Gooseneck barnacles (Lepasspp.) ingest microplastic debris in the North Pacific Subtropical Gyre
Open Access
- 22 October 2013
- Vol. 1, e184
- https://doi.org/10.7717/peerj.184
Abstract
Substantial quantities of small plastic particles, termed “microplastic,” have been found in many areas of the world ocean, and have accumulated in particularly high densities on the surface of the subtropical gyres. While plastic debris has been documented on the surface of the North Pacific Subtropical Gyre (NPSG) since the early 1970s, the ecological implications remain poorly understood. Organisms associated with floating objects, termed the “rafting assemblage,” are an important component of the NPSG ecosystem. These objects are often dominated by abundant and fast-growing gooseneck barnacles (Lepas spp.), which predate on plankton and larval fishes at the sea surface. To assess the potential effects of microplastic on the rafting community, we examined the gastrointestinal tracts of 385 barnacles collected from the NPSG for evidence of plastic ingestion. We found that 33.5% of the barnacles had plastic particles present in their gastrointestinal tract, ranging from one plastic particle to a maximum of 30 particles. Particle ingestion was positively correlated to capitulum length, and no blockage of the stomach or intestines was observed. The majority of ingested plastic was polyethylene, with polypropylene and polystyrene also present. Our results suggest that barnacle ingestion of microplastic is relatively common, with unknown trophic impacts on the rafting community and the NPSG ecosystem.This publication has 73 references indexed in Scilit:
- Microplastic Ingestion by ZooplanktonEnvironmental Science & Technology, 2013
- Organic pollutants in microplastics from two beaches of the Portuguese coastMarine Pollution Bulletin, 2010
- Quantitation of persistent organic pollutants adsorbed on plastic debris from the Northern Pacific Gyre's “eastern garbage patch”Journal of Environmental Monitoring, 2010
- The size, mass, and composition of plastic debris in the western North Atlantic OceanMarine Pollution Bulletin, 2010
- Fatal ingestion of floating net debris by two sperm whales (Physeter macrocephalus)Marine Pollution Bulletin, 2010
- Transport and release of chemicals from plastics to the environment and to wildlifePhilosophical Transactions B, 2009
- Monitoring the abundance of plastic debris in the marine environmentPhilosophical Transactions B, 2009
- Observations on the ecology, behaviour, swimming mechanism and energetics of the neustonic grapsid crab,Planes minutusJournal of the Marine Biological Association of the United Kingdom, 1992
- Particle retention efficiency of salpsJournal of Plankton Research, 1992
- Predaceous Feeding in Two Common Gooseneck BarnaclesScience, 1959