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Providing evidence to improve practice

Action: Asian clams: Change temperature of the water Control of Freshwater Invasive Species

Key messages

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  • A controlled laboratory study in the USA found that temperatures of 36°C or higher killed Asian clams within or after four days.


Supporting evidence from individual studies


A controlled laboratory study conducted between 1976 and 1977 on specimens from a river in Virginia, USA (Cherry et al. 1980) found that exposure to temperatures of 36°C and higher killed Asian clams Corbicula fluminea. All clams were dead after either four days at 36°C or two days at 37°C compared with clams surviving in a control treatment at 25°C. Clams were placed in seven heated aquatic chambers, plus one control chamber. In total, 19 clams were placed in each chamber. Over a 24-hour period, infrared lamps raised chamber temperatures to 27, 29, 31, 33, 35, 36 and 37°C. These temperatures were held for four days. A control group was maintained at 25°C. Mortality status of clams was checked and recorded.

Referenced papers

Please cite as:

Aldridge, D., Ockendon, N., Rocha, R., Smith, R.K. & Sutherland, W.J. (2019) Some aspects of control of freshwater invasive species. Pages 569-602 in: W.J. Sutherland, L.V. Dicks, N. Ockendon, S.O. Petrovan & R.K. Smith (eds) What Works in Conservation 2019. Open Book Publishers, Cambridge, UK.