Abandoned, lost, and discarded fishing gear (ALDFG) poses a global challenge for marine ecosystems because it results in the destruction of algal forests, the largest oceanic carbon dioxide sinks. Biodegradable polybutylene succinate (PBS), which has a tensile strength similar to that of nylon, has been suggested as a potential fishing-gear material. However, its slow degradation in the marine environment and limited drapability need to be addressed before it can be used in environmentally friendly fishing gear. Inspired by the mussel byssus, a thread-like holdfast known for its stiff yet extensible mechanical properties, we developed fishing gear using a mussel-byssus-mimetic fiber (artificial byssus fiber, ABf) structure. The ABf was composed of poly(butylene adipate--butylene terephthalate) (PBAT) fibers with favorable draping characteristics coated with mechanically resilient and PBS, which demonstrated sufficient toughness and draping properties for use in fishing gear. AB shows promise as a material for fishing-gear capable of mitigating issues related to ALDFG, especially given its marine degradability by microbial strains that degrade PBS and PBAT. Furthermore, it could serve as a substrate for ocean afforestation, given the improved settlement and growth of seaweed spores () on AB. Overall, AB-based fishing gear is expected to enhance macroalgal forest conservation and expansion and facilitate marine carbon capture through marine afforestation.

中文翻译：

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具有增强悬垂性和生物降解性的渔具：受贻贝足丝启发的人造环保纤维

废弃、丢失和丢弃的渔具 (ALDFG) 对海洋生态系统构成了全球性挑战，因为它会导致藻林（最大的海洋二氧化碳汇）的破坏。可生物降解的聚丁二酸丁二醇酯（PBS）的拉伸强度与尼龙相似，被认为是一种潜在的渔具材料。然而，在将其用于环保渔具之前，需要解决其在海洋环境中缓慢降解和有限的悬垂性的问题。受贻贝足丝（一种以其坚硬而可延伸的机械性能而闻名的线状固定器）的启发，我们开发了使用仿贻贝足丝纤维（人造足丝纤维，ABf）结构的渔具。 ABf 由具有良好悬垂特性的聚（己二酸丁二醇酯 - 对苯二甲酸丁二醇酯）（PBAT）纤维组成，表面涂有机械弹性和 PBS，表现出足够的韧性和悬垂性能，可用于渔具。 AB 作为一种能够缓解 ALDFG 相关问题的渔具材料显示出了良好的前景，特别是考虑到其在海洋中可被降解 PBS 和 PBAT 的微生物菌株降解。此外，鉴于AB上海藻孢子的沉降和生长得到改善，它可以作为海洋造林的基质。总体而言，基于AB的渔具预计将加强大型藻类森林的保护和扩张，并通过海洋造林促进海洋碳捕获。