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Related Experiment Videos

Nest temperature: effects on maternal behavior, pup development, and interactions with handling.

J E Jans1, B C Woodside

  • 1Psychology Department, Concordia University, Montreal, Quebec, Canada.

Developmental Psychobiology
|September 1, 1990
PubMed
Summary

Maternal contact and thermal environments impact pup development. Warm surfaces reduce mother-pup contact, affecting pup adrenal glands, but handling stress is a key factor in adrenal development.

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Area of Science:

  • Animal behavior
  • Developmental biology
  • Environmental physiology

Background:

  • Mother-young contact is crucial for offspring development.
  • Thermal environments can influence maternal care and offspring outcomes.
  • Handling stress is a known factor affecting adrenal gland development in pups.

Purpose of the Study:

  • To investigate how thermal environments alter mother-young contact patterns.
  • To assess the impact of these altered contact patterns on pup development.
  • To determine the role of handling stress in pup development under different thermal conditions.

Main Methods:

  • Experiments were conducted comparing mother-young interactions in different thermal environments.
  • Pup development was monitored, including adrenal gland size, body temperature, and thermoregulatory ability.

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  • Handling of pups was manipulated across experimental conditions.

    • Main Results:

    • A warm surface reduced maternal contact time and dam food intake, leading to smaller pup adrenal glands.
    • Eliminating pup handling in a warm environment negated developmental differences.
    • Resumed handling in a warm environment resulted in smaller adrenal glands, lower body temperature, and reduced thermoregulation in pups.
    • Handling appeared to increase adrenal gland weight in pups under normal conditions but not under warm-rearing conditions.

    Conclusions:

    • Thermal environments significantly alter maternal behavior and pup development.
    • Handling stress plays a critical role in pup adrenal development, particularly when combined with thermal challenges.
    • The interplay between environmental temperature and handling stress has implications for understanding offspring development and stress responses.