Navigation Links
Microplastics make marine worms sick
Date:12/2/2013

Tiny bits of plastic trash could spell big trouble for marine life, starting with the worms, say a team of researchers from Plymouth University and the University of Exeter who report their evidence in a pair of studies in the Cell Press journal Current Biology on December 2. Those marine worms play a key ecological role as an important source of food for other animals.

Work by Stephanie Wright from the University of Exeter found that if ocean sediments are heavily contaminated with microplastics, marine lugworms eat less and their energy levels suffer. A separate report, from Mark Anthony Browne on work performed at Plymouth University, shows that ingesting microplastic can also reduce the health of lugworms by delivering harmful chemicals, including hydrocarbons, antimicrobials, and flame retardants, to them.

"These chemicals are persistent, meaning they could accumulate in the tissue of organisms and take a long time to break down," says Richard Thompson of Plymouth University. "Our laboratory studies provide the first clear evidence that microplastics could cause harm and show that this could result from both the physical presence of ingested plastic and chemical transfer. Our next steps will be to establish the full implications of these findings for organisms in natural habitats."

In addition to their role in the food chain, "lugworms also feed on and churn the organic content in sediments, much as earthworms in the soil do," Wright explains. "If worms in contaminated environments were to reduce feeding levels by an amount comparable to that seen in that lab, it would mean significantly less turnover of sediment. In an area the size of the Wadden Sea, for instance, sediment turnover could drop by more than 130,000 liters each year."

The microplastic levels used in the two papers approximate those found at highly contaminated sites. There are many other organismsincluding starfish, sea cucumbers, and fiddler crabsthat may be similarly affected by the tiny bits of plastic.

Many plastics contain chemical additives, such as plasticizers, dyes, and antimicrobials, which can leach out into sediments and seawater. Microplastics also concentrate water-borne chemicals on their surfaces, such as pesticides and detergents. In other words, the problem with microplastics isn't just the plastic itself, but the complex mix of chemicals the plastics carry with them.

Plastic debris degrades into ever-smaller pieces, which means that a wider range of organisms can ingest this material, and particles of microplastic are now the most abundant form of solid-waste pollution on our planet. Although plastic debris is associated with some of the most persistent, bioaccumulative, and toxic chemicals regulated by the U.S. Environmental Protection Agency and the European Union, the debris is considered non-hazardous by policy makers.

"The hazard ranking of plastic within policy about debris needs to be reassessed, and funding from industry, not just government, [needs to be] directed towards research that adequately tests the safety of plastics in relation to humans and wildlife," Browne says.

"We believe our study has highlighted the need to reduce the amount of plastic waste and therefore microplastics which enter our seas," says Tamara Galloway of the University of Exeter. "Plastics are enormously beneficial materials. However, if marine plastic pollution continues to increase, impacts such as those demonstrated in our laboratory studies could occur in the natural environment. It is therefore important that we prevent the accumulation of plastic and microplastic debris in marine habitats through better waste-handling practices and smarter choices in the materials we use."


'/>"/>

Contact: Mary Beth O'Leary
moleary@cell.com
617-397-2802
Cell Press
Source:Eurekalert  

Related biology news :

1. Marine reserves enhance resilience to climate change
2. Stingray movement could inspire the next generation of submarines
3. Assessing noise impact of offshore wind farm construction may help protect marine mammals
4. NOAA awards $967,000 to 11 marine debris removal projects
5. NOAA announces additions to National System of Marine Protected Areas
6. UCSB study finds climate change is causing modifications to marine life behavior
7. First global atlas of marine plankton reveals remarkable underwater world
8. Stop marine pollution to protect kelp forests
9. Discovery of the Plastisphere -- a new marine ecological community
10. Submarine springs reveal how coral reefs respond to ocean acidification
11. Chalking up a marine blooming alga: Genome fills a gap in the tree of life
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Microplastics make marine worms sick
(Date:1/22/2016)... DUBLIN , January 22, 2016 ... has announced the addition of the  ... to their offering. --> ... of the  "Global Behavioral Biometric Market ... --> Research and Markets ( http://www.researchandmarkets.com/research/4lmf2s/global_behavioral ...
(Date:1/20/2016)... Jan. 20, 2016 A market that just ... benefit from the explosion in genomics knowledge. Learn all ... Research. A range of dynamic trends are pushing market ... personalized medicine - pharmacogenomics - pathogen evolution - next ... markets - greater understanding of the role of genetic ...
(Date:1/18/2016)... , Jan. 18, 2016  Extenua Inc., ... that simplifies the use and access of ubiquitous ... go-to-market partnership with American Cyber.  ... extensive experience leading transformational C4ISR and Cyber initiatives ... integrating the latest proven technology solutions," said ...
Breaking Biology News(10 mins):
(Date:2/12/2016)... ... February 12, 2016 , ... The Pittcon 2016 Exposition, which ... will include 848 exhibitors (count as of February 9) of which 119 are ... used by the scientific community in industrial, academic, and government labs. The Exposition ...
(Date:2/12/2016)... FRANCISCO , February 12, 2016 ... Medicine Efforts by Enabling Scientific Understanding of Complex ... and Rare Diseases --> ... genomic diagnostics in South Asia and a leading provider ... would contribute $10 million to the GenomeAsia 100K ...
(Date:2/11/2016)... 2016  Vermillion, Inc. (NASDAQ: VRML ), a ... the formation of the Steering Committee for its Pelvic ... --> Pelvic masses can present physicians and healthcare ... pregnancy is ruled out, pelvic masses may include cancers ... benign ovarian tumors and gastrointestinal and urinary tract masses. ...
(Date:2/11/2016)... Feb. 11, 2016  Spectra BioPharma Selling Solutions (Spectra) ... provides biopharma companies the experience, expertise, operational delivery ... outsourced sales teams. Created in concert with industry ... the strategic and tactical needs of its clients ... through both personal and non-personal promotion. ...
Breaking Biology Technology: