25% of Fish Sold at Markets Contain Plastic or Man-Made Debris
Roughly a quarter of the fish sampled from fish markets in California and Indonesia contained man-made debris—plastic or fibrous material—in their guts, according to a study from the University of California, Davis and Hasanuddin University in Indonesia.
UC Davis researchers found plastic and fibrous debris in 25 percent of the fish sold in Indonesian and California markets. Photo credit: Dale Trockel
The study, published last week in the journal Scientific Reports, is one of the first to directly link plastic and man-made debris to the fish on consumers’ dinner plates.
“It’s interesting that there isn’t a big difference in the amount of debris in the fish from each location, but in the type—plastic or fiber,” said lead author Chelsea Rochman, a David H. Smith postdoctoral fellow in the Aquatic Health Program at the UC Davis School of Veterinary Medicine. “We think the type of debris in the fish is driven by differences in local waste management.”
"Waiter, There’s Some Plastic in My Fish"
The researchers sampled 76 fish from markets in Makassar, Indonesia and 64 from Half Moon Bay and Princeton in California. All of the fragments recovered from fish in Indonesia were plastic. In contrast, 80 percent of the debris found in California fish was fibers, whereas not a single strand of fiber was found in Indonesian fish.
Indonesia has little in the way of landfills, waste collection or recycling and large amounts of plastic are tossed onto the beaches and into the ocean. The problem is made worse by a lack of purified drinking water that forces its residents to drink bottled water.
“Indonesia has some of the highest marine life richness and biodiversity on Earth and its coastal regions—mangroves, coral reefs and their beaches—are just awash in debris,” said co-author Susan Williams, a professor with the UC Davis Bodega Marine Laboratory who has worked on projects in Indonesia for the past several years. “You have the best and the worst situation right in front of you in Indonesia.”
Meanwhile, the U.S. has highly advanced systems for collecting and recycling plastics. However, most Californians wash their clothing in washing machines, the water from which empties into more than 200 wastewater treatment plants offshore California. The authors theorize that fibers remaining in sewage effluent from washing machines were ingested by fish sampled in the state.
“To mitigate the issue in each location, it helps to think about local sources and differences in waste management strategies,” Rochman said.
It Takes Guts
The scientists emphasize that the plastic and fibers are found in the fishes’ guts. That means humans are likely to ingest the debris only if the fish is eaten whole, as it is in Indonesia or such as with sardines and anchovies, rather than filleted. However, researchers are still studying whether chemicals in plastic can transfer into the meat.
The study was funded by a UC Davis Outreach and International Program SEED Grant, the National Science Foundation’s Graduate K-12 and IGERT programs and the National Institute of Environmental Health Sciences’ Superfund Research Program.
YOU MIGHT ALSO LIKE
Listen:<iframe style="border: none" src="//html5-player.libsyn.com/embed/episode/id/17278520/height/45/theme/standard/thumbnail/yes/direction/backward/" height="45" width="100%" scrolling="no" allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen></iframe><p><em>Reposted with permission from </em><em><a href="https://yaleclimateconnections.org/2021/01/college-course-teaches-students-how-to-be-climate-leaders/" target="_blank" rel="noopener noreferrer">Yale Climate Connections</a>.</em></p>
EcoWatch Daily Newsletter
By Daniel Raichel
Industry would have us believe that pesticides help sustain food production — a necessary chemical trade-off for keeping harmful bugs at bay and ensuring we have enough to eat. But the data often tell a different story—particularly in the case of neonicotinoid pesticides, also known as neonics.
- Bees Face 'a Perfect Storm' — Parasites, Air Pollution and Other ... ›
- European Top Court Upholds French Ban on Bee-Harming Pesticides ›
- UK Allows Emergency Use of Bee-Killing Pesticide - EcoWatch ›
By Andrea Germanos
Fed up with "empty promises" from world leaders, a dozen youth activists on Wednesday demanded newly sworn-in President Joe Biden and Vice President Kamala Harris take swift and bold climate action — even more far-reaching than promised on the campaign trail — stating that their "present and future depend on the actions your government takes within the next four years."
- Stories From the Youth Climate Movement in the Global South ... ›
- Young Climate Leaders Conclude Mock COP26 With Calls for ... ›
- Climate Activist Greta Thunberg Endorses Biden in Tweet - EcoWatch ›
When wind turbine blades reach the end of their usefulness, most are sawed into transportable pieces and hauled to landfills, where they never break down. Because of the resources and energy that go into producing these blades, this type of disposal is inefficient and wasteful. Recently, several innovative companies have begun brainstorming better ways to repurpose this green technology after it goes offline.
- World's Largest Solar Project and Floating Wind Turbine Signal ... ›
- Wind Power Costs Could See Another 50% Reduction by 2030 ... ›
New fossils uncovered in Argentina may belong to one of the largest animals to have walked on Earth.
- Groundbreaking Fossil Shows Prehistoric 15-Foot Reptile Tried to ... ›
- Skull of Smallest Known Dinosaur Found in 99-Million-Year Old Amber ›
- Giant 'Toothed' Birds Flew Over Antarctica 40 Million Years Ago ... ›
- World's Second-Largest Egg Found in Antarctica Probably Hatched ... ›