Sharks in Brazil test positive for cocaine, say scientists
Jul 23, 2024 · Sharks living off the coast of Brazil have tested positive for cocaine, according to new research, the first time that the drug has been detected in free-ranging sharks.
First 'Cocaine Sharks' Discovered off Brazil | Scientific American
Jul 25, 2024 · Sharks swimming off the cost of Brazil have something a little startling coursing through their systems: cocaine. The drug had never previously been found in wild sharks .
‘Cocaine sharks’ found in waters off Brazil | Science - AAAS
Jul 19, 2024 · As apex predators that eat fish across a wide area, sharks could serve as sentinels for hot spots of illegal drug pollution. The team also notes that sharks are a common source of food in Brazil. If highly contaminated with cocaine, they might be a health risk.
Not Afraid of Sharks? Well, Now They’re on Cocaine.
Jul 24, 2024 · All 13 sharks examined were found to have unfiltered cocaine in much higher concentrations than in previous studies on other animals, indicating chronic exposure to the drug.
Thirteen Sharks Test Positive for Cocaine Off the Coast of Brazil
Jul 25, 2024 · Researchers note that the amount of cocaine found in the sharks was a fairly low concentration, though females had higher levels than males.
Sharks test positive for cocaine near Rio de Janeiro, Brazil - NPR
Jul 23, 2024 · “The key findings of the study are the presence of cocaine in sharks," Hauser Davis says. "The actual high levels of cocaine detected in muscle is indicative of chronic exposure.”
Why have Brazilian sharks tested positive for cocaine?
Jul 26, 2024 · High concentrations of cocaine were found in the sharks’ muscles and livers by researchers at the Rio de Janeiro-based Oswaldo Cruz Foundation. Benzoylecgonine was also detected in the same...
"Cocaine sharks": Predators off coast of Brazil test positive for …
Jul 23, 2024 · Sharks in the waters off Brazil have tested positive for cocaine, marine biologists said in a new study, marking the first time the drug has been found in the free-ranging predators.
Sharks off Brazil coast test positive for cocaine - BBC
Jul 23, 2024 · Marine biologists tested 13 Brazilian sharpnose sharks taken from the shores near Rio de Janeiro and found they tested for high levels of cocaine in their muscles and livers.
'Cocaine sharks' in Brazil expose ocean pollution - National …
Jul 23, 2024 · How does cocaine affect sharks? Sharks may take up cocaine directly through their gills or eat smaller prey that contain the substance.
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