Slater Museum of Natural History, University of Puget Sound, Tacoma, WA 98416, United States.
Slater Museum of Natural History, University of Puget Sound, Tacoma, WA 98416, United States.
Mar Pollut Bull. 2017 Apr 15;117(1-2):496-498. doi: 10.1016/j.marpolbul.2017.01.076. Epub 2017 Feb 2.
Oceanic plastic debris found in the digestive tracts of seabirds includes industrial plastic pellets and post-consumer user plastics. We examined whether the amount and type of plastic ingested by Cassin's Auklets (Ptychoramphus aleuticus) is changing by surveying the stomach contents of 171 Cassin's Auklets stranded along the Washington and Oregon coasts in 2014. We found that 41.5% of the birds contained plastic in their ventriculi, similar to values from the North Subarctic Pacific reported in the 1980s. Industrial pellets were found in 22.8% of our samples, and accounted for 28.1% of all the plastic pieces found. Industrial pellets tended to be larger than pieces of user plastic and accounted for 40.2% of total plastic weight. These industrial pellets were significantly smaller than those found in other species, suggesting either that Cassin's Auklets selected smaller plastic particles or that plastic was retained in ventriculi and worn down.
在海鸟的消化道中发现了海洋塑料碎片，其中包括工业塑料颗粒和消费后塑料。我们通过调查 2014 年在华盛顿和俄勒冈海岸搁浅的 171 只卡辛氏海雀的胃内容物，研究了卡辛氏海雀摄入的塑料数量和类型是否发生了变化。我们发现，41.5%的鸟类的胃中有塑料，这与 20 世纪 80 年代在北亚北极太平洋报告的值相似。在我们的样本中发现了 22.8%的工业颗粒，占所有发现的塑料碎片的 28.1%。工业颗粒通常比用户塑料碎片大，占总塑料重量的 40.2%。这些工业颗粒明显小于在其他物种中发现的颗粒，这表明卡辛氏海雀选择了较小的塑料颗粒，或者塑料在胃中被保留并磨损。
