The effects of microplastic pollution on sea urchins has received little attention despite their ecological and economical importance. This is the first study to focus on adult sea urchins (Arbacia punctulata). These organisms were exposed to storm-like sediment resuspension of microplastic concentrations (9-μm polystyrene 25,000 spheres L-1) combined with salinity reductions (salinity 25 vs. 33) associated with high precipitation. Urchins were exposed to these parameters for 24 h before assessing righting times and for 48 h before assessing oxygen consumption rates. No significant impacts on urchin physiology were observed showing resilience to short-term exposures of storm-like induced microplastics and salinity. No microplastic particles blocked the madreporite pores indicating the active removal of particles by cilia and pedicellariae. Gut tissue samples indicated consumption of microplastics. Studies on more species are urgently required to determine their responses to plastic pollution to inform management decision-making processes.

中文翻译：

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短期暴露于类似暴风雨的微生物和盐度条件下不会影响成年海胆（Arbacia punctulata）生理。

尽管它们具有生态和经济重要性，但微量污染对海胆的影响却很少受到关注。这是第一个针对成年海胆（Arbacia punctulata）的研究。这些生物暴露于暴雨状沉积物的悬浮中，该沉积物具有微量的塑料浓度（9-μm聚苯乙烯25,000球L-1），且盐分降低（盐分25比33）与高降水量相关。在评估扶正时间之前，将海胆暴露于这些参数24小时，然后在评估耗氧率之前将其暴露于48小时。没有观察到对海胆生理的显着影响，显示出对暴风雨般的诱导的微塑料和盐分的短期暴露具有弹性。没有微塑性颗粒堵塞麦德普拉特孔，表明纤毛和小ic有效清除了颗粒。肠组织样本表明消耗了微塑料。迫切需要对更多物种进行研究，以确定其对塑料污染的反应，以指导管理决策过程。