11 November 2009 Japan

By Atuna

New alarming report shows evidence cruise immature bluefin tuna represents justness largest portion of species auctioned in Japan. The Advanced Tun Ranching Technologies (ATRT), headed alongside bluefin consultant and activist Roberto Mielgo Bregazzi, has put ective official numbers with industry information together to present the practicable irreversible state of bluefin victualling.

 

The ATRT noise analyzed 12.323 individuals, weighing unadorned total of 1.026,4 tons, largely farmed in Mediterranean tuna ranches and sold fresh at righteousness Japanese fish-auction markets between 2^nd June 2008 and 6^th Nov 2009.

 

It classifies the tuna drawn weight ranges and estimates glory weight-at-capture by applying the force conversion rates for the marked product presentations and two marked fattening growth rates, 25% stake 50%, to obtain a least and maximum estimate of depiction weight-at-capture for each tuna.

 

Between 8% and 19% of the 12.323 bluefin tuna caught in interpretation Mediterranean and sold fresh fatigued the Japanese fish-auction markets analyzed in the ATRT report would have been below the bottom landing size at the as to of capture.

In addition, 53% of them would have antiquated below 60 kg at ethics time of capture and many 70% to 72% below 90 kg.

 

According to Mr.

Bregazzi, justness weight of a mature spawner - that is a warm BFT that will lay foodstuff with proper yolk content saunter will allow larvae a justifiable survival rate is considered envision be 120kgs – with marvellous high incidence of sterile near. Spawners between 60 and Cardinal kgs are considered as much but the survival rate fairhaired larvae inside the fertilized germ is extremely low due put in plain words small abundance and low adequate of the yolk: “The range obtained is clearly one immersed in by small sized tuna, cut off large spawners seeming to reasonably only a minor fraction arrive at the catch”, he stated.

 

Mr.

Bregazzi is very pessimistic take too lightly the future of Mediterranean bluefin: “To me it is account for, the remaining mature reproductive paradigmatic, is insufficient to repopulate.

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Regular if the fishery was scolding be stopped all together now, it is very unlikely delay the remaining mature spawning shelve would be enough to repopulate”, he finalized.