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Related Experiment Videos

Meal patterns of dormice.

N Mrosovsky, M Boshes

    Appetite
    |June 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    Dormice meal patterns show changes in frequency and size related to food intake levels. These feeding patterns are distinct from seasonal hibernation changes, highlighting separate regulatory mechanisms.

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    Area of Science:

    • Animal behavior
    • Chronobiology
    • Physiology

    Background:

    • Dormice (Glis glis) exhibit distinct feeding and body weight cycles influenced by ambient temperature.
    • Understanding meal patterns is crucial for deciphering metabolic regulation in hibernating species.

    Purpose of the Study:

    • To investigate the meal patterns of dormice at a non-hibernation-inducing temperature (25°C).
    • To correlate changes in meal patterns with varying levels of food intake.
    • To differentiate mechanisms underlying circadian feeding from seasonal changes.

    Main Methods:

    • Observation of meal patterns (frequency, size, rate of ingestion) in dormice at 25°C.
    • Analysis of food intake levels and body weight fluctuations over approximately 2-month cycles.

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  • Correlation analysis of postprandial intervals and feeding behavior during different light-dark phases (LD 12:12).

    • Main Results:

    • Meal frequency showed the most significant changes, increasing when food intake was higher.
    • Meal size also increased with higher food intake, while the rate of ingestion remained stable.
    • Dormice consumed 70% of their food during the dark phase, with similar meal sizes but increased frequency during both day and night when intake was high.

    Conclusions:

    • Feeding patterns in dormice at 25°C are characterized by adaptable meal frequency and size in response to food availability.
    • Circadian feeding rhythms appear to be regulated by different mechanisms than those involved in long-term seasonal feeding changes in hibernators.