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Strange but true: salmon on cocaine swim a lot more.
But they’re not doing lines in the bathroom—they’re part of a new study. This sounds like an odd thing to research, but cocaine and its metabolites—along with other , mainly from human wastewater. And scientists are working to understand how such substances might affect wildlife.
“Many aquatic organisms in human-impacted environments are living in a dilute cocktail of biologically active chemicals,” says Jack Brand, a researcher in aquatic ecology at the Swedish University of Agricultural Sciences. “We’re only really scratching the surface.”
In the new study, Brand and his colleagues focused on wild Atlantic salmon (Salmo salar). The team fitted 105 juvenile salmon reared in captivity with an acoustic tracking tag and an implant. In one group of 35, the implant slowly released cocaine, in another it released benzoylecgonine (cocaine’s main metabolite), and in a control group it released nothing. They then released the salmon into Lake Vättern in Sweden to see what happened .
But they’re not doing lines in the bathroom—they’re part of a new study. This sounds like an odd thing to research, but cocaine and its metabolites—along with other , mainly from human wastewater. And scientists are working to understand how such substances might affect wildlife.
“Many aquatic organisms in human-impacted environments are living in a dilute cocktail of biologically active chemicals,” says Jack Brand, a researcher in aquatic ecology at the Swedish University of Agricultural Sciences. “We’re only really scratching the surface.”
In the new study, Brand and his colleagues focused on wild Atlantic salmon (Salmo salar). The team fitted 105 juvenile salmon reared in captivity with an acoustic tracking tag and an implant. In one group of 35, the implant slowly released cocaine, in another it released benzoylecgonine (cocaine’s main metabolite), and in a control group it released nothing. They then released the salmon into Lake Vättern in Sweden to see what happened .
