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Olfactory preference for mother over home nest shavings by newborn rats.
Dev Psychobiol. 1998 Jul; 33(1):5-20.DP

Abstract

The developmental course and behavioral processes by which infant rats come to prefer one of two prominent natural odors within their rearing environment, those of their mother and home nest shavings, was studied. Pups as young as 4-5 days and as old as 9-10 days prefer their mother's odor that of their home nest shavings in a two-choice test chamber; pups deprived overnight prior to testing express that preference more strongly than nondeprived littermates when the mother is awake, but not when anesthetized. Encountering maternal and shavings odors in a two-choice paradigm engages a behavioral sequence that progresses from arousal and active sampling of both odors during the establishment of preference to increased mouthing after the choice has been made. A .5 degrees C thermal gradient augments the maternal preference response from 4-5 days of age on, and is necessary to it in 2-day-olds. One-day-old pups do not express a preference for their mothers in our test apparatus on the basis of odor even with the addition of a .5 degrees C thermal gradient, suggesting that preference for the odor of mother over home shavings may be acquired between 1 and 2 days of age.

Authors+Show Affiliations

Department of Psychiatry, Cornell University Medical College, New York, New York 10021, USA.No affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

9664168

Citation

Polan, H J., and M A. Hofer. "Olfactory Preference for Mother Over Home Nest Shavings By Newborn Rats." Developmental Psychobiology, vol. 33, no. 1, 1998, pp. 5-20.
Polan HJ, Hofer MA. Olfactory preference for mother over home nest shavings by newborn rats. Dev Psychobiol. 1998;33(1):5-20.
Polan, H. J., & Hofer, M. A. (1998). Olfactory preference for mother over home nest shavings by newborn rats. Developmental Psychobiology, 33(1), 5-20.
Polan HJ, Hofer MA. Olfactory Preference for Mother Over Home Nest Shavings By Newborn Rats. Dev Psychobiol. 1998;33(1):5-20. PubMed PMID: 9664168.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Olfactory preference for mother over home nest shavings by newborn rats. AU - Polan,H J, AU - Hofer,M A, PY - 1998/7/17/pubmed PY - 2000/6/20/medline PY - 1998/7/17/entrez SP - 5 EP - 20 JF - Developmental psychobiology JO - Dev Psychobiol VL - 33 IS - 1 N2 - The developmental course and behavioral processes by which infant rats come to prefer one of two prominent natural odors within their rearing environment, those of their mother and home nest shavings, was studied. Pups as young as 4-5 days and as old as 9-10 days prefer their mother's odor that of their home nest shavings in a two-choice test chamber; pups deprived overnight prior to testing express that preference more strongly than nondeprived littermates when the mother is awake, but not when anesthetized. Encountering maternal and shavings odors in a two-choice paradigm engages a behavioral sequence that progresses from arousal and active sampling of both odors during the establishment of preference to increased mouthing after the choice has been made. A .5 degrees C thermal gradient augments the maternal preference response from 4-5 days of age on, and is necessary to it in 2-day-olds. One-day-old pups do not express a preference for their mothers in our test apparatus on the basis of odor even with the addition of a .5 degrees C thermal gradient, suggesting that preference for the odor of mother over home shavings may be acquired between 1 and 2 days of age. SN - 0012-1630 UR - https://www.unboundmedicine.com/medline/citation/9664168/Olfactory_preference_for_mother_over_home_nest_shavings_by_newborn_rats_ DB - PRIME DP - Unbound Medicine ER -