Cited by 144Neuroendocrine regulation and behaviorOlfactory and Sensory Function StudiesAnimal Behavior and Reproduction

Oxytocin and vasopressin receptor distributions in a solitary and a social species of tuco‐tuco ( Ctenomys haigi and Ctenomys sociabilis )

Beery, Annaliese K., Lacey, Eileen A., Francis, Darlene D.·2008·Journal of Comparative Neurology

Abstract

The neuropeptides oxytocin and vasopressin and their receptors have been implicated in elements of mammalian social behavior such as attachment to mates and offspring, but their potential role in mediating other types of social relationships remains largely unknown. We performed receptor autoradiography to assess whether forebrain oxytocin receptor (OTR) or vasopressin V1a receptor (V1aR) distributions differed with social structure in two closely related and ecologically similar species of South American rodents, the colonial tuco‐tuco ( Ctenomys sociabilis ) and the Patagonian tuco‐tuco ( Ctenomys haigi ). Long‐term field studies have revealed that C. haigi is solitary, whereas C. sociabilis is social and provides a model of female‐based group living. Our analyses revealed marked differences in OTR and V1aR distributions between these species. For example, only C. sociabilis had OTR binding in the piriform cortex and thalamus and V1aR binding in the olfactory bulbs. In contrast, C. haigi exhibited dramatically higher levels of OTR binding throughout the lateral septum and hippocampus. More generally, the group‐living C. sociabilis exhibited a pattern of nucleus accumbens OTR and ventral pallidum V1aR binding different from that associated with the formation of opposite‐sex pair bonds in microtine rodents. Higher binding in the central nucleus of the amygdala of C. sociabilis was consistent with the hypothesis that formation of social groups in C. sociabilis may be facilitated by reduced social anxiety. Low OTR binding in the lateral septum might also be a permissive factor for group living in C. sociabilis . Future studies will expand on these analyses to explore interspecific differences in ctenomyid receptor binding patterns in a phylogenetic context. J. Comp. Neurol. 507:1847–1859, 2008. © 2008 Wiley‐Liss, Inc.

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Crossref · 10.1002/cne.21638

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  • OTR binding density in the lateral septum was lower in group-living as opposed to solitary tuco-tucos.

    “and was lower in group-living as opposed to solitary tuco-tucos (Beery et al., 2008).”
  • Rodent species with known oxytocin receptor and vasopressin receptor 1a distributions include laboratory mice and rats, hamsters, guinea pigs, California mice, deer mice, tuco-tucos, singing mice, naked mole-rats, Cape mole-rats, prairie and pine voles, and montane and meadow voles.

    “To our knowledge, rodent species with known OXTR and AVPR1a distributions include laboratory mice and rats, hamsters, guinea pigs, the socially monogamous California mouse and the promiscuous deer mouse, a social and a solitary species of tuco-tuco, two species of Central American singing mice, the eusocial naked mole-rat and the solitary Cape mole-rat, and the socially monogamous prairie and pine”
  • These findings were surprising given typically pro-social effects of OT, although recent studies suggest a role for the OTR in the LS in reducing pro-social behaviors and enhancing anxiety in rodents.

    “These findings were a bit surprising, given the typically pro-social behavior effects of OT, although recent studies suggest a role for the OTR in the LS in reducing pro-social behaviors and enhancing anxiety in rodents”
  • Other rodent studies that did not find sex differences in OTR binding analyzed only a few brain regions.

    “other rodent studies that did not find sex differences in OTR binding analyzed only a few brain regions”
  • Among rodents, there is pronounced interspecific variation in OTR and V1aR binding in the central nervous system that reflects differential social organization and mating strategies.

    “Among rodents, there is pronounced interspecific variation in OTR and V1aR binding in the central nervous system that reflects differential social organization and mating strategies (Barrett et al., 2013; Beery et al., 2008; Insel and Shapiro, 1992; Mooney et al., 2015; Ophir et al., 2012; Young et al., 2011).”

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Authors
Beery, A. K., Lacey, E. A., & Francis, D. D.
Affiliations
  • University of California, Berkeley (US)
  • Museum of Vertebrate Zoology (US)
Corresponding author
Beery, Annaliese K.
Venue
Journal of Comparative Neurology
Publisher
Wiley
Published
2008-02-12
Volume
507
Issue
6
Pages
1847-1859
ISSN
  • 0021-9967 (ISSN-L)
  • 1096-9861
OpenAlex
W1987667709
Cited by
144
References
69
Citations by year
2026: 7 · 2025: 8 · 2024: 6 · 2023: 2 · 2022: 2 · 2021: 13 · 2020: 3 · 2019: 8 · 2018: 9 · 2017: 4 · 2016: 17 · 2015: 15 · 2014: 13 · 2013: 8 · 2012: 4
FWCI
11.12
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Comparative Neurology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Mental Health (MH 61171, R01MH061171)
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Neuroscience › Sensory Systems › Olfactory and Sensory Function Studies
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Animal Behavior and Reproduction
Keywords
oxytocin receptor, vasopressin V1a receptor, Ctenomys sociabilis, tuco-tuco, social behavior, group living, lateral septum, hippocampus, nucleus accumbens, ventral pallidum, central amygdala, social anxiety, neuropeptides
MeSH terms
Adaptation, Physiological, Animals, Autoradiography, Basal Ganglia, Behavior, Animal, Brain, Female, Ligands, Male, Nucleus Accumbens, Olfactory Bulb, Oxytocin, Phylogeny, Rodentia, Sexual Behavior, Animal, Sex Characteristics, Social Behavior, Vasopressins, Receptors, Vasopressin, Receptors, Oxytocin

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