Scientists have found DDT in zooplankton and deep-sea fish off the coast of L.A., indicating the toxic chemical might be infiltrating the base of the food web.
For several years now, one question has held the key to understanding just how much we should worry about the hundreds of tons of DDT that had been dumped off the coast of Los Angeles: How, exactly, has this decades-old pesticide — a toxic chemical spread across the seafloor 3,000 feet underwater — continued to reenter the food web? Now, in a highly anticipated study, researchers have identified tiny zooplankton and mid-to-deep-water fish as potential links between the contaminated sediment and...
In addition to zooplankton, which are a window into the base of the food chain, one particular type of fish, myctophids, proved to be key. Also known as lanternfish, myctophids are tiny, unassuming fish that travel remarkable distances from the deep ocean all the way to the surface. The researchers methodically ground up each fish sample, extracted the lipid , and assessed the contamination with an unprecedented level of scrutiny.
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