期刊
MARINE POLLUTION BULLETIN
卷 173, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2021.113084
关键词
Marine debris; Litter; Microplastics; Fragments; Marine mammals
资金
- Royal Society Te Aparangi Royal Society Fellowship
- Kate Edger Educational Charitable Trust Postdoctoral Award
- Massey University Research Fund (MURF) grant [RM22283]
- New Zealand Ministry of Business, Innovation and Employment (MBIE) Endeavour Fund Grant [C03X1802]
- Mana Whenua and facilitated via the New Zealand Department of Conservation
- Grant Northcott
- ESR laboratories
- New Zealand Ministry of Business, Innovation & Employment (MBIE) [C03X1802] Funding Source: New Zealand Ministry of Business, Innovation & Employment (MBIE)
This study provides a first assessment of microplastics (MPs) in stomach contents of 15 common dolphins from both single and mass stranding events along the New Zealand coast between 2019 and 2020. MPs were found in all examined individuals, with an average of 7.8 pieces per stomach. The most predominant polymer in fibres was polyethylene terephthalate (65%), while polypropylene (31%) and acrylonitrile butadiene styrene (20%) were more frequently recorded as fragments.
Here we provide a first assessment of microplastics (MPs) in stomach contents of 15 common dolphins (Delphinus delphis) from both single and mass stranding events along the New Zealand coast between 2019 and 2020. MPs were observed in all examined individuals, with an average of 7.8 pieces per stomach. Most MPs were fragments (77%, n = 90) as opposed to fibres (23%, n = 27), with translucent/clear (46%) the most prevalent colour. Fourier transform infrared (FTIR) spectroscopy revealed polyethylene terephthalate (65%) as the most predominant polymer in fibres, whereas polypropylene (31%) and acrylonitrile butadiene styrene (20%) were more frequently recorded as fragments. Mean fragment and fibre size was 584 mu m and 1567 mu m, respectively. No correlation between total number of MPs and biological parameters (total body length, age, sexual maturity, axillary girth, or blubber thickness) was observed, with similar levels of MPs observed between each of the mass stranding events. Considering MPs are being increasingly linked to a wide range of deleterious effects across taxa, these findings in a typically pelagic marine sentinel species warrants further investigation.
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