Department of Environmental Engineering, Taizhou University, Taizhou, Zhejiang 318000, PR China.
Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, Jiangsu 210037, PR China.
Sci Total Environ. 2023 Aug 25;888:164197. doi: 10.1016/j.scitotenv.2023.164197. Epub 2023 May 16.
Despite studies have proposed that microplastics (MPs) could exert adverse effects on terrestrial ecosystems and biota, the occurrence of MPs in wild terrestrial insects has been rarely investigated. This study examined MPs in 261 long-horned beetle (Coleoptera: Cerambycidae) samples collected from four different Chinese cities. Detection frequency of MPs in long-horned beetles from different cities was 68-88 %. Long-horned beetles from Hangzhou (4.0 items/individual) had the highest mean abundance of MPs, followed by that from Wuhan (2.9 items/individual), Kunming (2.5 items/individual), and Chengdu (2.3 items/individual). The mean size of MPs in long-horned beetles from four Chinese cities was 381-690 μm. Fiber consistently represented the major shape of MPs in long-horned beetles from different Chinese cities, contributing 60, 54, 50, and 49 % of total items of MPs in Kunming, Chengdu, Hangzhou, and Wuhan, respectively. Polypropylene was the major polymer composition of MPs in long-horned beetles from Chengdu (68 % of total items of MPs) and Kunming (40 %). However, polyethylene and polyester were the major types of polymer compositions of MPs in long-horned beetles from Wuhan (39 % of total MP items) and Hangzhou (56 %), respectively. To our knowledge, this is the first study investigating the occurrence of MPs in wild terrestrial insects. These data are important for evaluating the risks of exposure to MPs for long-horned beetles.
尽管已有研究提出微塑料（MPs）可能对陆地生态系统和生物群产生不利影响，但野生陆地昆虫中 MPs 的存在却很少被研究过。本研究调查了来自中国四个不同城市的 261 只长角甲虫（鞘翅目：天牛科）样本中的 MPs。来自不同城市的长角甲虫中 MPs 的检出频率为 68-88%。来自杭州的长角甲虫（4.0 个/个体）的 MPs 平均丰度最高，其次是武汉（2.9 个/个体）、昆明（2.5 个/个体）和成都（2.3 个/个体）。来自四个中国城市的长角甲虫的 MPs 平均粒径为 381-690μm。纤维始终是来自不同中国城市长角甲虫中 MPs 的主要形状，分别占昆明、成都、杭州和武汉 MPs 总颗粒数的 60%、54%、50%和 49%。聚丙烯是成都（占 MPs 总颗粒数的 68%）和昆明（占 40%）长角甲虫中 MPs 的主要聚合物成分。然而，聚乙烯和聚酯是武汉（占 MPs 总颗粒数的 39%）和杭州（占 56%）长角甲虫中 MPs 的主要聚合物成分类型。据我们所知，这是首次研究野生陆地昆虫中 MPs 的存在情况。这些数据对于评估长角甲虫暴露于 MPs 的风险非常重要。
