Remember that mouthwatering meal you had 20 years ago at that unforgettable restaurant? Old cuttlefish can remember that sort of thing, too. ScienceMagArchives
Remember that mouthwatering meal you had 20 years ago at that unforgettable restaurant? Old cuttlefish can remember that sort of thing, too. In a new study, researchers found the squid relative can recall the entire experience of its favorite meal—and, unlike in people, that ability gets better with age.
To test their episodic memory, the researchers added another variable: the animals’ personal preference. They offered the cuttlefish two meals—some rather dull prawn meat and their favorite live grass shrimp—at the same time in two different places in their tanks. Then they offered another two meals at the designated tank locations, but at different times: One hour after the first meal, the cuttlefish got prawn, or, 3 hours later, they were given both prawn and shrimp .
“It’s a clever study,” says Daniel Osorio, a neuroscientist at the University of Sussex who wasn’t involved in the work. “It shows that these animals are really good at learning complicated things.” Many studies make big claims about cephalopod intelligence, he says, but few demonstrate it in such a sophisticated way.
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