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Impedance conversion as a method of research for assessing behavioural responses of aquatic invertebrates

Research paper by F. Heinis, W. R. Swain

Indexed on: 01 Dec '85Published on: 01 Dec '85Published in: Aquatic Ecology



Abstract

The concept of non-invasive, remote monitoring of the behaviour of aquatic organisms has been a long-sought research goal. In an effort to overcome the induction of artefacts and the generation of unnatural behaviour, a system of quantification of organism activity was developed based upon the theory of impedance conversion. The system is described in detail, and application was made to assess the respiratory behaviour of three aquatic invertebrates,Daphnia magna, Chironomus sp., andTanytarsus sp. in response to declining oxygen tensions. The system shows broad applicability for quantifying organism behaviour over four orders of magnitude in size range.