jurisdiction of the Western Central Pacific Fisheries commission. The overall management is considered marginally effective.

Tuna, Bigeye

General

Mackerel-like fish

Tuna, Bigeye

Tuna, Bigeye

Tuna, Bigeye

Tuna, Bigeye

Manage your settings

What are cookies?

Manage your cookie settings

Cookie types: