New Zealand Journal of Marine and Freshwater Research abstracts

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ORGANOCHLORINE INSECTICIDES IN RAINBOW TROUT FROM THREE NORTH ISLAND LAKES

S. R. B. Solly
Valerie Shanks

Wallaceville Animal Research Centre, Department of Agriculture, Wellington

Abstract From 12 rainbow trout (Salmo gairdneri Richardson) taken from each of three lakes (Rerewhakaaitu, Opouri and Okataina) in the Rotorua district, N.Z., samples of liver, skeletal muscle and, from mature fish, the gonads were examined for organochlorine insecticides.

Lindane, heptachlor and heptachlor epoxide were not detected in any of the samples. Traces of dieldrin were detected only in trout taken from Rerewhakaaitu Lake. In all fish examined, pp'-HDT, pp'JDOD and pp'-DDE were detected in all three tissues. The highest concentrations were found in some of the ovaries of fish from Rerewhakaaitu Lake, the catchment area of which had been extensively topdressed with DDT. Although most of the catchment area of Lake Okataina had never been topdressed with DDT, fish from this lake contained small amounts of DDT and its metabolites.

N.Z. Jl mar. Freshwat. Res. 3: 585-90 Sig. - 8
(Received for publication 10 July 1969) Summary

PDF file of entire paper: medium quality (284K); (scanned from paper original: notes about this process)

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