期刊
MARINE POLLUTION BULLETIN
卷 150, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2019.110723
关键词
Microplastic; Marine mammal; Beluga whale; Arctic; Beaufort Sea
资金
- Fisheries and Oceans Canada (Pacific Region and Central Arctic Region)
- Canada-Inuvialuit Fisheries Joint Management Committee
- Tuktoyaktuk Hunters and Trappers Committee
- Tuktoyaktuk Community Corporation
- Garfield Weston Foundation, Mitacs
- Northern Contaminants Program of Crown-Indigenous and Northern Affairs Canada
- Fisheries and Oceans Canada through its National Contaminants Advisory Group
- Fisheries and Oceans Canada through Fisheries Joint Management Committee Fish and Marine Mammal Community Monitoring Program core funds
- Tarium Niryutait Marine Protected Area funds
Microplastics (MPs, particles < 5 mm) represent an emerging global environmental concern, having been detected in multiple aquatic species. However, very little is known about the presence of MPs in higher trophic level species, including cetaceans. We worked with community based monitors and Inuvialuit hunters from Tuktoyaktuk (Northwest Territories, Canada) to sample seven beluga whales (Delphinapterus leucas) in 2017 and 2018. Microplastics were detected in the gastrointestinal tracts in every whale. We estimate that each whale contained 18 to 147 MPs in their GI tract (average of 97 +/- 42 per individual). FTIR-spectroscopy revealed over eight plastic polymer types, with nearly half being polyester. Fibres made up 49% of MPs. The diversity of MP shapes and polymeric identities in beluga points to a complex source scenario, and ultimately raises questions regarding the significance and long-term exposure of this pollutant in this ecologically and culturally valuable species.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据