Effects of Nylon Microplastic on Feeding, Lipid Accumulation, and Moulting in a Coldwater Copepod

摘要: Microplastic debris is a pervasive environmental contaminant that has the potential to impact health of biota, although its modes action remain somewhat unclear. The current study tested hypothesis exposure fibrous and particulate microplastics would alter feeding, impacting on lipid accumulation, normal development (e.g., growth, moulting) in an ecologically important coldwater copepod Calanus finmarchicus. Preadult copepods were incubated seawater containing mixed assemblage cultured microalgae (control), with addition ∼50 mL-1 nylon microplastic granules (10-30 μm) or fibers (10 × 30 μm), which are similar shape size microalgal prey. additive chemical profiles showed presence stabilizers, lubricants, monomer residues, byproducts. Prey selectivity was significantly altered exposed (ANOVA, P < 0.01) resulting nonsignificant 40% decrease algal ingestion rates = 0.07), accumulation 0.62). Both triggered premature moulting juvenile (Bernoulli GLM, 0.01). Our results emphasize profile can influence bioavailability toxicity, drawing attention importance using environmentally relevant chemically profiling plastics used toxicity testing.