UK: Tuna species popular in sashimi and poke bowls in sharp decline in the Indian Ocean

The yellowfin tuna commonly enjoyed in sashimi, poke bowls and salad sandwiches may soon disappear from these dishes if current over-exploitation rates remain unchanged, especially in the Indian Ocean.A paper, titled "Multiple lines of evidence highlight the dire straits of yellowfin tuna in the Indian Ocean," and published in Ocean and Coastal Management shows that since industrial exploitation started in 1950, the global biomass—the weight of a given population in the water—of yellowfin tuna has decreased, on average, by 54% across the four populations managed by tuna Regional Fisheries Management Organizations (RFMO). In the Indian Ocean, yellowfin tuna biomass has experienced a 70% decline in the past 70 years."If we look at more recent years, we can see that global yellowfin tuna populations continue to struggle. Biomass continues to decline everywhere except for stabilizing trends in the Western Pacific Ocean, prompted by management interventions," said Kristina Heidrich, ...