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当前位置: 首页 > 文章 > 大洋性头足类胃和肠道中的微塑料——以秘鲁外海茎柔鱼为例 应用生态学报 2022 (1) 255-260
Position: Home > Articles > Microplastics in the stomach and intestine of pelagic squid: A case study of Dosidicus gigas in open sea of Peru Chinese Journal of Applied Ecology 2022 (1) 255-260

大洋性头足类胃和肠道中的微塑料——以秘鲁外海茎柔鱼为例

作  者：
王亚新;范江涛;贡艺;牛成功;陈新军
单  位：
农业农村部大洋渔业开发重点实验室;大洋渔业资源可持续开发教育部重点实验室;上海海洋大学海洋科学学院;农业农村部外海渔业开发重点实验室;国家远洋渔业工程技术研究中心
关键词：
茎柔鱼;微塑料;胃;肠道
摘  要：
海洋动物摄入微塑料已得到广泛证实,但对于大洋性头足类动物仍存在较大空白。茎柔鱼是头足类商业捕捞中产量最高的物种,在东太平洋生态系统占主导地位。本研究以秘鲁外海茎柔鱼成体为对象,定量分析胃和肠道内微塑料的丰度与组成,并探究微塑料在组织和性别间的潜在差异。结果表明:茎柔鱼雌、雄个体相同组织内存在相似的微塑料丰度与组成。组织间比较发现,茎柔鱼胃中微塑料的丰度和粒径均高于肠道,胃单位组织重量的丰度低于肠道。胃和肠道中微塑料形状均以纤维为主(占比>94.3%),颜色以蓝色和黑色为主(总占比>79.5%),聚合物类型主要是密度大于海水的赛璐酚(占比74.4%)和聚丙烯酸(占比11.0%),这些微塑料在下沉过程中可能被白天栖息在深海的茎柔鱼所摄入,初步反映了秘鲁渔场水体中的微塑料分布特征。研究结果有助于了解大洋性头足类的微塑料污染现状,并为进一步研究微塑料对头足类的生态效应提供基础。
译  名：
Microplastics in the stomach and intestine of pelagic squid: A case study of Dosidicus gigas in open sea of Peru
作  者：
WANG Ya-xin;FAN Jiang-tao;GONG Yi;NIU Cheng-gong;CHEN Xin-jun;College of Marine Sciences, Shanghai Ocean University;Key Laboratory of Open-Sea Fishery Development, Ministry of Agriculture and Rural Affairs;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education;National Enginee-ring Research Center for Oceanic Fisheries;Key Laboratory of Oceanic Fisheries Exploration, Ministry of Agriculture and Rural Affairs;
关键词：
Dosidicus gigas;;microplastic;;stomach;;intestine
摘  要：
Microplastic(MP) ingestion by marine animals has been well documented, but less being known about pelagic squid. Jumbo squid Dosidicus gigas supports the world's largest cephalopod fishery and plays an important ecological role in the Eastern Pacific Ocean. In this study, D. gigas 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 D. gigas 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 D. gigas 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.

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