New Zealand Journal of Marine and Freshwater Research abstracts

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POSSIBLE DDT MORTALITY IN YOUNG RAINBOW TROUT

J. C. Dacre*

Toxicology Research Unit, Medical School, University of Otago, Dunedin, New Zealand

D. Scott

Zoology Department, University of Otago, Dunedin, New Zealand

Abstract An unusually high mortality of eggs and fry of rainbow trout (Salmo gairdneri Richardson) from Lake Taupo in 1966 was possibly caused by excessive exposure to DDT and its metabolites. The egg and fry mortality (44.6%), and DDT level in the fry (4.63 ppm), was compared with other similar cases of possible DDT poisoning in young salmonids, both in New Zealand and North America. Other possible adverse effects on young salmonids exposed to DDT were discussed.

N.Z. Journal of Marine and Freshwater Research 5 (1): 58-65
(Received for publication 8 May 1970

PDF file of entire paper: medium quality (463K); (scanned from paper original: notes about this process)

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