STP971

    Behavioral Responses to Low Levels of Toxic Substances in Rainbow Trout (Salmo Gairdneri, Rich)

    Published: Jan 1988


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    Abstract

    An avoidance apparatus was designed with a 10-m-long channel to obtain time-lapsed, three-dimensional display of fish positioning. With this new apparatus, effects of the toxicant dodecyl sodium sulfate (DSS) and two different polymers and monomers were tested on rainbow trout. The results show that four types of avoidance-preference, dose-response curves may be observed and that at low concentrations (0.01 to 0.08 mg/L for the DSS and in a range of 0.4 to 4 mg/L for different monomers and polymers) some toxicants may attract rather than repel certain organisms. This response is interpreted as representing behavioral extension of hormesis, the name given to the stimulatory effects caused by low levels of potentially toxic agents. An interpretation of unexplained literature data presents findings that endorse the concept of behavioral hormesis.

    Keywords:

    avoidance behavior, hormesis, rainbow trout (, Salmo gairdneri, , Rich), dose-response curve, toxic substances


    Author Information:

    Hadjinicolaou, J
    Assistant professor, McGill University, Montreal, Quebec

    LaRoche, G
    Research scientist, SNC Engineering Consulting Group, Montreal, Quebec


    Paper ID: STP34050S

    Committee/Subcommittee: E47.01

    DOI: 10.1520/STP34050S


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