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Pacific bluefin tuna stocks drop to record-low levels

NGOs sound the alarm, saying if population of Pacific bluefins drops much further, it 'would be considered commercially extinct.'

The latest scientific assessment paints a bleak future for the Pacific bluefin tuna, as stocks have dropped by more than 97 percent from its historic levels, reported ABC News.

A draft summary of a report by the International Scientific Committee for Tuna and Tuna-like Species in the North Pacific Ocean seen by The Associated Press showed the current population of bluefin tuna is estimated at 2.6 percent of its "unfished" size.

A previous assessment put the population at 4.2 percent. The new report is due to be reviewed by the committee in July.

The report estimated in 2014, the total recruitment level of the fish, or the percentage of new fish that survive each year, was below 3.7 million fish, the second lowest level ever.

Under current levels of reproduction and management of the fisheries in the Pacific, the likelihood of rebuilding stocks to healthy levels is only 0.1 percent, the report said.

Cutting catches by a fifth would improve those odds to only 3 percent.

Overfishing has continued despite calls to reduce catches to allow the species to recover. In some areas, bluefin tuna is harvested at triple the levels considered to be sustainable.

"The situation is really as bad as it appears," said Amanda Nickson, director for Global Tuna Conservation at The Pew Charitable Trusts.

Limits imposed after the previous estimates actually allowed some countries to up their catches, she said.

"If those managers again fail to act in a conservation-minded way this time, it may be time for other actions, such as an international trade ban or complete fishing moratorium," Nickson said.

Japanese eat about 80 percent of all bluefin tuna caught worldwide, and stocks of all three bluefin species — the Pacific, Southern and Atlantic — have fallen over the past 15 years as demand for the fish has soared globally.

Organizations charged with helping to manage bluefin fisheries have set a goal of rebuilding the species' population to 6.4 percent, or 42,592 metric tons, of unfished levels by 2024.

However, 6.4 percent levels for a species like the Pacific bluefin, which can live for up to 40 years, are no guarantee of a recovery. Many experts believe 20 percent of historic levels is the minimum size for a sustainable fishery.

The international body that monitors fisheries in most of the Pacific Ocean, the Western and Central Pacific Fisheries Commission, was unable to reach consensus last year on either short-term or long-term measures to help restore the bluefin population.

In Europe, officials have agreed last month on implementing a recovery plan for bluefin tuna in the eastern Atlantic and the Mediterranean.

A next step by conservationists could include efforts to get Pacific bluefin tuna banned from international trading.

An earlier estimate put the 2014 population of the bluefin at 26,000 metric tons. The most recent reduced that estimate by 9,000 metric tons, to 17,000 metric tons.

If the population of Pacific bluefin drops much further, it may no longer be economically feasible to fish for them.

At that point, "Pacific bluefin would be considered commercially extinct," Nickson said.

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