Feeding type affects microplastic ingestion in a coastal invertebrate community.

Marine litter is one of the problems marine ecosystems face at present, coastal habitats and food webs being the most vulnerable as they are closest to the sources of litter. A range of animals (bivalves, free swimming crustaceans and benthic, deposit-feeding animals), of a coastal community of the northern Baltic Sea were exposed to relatively low concentrations of 10 μm microbeads. The experiment was carried out as a small scale mesocosm study to mimic natural habitat. The beads were ingested by all animals in all experimental concentrations (5, 50 and 250 beads mL(-1)). Bivalves (Mytilus trossulus, Macoma balthica) contained significantly higher amounts of beads compared with the other groups. Free-swimming crustaceans ingested more beads compared with the benthic animals that were feeding only on the sediment surface. Ingestion of the beads was concluded to be the result of particle concentration, feeding mode and the encounter rate in a patchy environment.

[1]  Richard C. Thompson,et al.  Microplastic Moves Pollutants and Additives to Worms, Reducing Functions Linked to Health and Biodiversity , 2013, Current Biology.

[2]  Colin R. Janssen,et al.  Occurrence and distribution of microplastics in marine sediments along the Belgian coast. , 2011, Marine pollution bulletin.

[3]  M. Heinonen,et al.  Do wastewater treatment plants act as a potential point source of microplastics? Preliminary study in the coastal Gulf of Finland, Baltic Sea. , 2015, Water science and technology : a journal of the International Association on Water Pollution Research.

[4]  H. Burton,et al.  Origins and Biological Accumulation of Small Plastic Particles in Fur Seals from Macquarie Island , 2003, Ambio.

[5]  Large-scale species invasion into a low-diversity system: spatial and temporal distribution of the invasive polychaetes Marenzelleria spp. in the Baltic Sea , 2015, Biological Invasions.

[6]  Richard C. Thompson,et al.  Lost at Sea: Where Is All the Plastic? , 2004, Science.

[7]  S. B. Sheavly,et al.  Plastic particles in coastal pelagic ecosystems of the Northeast Pacific ocean. , 2011, Marine environmental research.

[8]  Douglas C. Miller,et al.  Particle selectivity, gut volume, and the response to a step change in diet for depositfeeding polychaetes , 1999 .

[9]  Rei Yamashita,et al.  Concentration of polychlorinated biphenyls (PCBs) in beached resin pellets: variability among individual particles and regional differences. , 2005, Marine pollution bulletin.

[10]  Richard C. Thompson,et al.  Transport and release of chemicals from plastics to the environment and to wildlife , 2009, Philosophical Transactions of the Royal Society B: Biological Sciences.

[11]  K. Herkül,et al.  Seasonal variability in the grazing potential of the invasive amphipod Gammarus tigrinus and the native amphipod Gammarus salinus (Amphipoda: Crustacea) in the northern Baltic Sea , 2009, Biological Invasions.

[12]  M. Kilpi,et al.  Blue mussels, Mytilusedulis, at the edge of the range: population structure, growth and biomass along a salinity gradient in the north-eastern Baltic Sea , 2002 .

[13]  Yngvar Olsen,et al.  A comparative study of responses in plankton food web structure and function in contrasting European coastal waters exposed to experimental nutrient addition , 2006 .

[14]  Richard C. Thompson,et al.  Ingested microscopic plastic translocates to the circulatory system of the mussel, Mytilus edulis (L). , 2008, Environmental science & technology.

[15]  G. Liebezeit,et al.  Microplastics in Beaches of the East Frisian Islands Spiekeroog and Kachelotplate , 2012, Bulletin of Environmental Contamination and Toxicology.

[16]  E. Bonsdorff,et al.  Predation by juvenile flounder (Platichthys flesus L.) : a test of prey vulnerability, predator preference, switching behaviour and functional response , 1998 .

[17]  H. U. Riisgård,et al.  Feeding Behaviour of the Mussel, Mytilus edulis: New Observations, with a Minireview of Current Knowledge , 2011 .

[18]  A. Norkko,et al.  Burial and decomposition of plant pigments in surface sediments of the Baltic Sea: role of oxygen and benthic fauna , 2012 .

