Small-scale octopus fishery operations enable environmentally and socioeconomically sustainable sourcing of nutrients under climate change

Tropical blue food supply can be enhanced by small-scale octopus fisheries. Their catch methods and management approaches contribute to sustainable production and livelihoods. Small-scale octopus fisheries represent an underexplored source of nutrients and socioeconomic benefits for populations in the tropics. Here we analyse data from global seafood databases and published literature, finding that tropical small-scale octopus fisheries produced 88,000 t of catch and processed octopus in 2017, with a landed value of US$ 2.3 billion, contributing towards copper, iron and selenium intakes, with over twice the vitamin B12 content of finfish. Catch methods, primarily consisting of small-scale lines and small-scale pots and traps, produced minimal bycatch, and the fast growth and adaptability of octopus may facilitate environmentally sustainable production under climatic change. Management approaches including periodic fishery closures, size restrictions, licences and knowledge transfer of fishing gears can enable greater blue food supply and economic value to be generated while improving environmental sustainability.

Automated summary

Small-scale octopus fisheries contribute to the enhancement of tropical blue food supply and livelihoods through their catch methods and management approaches. These fisheries produced a significant amount of catch and processed octopus in 2017 with a high landed value, providing important nutrients and socioeconomic benefits for tropical populations.