Behavioural Studies of Vision in a Fish and Possible Relationships to the Environment
Over the past years a considerable body of behavioural data has been accumulated on the vision of the cyprinid fish Scardinius erythophthalmus (the rudd), and we now probably know as much about the visual capabilities of this species as of any other fish (Muntz and Northmore, 1970, 1971, 1973; Northmore and Muntz, 1974). The present chapter summarises these data, and discusses some of the problems they raise, including possible relationships to physiology and the visual tasks faced by the animals in their natural environment. A variety of behavioural methods were used. Since these yielded very different results they are briefly described here; a more detailed review of the problems involved in obtaining sensory data by behavioural means is given in the previous paper (Yager and Northmore, this volume).
KeywordsSpectral Sensitivity Visual Pigment Weber Fraction Large Stimulus Envelope Model
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