Zebra mussels (Dreissena polymorpha ) have exacerbated the decline of native freshwater mussels (order Unionida) in North America since their arrival in the 1980s. Options for controlling invasive mussels, particularly in unionid mussel habitats, are limited. Previously, carbon dioxide (CO₂) showed selective toxicity for zebra mussels, relative to unionids, when applied in cool water (12 °C). We first determined 96‐h lethal concentrations of CO₂ at 5 and 20 °C to zebra mussels and responses of juvenile plain pocketbook (Lampsilis cardium ). Next, we compared the time to lethality for zebra mussels at 5, 12, and 20 °C during exposure to partial pressure of CO₂ (PCO₂) values of 110 to 120 atm (1 atm = 101.325 kPa) and responses of juvenile plain pocketbook and fragile papershell (Leptodea fragilis ). We found efficacious CO₂ treatment regimens at each temperature that were minimally lethal to unionids. At 5 °C, plain pocketbook survived 96‐h exposure to the highest PCO₂ treatment (139 atm). At 20 °C, the 96‐h lethal concentration to 10% of animals (LC10) for plain pocketbook (173 atm PCO₂, 95% CI 147–198 atm) was higher than the LC99 for zebra mussels (118 atm PCO₂, 95% CI 109–127 atm). Lethal time to 99% mortality (LT99) of zebra mussels in 110 to 120 atm PCO₂ ranged from 100 h at 20 °C to 300 h at 5 °C. Mean survival of both plain pocketbook and fragile papershell juveniles exceeded 85% in LT99 CO₂ treatments at all temperatures. Short‐term infusion of 100 to 200 atm PCO₂ at a range of water temperatures could reduce biofouling by zebra mussels with limited adverse effects on unionid mussels. Environ Toxicol Chem 2020;39:1546–1557. Published 2020. This article is a U.S. Government work and is in the public domain in the USA. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.

中文翻译：

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一只入侵贻贝和两只联合贻贝对二氧化碳浓度升高的温度相关反应。


自 20 世纪 80 年代抵达北美以来，斑马贻贝 ( Dreissena polymorpha ) 加剧了北美本土淡水贻贝（Unionida 目）的数量减少。控制入侵贻贝的选择，特别是在联合贻贝栖息地，是有限的。此前，当二氧化碳 (CO 2 ) 在冷水 (12 °C) 中使用时，相对于尤尼贝类，二氧化碳 (CO ₂ ) 对斑马贻贝表现出选择性毒性。我们首先确定了 5 和 20 °C 下 96 小时 CO ₂对斑马贻贝的致死浓度以及幼年普通钱包 ( Lampsiliscardium ) 的反应。接下来，我们比较了斑马贻贝在 5、12 和 20 °C 暴露于 110 至 120 atm（1 atm = 101.325 kPa）的 CO ₂分压 (PCO ₂ ) 值期间的致死时间以及幼体平原的反应。钱包和易碎的纸壳（ Leptodea fragilis ）。我们发现在每个温度下有效的CO ₂治疗方案对尤尼尼德的致死率最低。在 5 °C 下，普通钱包在最高 PCO ₂处理（139 atm）下暴露 96 小时仍能存活。 20 °C 时，普通钱包（173 atm PCO ₂ ，​​95% CI 147-198 atm）对 10% 动物的 96 小时致死浓度（LC10）高于斑马贻贝的 LC99（118 atm PCO ₂ ， 95% CI 109–127 个大气压）。斑马贻贝在 110 至 120 atm PCO ₂中达到 99% 死亡率 (LT99) 的致死时间范围为 20 °C 下 100 小时至 5 °C 下 300 小时。在所有温度下，LT99 CO ₂处理中普通钱包和脆弱的纸壳幼鱼的平均存活率均超过 85%。 在一定水温范围内短期注入 100 至 200 atm PCO ₂可以减少斑马贻贝的生物污染，同时对 Unionid 贻贝的不利影响有限。环境毒理学化学2020；39：1546–1557。 2020 年出版。本文是美国政府的作品，在美国属于公共领域。 《环境毒理学和化学》由 Wiley periodicals LLC 代表 SETAC 出版。