[19]  C. Tyler,et al.  Uptake and retention of microplastics by the shore crab Carcinus maenas. , 2014, Environmental science & technology.

[20]  M. Lehtiniemi,et al.  Habitat modification mediated by motile surface stirrers versus semi-motile burrowers: potential for a positive feedback mechanism in a eutrophied ecosystem , 2009 .

[21]  C. Moore,et al.  Persistent organic pollutants carried by synthetic polymers in the ocean environment. , 2007, Marine pollution bulletin.

[22]  Fiona Murray,et al.  Plastic contamination in the decapod crustacean Nephrops norvegicus (Linnaeus, 1758). , 2011, Marine pollution bulletin.

[23]  Ellen Besseling,et al.  Effects of microplastic on fitness and PCB bioaccumulation by the lugworm Arenicola marina (L.). , 2013, Environmental science & technology.

[24]  R. Elmgren,et al.  Feeding depths and organic absorption for the deposit feeding benthic amphipods Pontoporera affinis and Pontoporeia femorata , 1989 .

[25]  Alysse Mathalon,et al.  Microplastic fibers in the intertidal ecosystem surrounding Halifax Harbor, Nova Scotia. , 2014, Marine pollution bulletin.

[26]  Courtney Arthur,et al.  Proceedings of the International Research Workshop on the Occurrence, Effects, and Fate of Microplastic Marine Debris, September 9-11, 2008, University of Washington Tacoma, Tacoma, WA, USA , 2009 .

[27]  Colin R. Janssen,et al.  Microplastic pollution in deep-sea sediments. , 2013, Environmental pollution.

[28]  Colin R. Janssen,et al.  Microplastics are taken up by mussels (Mytilus edulis) and lugworms (Arenicola marina) living in natural habitats. , 2015, Environmental pollution.

[29]  Sangjin Lee,et al.  Plastic debris in the ocean , 2011 .

[30]  H. U. Riisgård,et al.  Growth, filtration and respiration in the mussel Mytilus edulis:no evidence for physiological regulation of the filter-pump to nutritional needs , 1996 .

[31]  C. Peterson,et al.  Control of foraging behavior of individuals within an ecosystem context: the clam Macoma balthica, flow environment, and siphon-cropping fishes , 1994, Oecologia.

[32]  Erin R. Graham,et al.  Deposit- and suspension-feeding sea cucumbers (Echinodermata) ingest plastic fragments , 2009 .

[33]  N. V. von Moos,et al.  Uptake and effects of microplastics on cells and tissue of the blue mussel Mytilus edulis L. after an experimental exposure. , 2012, Environmental science & technology.

[34]  Julian Moger,et al.  Microplastic ingestion by zooplankton. , 2013, Environmental science & technology.

[35]  S. Forster,et al.  Are similar worms different? A comparative tracer study on bioturbation in the three sibling species Marenzelleria arctia, M. viridis, and M. neglecta from the Baltic Sea , 2013 .

[36]  M. McHugh,et al.  Occurrence of microplastics in the gastrointestinal tract of pelagic and demersal fish from the English Channel. , 2013, Marine pollution bulletin.

[37]  Richard C. Thompson,et al.  Accumulation and fragmentation of plastic debris in global environments , 2009, Philosophical Transactions of the Royal Society B: Biological Sciences.

[38]  Elmgren,et al.  Benthic predator-prey interactions: evidence that adult Monoporeia affinis (Amphipoda) eat postlarval Macoma balthica (Bivalvia). , 2000, Journal of experimental marine biology and ecology.

[39]  A Cesar,et al.  Assessment of microplastic toxicity to embryonic development of the sea urchin Lytechinus variegatus (Echinodermata: Echinoidea). , 2015, Marine pollution bulletin.

[40]  E. Bonsdorff.  Zoobenthic diversity-gradients in the Baltic Sea: Continuous post-glacial succession in a stressed ecosystem , 2006 .

[41]  M. Lehtiniemi,et al.  Feeding differences among common littoral mysids, Neomysis integer, Praunus flexuosus and P. inermis , 2008, Hydrobiologia.

[42]  Vivi Fleming-Lehtinen,et al.  Ingestion and transfer of microplastics in the planktonic food web. , 2014, Environmental pollution.