Impacts of micro- and nanoplastics on a marine bivalve of commercial and ecological relevance

微米和纳米塑料对具有商业和生态相关性的海洋双壳类动物的影响

• 批准号: 577674-2022
• 负责人: Hecker, MarkusM
• 金额: $ 1.82万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=764627
• 关键词: Impacts; micro; nanoplastics; marine; bivalve

Plastic pollution has become one of the foremost environmental issues of the 21st century. A staggering 4.6-12.7M metric tons of plastic debris enter the ocean annually with the Philippines being one of the major contributors in the central Indo-Pacific. Micro- and nanoplastics (MNPs) are of particular concern as they can be ingested by organisms including marine bivalves, and can cause adverse effects on their health. Such impacts of MNPs are especially problematic in low-income countries such as the Philippines, where species such C. iredalei are an essential part of regional aquaculture and fisheries as they provide livelihood for coastal communities composed of fishermen and informal settlers that are part of marginalized sectors. Also, the specific mechanisms by which MNPs cause effects in bivalves in general remain poorly described in the global scientific literature. Therefore, this study will comprehensively characterize the specific molecular mechanism by which microplastic ingestion can affect the growth, ecophysiology, and the associated microbiome of C. iredalei, and through this, provide novel information supporting the conservation of this and other closely related species, including oysters and other shellfish native to Canada. This project will be realized through a trans-Pacific research and student training partnership between the University of Saskatchewan (USask) and the University of the Philippines (MSI), which we intend to develop into a long-term and fruitful partnership that will be uniquely positioned to address global issues in marine conservation and protection.

塑料污染已成为21世纪最重要的环境问题之一。每年有惊人的460 - 1270万吨塑料垃圾进入海洋，菲律宾是印度太平洋中部的主要贡献者之一。微塑料和纳米塑料尤其令人担忧，因为它们可被包括海洋双壳类在内的生物摄入，并可能对其健康造成不利影响。在菲律宾等低收入国家，跨国公司的这种影响尤其成问题，在这些国家，像C. iredalei这样的物种是区域水产养殖和渔业的重要组成部分，因为它们为沿海社区提供生计，这些社区由渔民和非正式定居者组成，是边缘化部门的一部分。此外，在全球科学文献中，MNPs对双壳类动物产生影响的具体机制仍未得到充分描述。因此，本研究将全面表征微塑料摄入影响C. iredalei生长、生态生理和相关微生物组的具体分子机制，并通过这一研究，为保护C. iredalei和其他密切相关的物种（包括加拿大本土的牡蛎和其他贝类）提供新的信息。该项目将通过萨斯喀彻温大学（USask）和菲律宾大学（MSI）之间的跨太平洋研究和学生培训伙伴关系来实现，我们打算将其发展成为一种长期和富有成效的伙伴关系，将具有独特的地位，以解决海洋养护和保护方面的全球问题。