Cited by 30Sexual Differentiation and DisordersNeuroendocrine regulation and behaviorGenetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities

Sexual differentiation in prairie voles: the effects of corticosterone and testosterone

Roberts, R.Lucille, Zullo, Amy S, Carter, C.Sue·1997·Physiology & Behavior

Abstract

Prairie voles (Microtus ochrogaster) exhibit low levels of physical sexual dimorphism and have endogenous basal corticosterone levels that are 5-10 times higher than those measured in rats; prairie voles also do not show a postnatal period of adrenal hyporesponsivity. On the basis of studies in rats suggesting that adrenal hyperactivity during the perinatal period could reduce masculinization or feminize sexual behavior, we hypothesized that adrenal hormones might influence sexual differentiation in prairie voles. We also examined the hypothesis that the effects of testosterone in prairie voles might differ from those reported in other rodents. Treatments with either corticosterone or testosterone propionate (TP) were given prenatally (gestational Days 12-20), via maternal injection, or postnatally (Days 1-6), by directly injecting the pups. Additional groups of males were castrated or sham-operated on postnatal Day 1, and a subgroup of castrated males received postnatal TP. Male and female sexual behavior was observed in adulthood following gonadectomy and hormone treatments. Corticosterone treatment was associated with high levels of mounting in both sexes and did not inhibit lordosis behavior in females. Postnatal TP treatment inhibited lordosis in females but did not facilitate mounting in either sex. Males that were castrated at birth showed unexpectedly high levels of mounting in response to adult androgens. The results of this study suggest that in prairie voles cortic…

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Crossref · 10.1016/s0031-9384(97)00365-x

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  • Neonatal manipulation of estradiol or testosterone alters prairie vole affiliative behaviors later in life, and estradiol administration during adulthood alters estrus and locomotor activity.

    “Similarly, neonatal manipulation of estradiol or testosterone alters prairie vole affiliative behaviors later in life, and estradiol administration during adulthood alters estrus and locomotor activity (57, 128, 129).”

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Authors
Roberts, R. L., Zullo, A. S., & Carter, C. S.
Affiliations
University of Maryland, College Park (US)
Corresponding author
Roberts, R.Lucille
Venue
Physiology & Behavior
Publisher
Elsevier BV
Published
1997-12
Volume
62
Issue
6
Pages
1379-1383
ISSN
0031-9384 (ISSN-L)
OpenAlex
W2073316702
Cited by
30
References
23
Citations by year
2023: 2 · 2021: 1 · 2017: 1 · 2016: 2 · 2014: 2 · 2012: 1
FWCI
0.83
Type
journal article
Language
en
Open access
closed
Locations
  • Physiology & Behavior (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation
  • National Institutes of Health (5k05mh001050-03, 5r01mh045836-03, 5r01hd032675-06)
  • National Institute of Mental Health (MH01050, MH 45836)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD32675)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sexual Differentiation and Disorders
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
Keywords
Microtus ochrogaster, sexual differentiation, corticosterone, testosterone propionate, masculinization, lordosis, mounting behavior, prenatal hormone exposure, castration, sexual behavior, gonadectomy
MeSH terms
Animals, Corticosterone, Arvicolinae, Female, Male, Orchiectomy, Posture, Pregnancy, Sexual Behavior, Animal, Sex Differentiation, Testosterone

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