Efffects of hypothalamic lesions on the food intake of the goldfish (Carassius auratus)

Michael Roberts, George Savage

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    38 Citations (Scopus)

    Abstract

    Goldfish were trained to perform an operant response in order to obtain food, thereby allowing the food intake to be accurately determined. The normal daily food intake was established for each fish before it was given a sham operation or bilateral hypothalamic lesions. It was then observed over a period of up to 60 days. Lesions of the lateral areas of the hypothalamus were found to cause cessations of operant feeding of up to 60 days duration, and cessations of feeding on manually presented food of up to 35 days. Lesions of the anterior-medial areas were followed by cessations of operant feeding of up to 26 days. The post-lesioning food intake of fish lesioned in the posterior-medial area was similar to that of the control fish. No increases in operant feeding were observed after lesioning. The results are considered to be consistent with a genuine aphagia induced by lesions of the lateral hypothalamus.
    Original languageEnglish
    Pages (from-to)150-164
    JournalBrain, Behavior and Evolution
    Volume15
    Issue number2
    DOIs
    Publication statusPublished - 1978

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