Some waterway may take care pristine , but there ’s more going on beneath the surface . In 2019 , a universe of freshwater shrimp in Englandtested positivefor cocaine . The year before , researchers found mussels near Seattle with tincture of opioids and other drugs in their system . And now , researchers in the Czech Republic intimate that fish can show signboard of dependance when scupper to methamphetamine in contaminated H2O .
In a lab - based experiment , the investigator mimicked the environment of browned trout swim in drug - contaminated rivers . AsCNETreports , the fish were separated into two radical . The first mathematical group was kept for eight weeks in a tank with clean water , while the second group inhabit in a tankful with a concentration of 1 microgram of meth per cubic decimetre of water . After the eight weeks , the researchers moved all the Pisces the Fishes into a cooler with two current of weewee : one clean and jerk , the other laced with shabu .
They found that the Pisces the Fishes from the glass - laced tank suffered withdrawal - similar symptom for about four day and were sluggishly moving around the tank . About one-half of the meth - exposed fish were attracted to the meth - tainted stream , while only 41 percent of the drug - free fish went to the corrupt current . The investigator also bring out that the trout from the meth - containing tank had traces of the drug in their brains 10 days after their last exposure to the polluted water . The determination come along in theJournal of Experimental Biology .
The study calculate to examine how prejudicious small - stage drug pollution is to aquatic wellness . As Pavel Horký , the paper ’s lead source , said in apress release , the team is “ concerned that drug dependance could drive fish to congregate near insalubrious water discussion discharges in search of a fix , as well as disturbing their rude pacing of life . ” But since this study was conduct under lab conditions , more research is take to know if brown trout in the natural state would have the same effects .
