College of Marine Sciences, Shanghai Ocean University, Shanghai, China; Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai, China; National Engineering Research Centre for Oceanic Fisheries, Shanghai Ocean University, Shanghai, China; Key Laboratory of Oceanic Fisheries Exploration, Ministry of Agriculture and Rural Affairs, Shanghai, China.
College of Marine Sciences, Shanghai Ocean University, Shanghai, China.
Mar Pollut Bull. 2021 Aug;169:112509. doi: 10.1016/j.marpolbul.2021.112509. Epub 2021 May 21.
Microplastics (MPs) found in marine invertebrates have aroused great concern, but MP ingestion by cephalopods is rare. To evaluate MP contamination in commercially important pelagic squids, we examined the abundance and characteristics of MPs in the gill, intestine, and stomach of jumbo squid Dosidicus gigas (30.9 to 65.0 cm mantle length), collected from the northern Humboldt Current. The average abundance ranged from 4.0 to 7.4 items/individual and 0.2 to 0.7 items/g wet weight for the three tissues. The MPs were sized 80.75 to 4632.27 μm, with larger MPs generally found in the stomach. The majority of MPs were fibrous in shape, blue or black-gray in color, and cellophane in composition. These results revealed the MP distribution in D. gigas and could be driven by its movement pattern and habitat use. Furthermore, this study provides evidence that adherence to gills is probably an alternative means by which pelagic squid accumulate MPs.
海洋无脊椎动物体内发现的微塑料（MPs）引起了极大关注，但头足类动物摄入 MPs 的情况很少见。为了评估商业上重要的远洋鱿鱼中 MPs 的污染情况，我们研究了在北洪堡海流中采集的巨型鱿鱼 Dosidicus gigas（30.9 至 65.0 厘米套膜长）的鳃、肠和胃中 MPs 的丰度和特征。三个组织中 MPs 的平均丰度范围分别为 4.0 至 7.4 个/个体和 0.2 至 0.7 个/克湿重。MPs 的尺寸为 80.75 至 4632.27 μm，较大的 MPs 通常在胃中发现。大多数 MPs 呈纤维状，呈蓝色或黑灰色，由玻璃纸组成。这些结果揭示了 D. gigas 中 MPs 的分布情况，这可能是由其运动模式和栖息地利用驱动的。此外，本研究提供了证据表明，附着在鳃上可能是远洋鱿鱼积累 MPs 的另一种方式。
