We quantified the fuel inputs and related GHG emissions associated

We quantified the fuel inputs and related GHG emissions associated with global purse seine fisheries targeting major tuna species in 2009. With a FUI across all tuna purse seiners of 368 L/t, this fishery appears to perform relatively well, in terms of fuel consumption, when compared to tuna fisheries employing different gears, fisheries targeting other species, and edible protein derived from agricultural and aquaculture sources. While this finding does not speak to broader environmental concerns of PP 2 status, bycatch, and habitat alteration, it does provide insight into the increasingly important role of energy performance in the sector, and adds to our understanding of the environmental and economic sustainability of one of the largest and most valuable fisheries in the world. To meet the demands of an energy-constrained and carbon-sensitive world, the continued measurement and improvement of energy performance must form an integral part of the environmental and economic strategies of the tuna industry and other fisheries moving forward.