Port Townsend Marine Science Center, 532 Battery Way, Port Townsend, WA 98368, United States.
Mar Pollut Bull. 2012 Nov;64(11):2351-6. doi: 10.1016/j.marpolbul.2012.08.020. Epub 2012 Sep 17.
We analyzed dietary habits and presence of plastic in 589 boluses of Glaucous-winged Gulls (Larus glaucescens) as one of two studies on the impact of plastics on marine life in the US Salish Sea. Volunteers dissected boluses collected (2007-2010) from Protection Island, Washington. Components were separated into 23 food and non-food categories. Plastic was found in 12.2% of boluses, with plastic film being the most common plastic form. No diet specialization was observed. Vegetation was the most abundant component, found in 91.3% of boluses. No relationship was observed between any dietary items and occurrence or type of plastic found. Load and potential ecological impact in the marine environment can be expected to increase concurrently with increasing plastic use and number and variety of plastic sources. Future studies are necessary to understand the impacts of plastic ingestion on this species.
我们分析了 589 个斑头秋沙鸭（Larus glaucescens）的饮食习惯和体内的塑料存在情况，这是我们在美国萨利希海（US Salish Sea）开展的两项研究之一，旨在研究塑料对海洋生物的影响。志愿者们解剖了从华盛顿保护岛（Protection Island）收集的（2007-2010 年）鸟粪。将其分为 23 种食物和非食物类，并发现 12.2%的鸟粪中含有塑料，其中塑料薄膜是最常见的塑料形式。研究未发现任何饮食专门化现象。植物类是最丰富的成分，在 91.3%的鸟粪中都有发现。未发现任何饮食项目与发现的塑料存在或类型之间存在关系。预计随着塑料使用量的增加，以及塑料来源数量和种类的增加，海洋环境中的负载和潜在生态影响将同步增加。未来的研究有必要了解这种物种吞食塑料的影响。
