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Chemosensory responses of ciliates: A sensitive end point in xenobiotic hazard assessment by W. Pauli; S. Berger; S. Schmitz; L. Jaskulka is a Environmental Science article available to read on EtoBox.

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It is known that ciliates exhibit chemosensory behavior. An assay implementing this response was performed with Tetrahymena themophila, a well-studied representative of the ciliates. A concentration-dependent avoiding reaction was observed for all substances of the test battery, comprising a heterogeneous set of 43 compounds from the European Inventory of Existing Chemicals. Comparisons were made between toxic data from this chemosensory test and chemical concentraticns leading to effects on Tetrahymena growth, and EC values from recommended aquatic toxicity tests. Low correlation coefficients indicate that the chemosensory response reflects chemical interactions, which cannot be adequately explained by these other tests. The chemosensory assay proved to be more sensitive in the majority of cases than the Tetrahymena growth test and standard tests with fish and Daphnia. Tetrahymena is able to recognize and avoid about half the substances at concentrations lower than those effective in the algaegrowth inhibition test. The behavioral response of Tetrahymena could provide further toxicological information and serve as a complementary sublethal end point for ecotoxicological screening

Who reads Chemosensory responses of ciliates: A sensitive end point in xenobiotic hazard assessment?

Author

W. Pauli; S. Berger; S. Schmitz; L. Jaskulka

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1053-4725)

Published

1994

Language

EN

Field

Environmental Science (Physical Sciences)