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Stress-effects in Microcebus murinus

M Perret

    Folia Primatologica; International Journal of Primatology
    |January 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    Captive lesser mouse lemurs (Microcebus murinus) exhibit premature aging and death due to a stress-induced syndrome, primarily affecting the kidneys. This condition, linked to hormonal imbalances, significantly shortens their lifespan compared to their natural potential.

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    Area of Science:

    • Veterinary Pathology
    • Primatology
    • Endocrinology

    Background:

    • Lesser mouse lemurs (Microcebus murinus) are small primates often used in biomedical research.
    • Spontaneous deaths in captive populations highlight potential health issues in managed environments.
    • Understanding age-related pathologies is crucial for improving animal welfare and research validity.

    Purpose of the Study:

    • To investigate the primary causes of mortality in a captive population of lesser mouse lemurs.
    • To identify key pathological lesions and associated endocrine and reproductive disorders.
    • To determine if captive conditions contribute to premature aging and death.

    Main Methods:

    • Histological examination of 164 spontaneously deceased lesser mouse lemurs over a 10-year period.

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  • Analysis of principal lesions including nephrosis, nephritis, myocardial necrosis, and pneumonia.
  • Correspondence analysis to correlate pathologies with endocrine (thyroid, adrenal) and reproductive status.

    • Main Results:

    • Chronic nephrosis/nephritis (90%), myocardial necrosis, interstitial pneumonia, and liver/spleen/gastric lesions were prevalent.
    • Associated conditions included hypothyroidism, hypercorticism, adrenal hyperactivity, testicular atrophy, and female reproductive disorders.
    • Correspondence analysis indicated a common syndrome leading to renal insufficiency and death, distinct from cancer or parasitism.

    Conclusions:

    • Captive lesser mouse lemurs suffer from a premature aging syndrome leading to renal failure and death, significantly reducing their lifespan.
    • Pathologies are linked to hormonal imbalances, specifically hypercorticism and adrenal hyperactivity, likely induced by captivity-related stress, particularly social stress.
    • These findings suggest that captive environments may induce a stress response that accelerates aging and mortality in this species.