Seawater acidification and freshening in the intertidal zone of Marian Cove, Antarctica, which occurs by the freshwater inflow from snow fields and glaciers, could affect the physiology and behavior of intertidal marine organisms. In this study, we exposed Antarctic limpets, Nacella concinna, to two different pH (8.00 and 7.55) and salinity (34.0 and 27.0 psu) levels and measured their righting ability after being flipped over, mortality, condition factor, and shell dissolution. During the 35-day exposure, there was no significant difference in behavior and mortality between different treatments. However, the condition factor was negatively affected by low salinity. Both low pH and low salinity negatively influenced shell formation by decreasing the aragonite saturation state (Ω_arg) and enhancing shell dissolution. Our results suggest that, though limpets can tolerate short-term low pH and salinity conditions, intrusions of meltwater accompanied by the glacial retreat may act as a serious threat to the population of N. concinna.

中文翻译：

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融水流入引起的低pH值和低盐度对南极洲壁m的行为和生理状况的影响

南极玛丽安湾潮间带的海水酸化和新鲜化是由雪原和冰川的淡水流入引起的，可能影响潮间带海洋生物的生理和行为。在这项研究中，我们使南极帽贝Nacona continna暴露于两个不同的pH（8.00和7.55）和盐度（34.0和27.0 psu）水平，并测量了翻转后它们的扶正能力，死亡率，条件因子和壳溶解。在35天的暴露期间，不同治疗之间的行为和死亡率没有显着差异。但是，低盐度对条件因子有负面影响。低pH和低盐度都会通过降低文石饱和状态（_Ωarg）并增强外壳溶解度。我们的研究结果表明，尽管帽贝可以忍受短期的低pH和盐度条件，但融化水的入侵以及冰川的退缩可能会严重威胁康肯猪笼草的种群。