New Zealand Journal of Marine and Freshwater Research abstracts

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Acute toxicity of increased pH to the freshwater shrimp Paratya curvirostris

T. L. Shaw

Auckland Regional Authority, Water Laboratory, Private Bag, Auckland, New Zealand

Abstract The highly alkaline wastes from the ash lagoons at the Huntly thermal power station are a potential hazard to the upstream migration of the shrimp Paratya curvirostris. To test the response of the shrimp to such wastes migrating shrimp were exposed for 48 h in the laboratory to a pH range of 7.47-10.66. The relation between the median period of survival and pH was a typical acute lethal response with an asymptotic value of pH 9.71.

Keywords Paratya curvirostris; migrations; water pollution; Waikato River; alkalinity; power plants; toxicity tests.

New Zealand Journal of Marine & Freshwater Research, 1981, 15(1): 91-93
Received 15 September 1980; revision received 13 November 1980

PDF file of entire paper: medium quality (178K); (scanned from paper original: notes about this process)

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