Articles | Volume 18, issue 23
Research article
07 Dec 2021
Research article |  | 07 Dec 2021

Anthropogenic CO2-mediated freshwater acidification limits survival, calcification, metabolism, and behaviour in stress-tolerant freshwater crustaceans

Alex R. Quijada-Rodriguez, Pou-Long Kuan, Po-Hsuan Sung, Mao-Ting Hsu, Garett J. P. Allen, Pung Pung Hwang, Yung-Che Tseng, and Dirk Weihrauch

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Cited articles

Alenius, B. and Munguia, P.: Effects of pH variability on the intertidal isopod, Paradella dianae, Mar. Freshw. Behav. Phy., 45, 245–259,, 2012. 
Allen, G. J. P., Kuan, P. L., Tseng, Y. C., Hwang, P. P., Quijada-Rodriguez, A. R., and Weihrauch, D.: Specialized adaptations allow vent-endemic crabs (Xenograpsus testudinatus) to thrive under extreme environmental hypercapnia, Sci. Rep.-UK, 10, 1–13,, 2020. 
Appelhans, Y. S., Thomsen, J., Pansch, C., Melzner, F., and Wahl, M.: Sour times: Seawater acidification effects on growth, feeding behaviour and acid-base status of Asterias rubens and Carcinus maenas, Mar. Ecol.-Prog. Ser., 459, 85–97,, 2012. 
Balian, E. V., Segers, H., Lévèque, C., and Martens, K.: The Freshwater Animal Diversity Assessment: an overview of the results, Hydrobiologia, 595, 627–637,, 2008. 
Borges, F. O., Figueiredo, C., Sampaio, E., Rosa, R., and Grilo, T. F.: Transgenerational deleterious effects of ocean acidification on the reproductive success of a keystone crustacean (Gammarus locusta), Mar. Environ. Res., 138, 55–64,, 2018. 
Short summary
Anthropogenic CO2 is chronically acidifying aquatic ecosystems. We aimed to determine the impact of future freshwater acidification on the physiology and behaviour of an important aquaculture crustacean, Chinese mitten crabs. We report that elevated freshwater CO2 levels lead to impairment of calcification, locomotor behaviour, and survival and reduced metabolism in this species. Results suggest that present-day calcifying invertebrates could be heavily affected by freshwater acidification.
Final-revised paper