Wang Ya-Xin, Fan Jiang-Tao, Gong Yi, Niu Cheng-Gong, Chen Xin-Jun
College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China.
Key Laboratory of Open-Sea Fishery Development, Ministry of Agriculture and Rural Affairs, Guangzhou 510300, China.
Ying Yong Sheng Tai Xue Bao. 2022 Jan;33(1):255-260. doi: 10.13287/j.1001-9332.202201.038.
Microplastic (MP) ingestion by marine animals has been well documented, but less being known about pelagic squid. Jumbo squid supports the world's largest cephalopod fishery and plays an important ecological role in the Eastern Pacific Ocean. In this study, taken from the open sea of the Peruvian Exclusive Economic Zone were selected as research objects. We estimated the abundance and characteristics of MPs in the stomach and intestine of and investigated the differences between tissues and sexes. Similar abundance and characteristics of MPs were observed in the same tissue of females and males. However, the stomach had a higher abundance of MPs with larger size than the intestine, while the MP abundance by stomach wet weight was lower than that of the intestine. The MPs were predominantly fiber-shaped, with blue or black color. The most frequent polymers were high-density cellophane and polyacrylic acid. These polymers could sink into deeper sea layers and were available for living there during the daytime. Our findings revealed the distribution pattern of MPs in the waters of the Peruvian fishing ground. This study could improve our understanding of the MP contamination level in pelagic squid, and have implications for evaluating the ecological effects of MP on cephalopods.
海洋动物摄入微塑料（MP）已有充分记录，但关于远洋鱿鱼的了解较少。巨型鱿鱼支撑着世界上最大的头足类渔业，并且在东太平洋发挥着重要的生态作用。在本研究中，取自秘鲁专属经济区公海的（样本）被选为研究对象。我们估计了（巨型鱿鱼）胃和肠道中微塑料的丰度和特征，并研究了不同组织和性别之间的差异。在雌性和雄性的相同组织中观察到了相似的微塑料丰度和特征。然而，胃中的微塑料丰度高于肠道，且尺寸更大，而按胃湿重计算的微塑料丰度低于肠道。微塑料主要呈纤维状，颜色为蓝色或黑色。最常见的聚合物是高密度玻璃纸和聚丙烯酸。这些聚合物可以沉入更深的海层，供（巨型鱿鱼）白天在那里生存时获取。我们的研究结果揭示了秘鲁渔场水域中微塑料的分布模式。这项研究可以增进我们对远洋鱿鱼中微塑料污染水平的了解，并对评估微塑料对头足类动物的生态影响具有启示意义。
