Researchers from the University of Gothenburg have demonstrated for the first time that painful stimuli reach the brain of sea crabs, evidencing that crustaceans feel pain.
EEG (electroencephalogram) measurements show clear neuronal reactions in the crustaceans’ brains during mechanical or chemical stimulation, according to a study published in the Biology journal.
Towards Greater Animal Welfare
In the search for greater animal welfare of animals consumed by humans, researchers have focused on decapod crustaceans, such as shrimp, lobsters, crabs, and river crabs. Although they are currently not covered by animal welfare legislation in the EU, this could soon change due to these new findings.
Kasiouras, one of the researchers, explained that all animals need a pain system to avoid dangers. The nervous structure of crustaceans is similar, so it can be assumed that species like shrimp, river crabs, and lobsters also process painful stimuli in their brains.
The Need for More Humane Methods to Treat Crabs
Researchers point out the need to find more humane ways to handle and even kill crustaceans, as it is currently allowed to cut a live crustacean, unlike mammals.
“We need more research to find less painful ways to kill shellfish,” stated Sneddon.
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