The State Of Your Tuna Fishery

The International Sustainable Seafood Foundation (ISSF) recently published online a downloadable technical report outlining the current health of our 23 commercial global tuna stocks titled: The Status of the Stocks. The report provides a comprehensive summary of the recent scientific stock assessments as well as the current management measures implemented by the respective Regional Fisheries Management Organisations (RFMO's). The methodology behind the rationale of this report revolves around these three key main factors: Abundance, Exploitation/Management (fishing mortality) and Environmental Impact (bycatch).  

In 2012 the global total catch of the 23 commercial tuna stocks was 4.6 million tons with skipjack tuna accounting for a total catch of 56% of this volume. Whilst the total yellow fin and albacore are 28% and 6% only. Whilst these are large volumes, it is proposed that globally 52% of the tuna stocks are in a healthy level of abundance, 39% are overfished and 9% are at an intermediate level. In terms of exploitation, 43.5% of the stocks are experiencing a low fishing mortality rate, 17.4% are experiencing overfishing, and 39.1% have a high fishing mortality that is being managed adequately.

When viewed from the point of view of total catch, 86% of the catch comes from healthy stocks. This is due to the fact that skipjack stocks contribute more than one half of the global catch of tunas, and they are all in a healthy situation due to their high fecundity rate. In contrast, most bluefin stocks and 2 out of 6 albacore stocks are overfished, but combined they make a relatively small fraction of the total catch.

A foreign vessel offloads its catch of tuna:

There are three main albacore tuna stocks in the Atlantic Ocean ICCAT area namely: North Atlantic, South Atlantic and the Mediterranean. Albacore catches in the South Atlantic increased 2% in 2012 (24,600 tons) from the previous year. Long linging accounts for 67% of this and 26% for Pole and Line. In 2012, the Total Allowable Catch (TAC) was set to 24 600 tons with a Maximum Sustainable Yield (MSY) at 25 200 tons. Due to the respective scientific advice and recommendations, the TAC for 2013 was reduced to 24 000 tons by the RFMO ICCAT. The Pole & Line review notes the lack of information regarding the impact the live bait vessels inflict upon the small pelagics and therefore could possibly be upgraded in the future with adequate data collection.

Currently South Africa has a quota allocation of 4 400 tons only. Previously South Africa and Namibia had a sharing scheme but last year's ICCAT meeting it was generally voted to be split thereby Namibia's quota will be set at 3 600 tons. With the recent figures circulating around the Department of Agriculture, Forestry & Fisheries (DAFF), South Africa should reach and succeed our quota before the end of this year. This has major implications and repercussions with the most noticeable being a reduction in our quota by the volume of what was over caught for the 2016 season. (the quota will remain 4 400 tons for the 2015 season)

South Africa who has the second largest albacore quota (Chinese Taipei has been allocated 9 400 tons) will have to approach the other South Atlantic fishing nations and request additional quota from them should we exceed our limit.