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New Zealand Journal of Marine and Freshwater Research abstractsEFFECTS OF ELECTRIC FISHING ON THE INVERTEBRATE FAUNA OF A NEW ZEALAND STREAMChris R. Fowles*Fisheries Laboratory, Ministry of Agriculture and Fisheries, Christchurch, New ZealandAbstract Electric fishing experiments were made in Woolly Creek, part of the Glenariffe system of tributaries to the Rakaia River, South Island, New Zealand, during December 1972. Two operators electric fished a 25-m length of stream from the banks, with three runs in both upstream and downstream directions. Large increases in drift were caused by the electric fishing process, which had a marked effect on the Ephemeroptera and the oligochaete families Tubificidae and Lumbriculidae. Electric fishing caused a loss to the drift of 9.6% of the total benthos in the experimental area. This was slightly more than the 8% decrease in benthic numbers calculated from bottom samples. Electric fishing caused a loss to the drift of 9.6% of the total benthos in the experimental area. This was slightly more than the 8% decrease in benthic numbers calculated from bottom samples.
(Received 8 August 1973; revision received 8 August 1974) PDF file of entire paper: medium quality (588K); (scanned from paper original: notes about this process) This year's abstracts | Journal home page | All abstracts | Publishing home page |