Cited by 92Neuroendocrine regulation and behaviorAnimal Behavior and ReproductionPrimate Behavior and Ecology

Telencephalic binding sites for oxytocin and social organization: A comparative study of eusocial naked mole‐rats and solitary cape mole‐rats

Kalamatianos, Theodosis, Faulkes, Christopher G., Oosthuizen, Maria K., Poorun, Ravi, Bennett, Nigel C., Coen, Clive W.·2010·Journal of Comparative Neurology

Abstract

African mole‐rats provide a unique taxonomic group for investigating the evolution and neurobiology of sociality. The two species investigated here display extreme differences in social organization and reproductive strategy. Naked mole‐rats (NMRs) live in colonies, dominated by a queen and her consorts; most members remain nonreproductive throughout life but cooperate in burrowing, foraging, and caring for pups, for which they are not biological parents (alloparenting). In contrast, Cape mole‐rats (CMRs) are solitary and intolerant of conspecifics, except during fleeting seasonal copulation or minimal maternal behavior. Research on other mammals suggests that oxytocin receptors at various telencephalic sites regulate social recognition, monogamous pair bonding, and maternal/allomaternal behavior. Current paradigms in this field derive from monogamous and polygamous species of New World voles, which are evolutionarily remote from Old World mole‐rats. The present findings indicate that NMRs exhibit a considerably greater level of oxytocin receptor (OTR) binding than CMRs in the: nucleus accumbens; indusium griseum; central, medial, and cortical amygdaloid nuclei; bed nucleus of the stria terminalis; and CA1 hippocampal subfield. In contrast, OTR binding in the piriform cortex is intense in CMRs but undetectable in NMRs. We speculate that the abundance of OTR binding and oxytocin‐neurophysin‐immunoreactive processes in the nucleus accumbens of NMRs reflects their sociality, alloparenting behavior, and potential for reproductive attachments. In contrast, the paucity of oxytocin and its receptors at this site in CMRs may reflect a paucity of prosocial behaviors. Whether similarities in OTR expression between eusocial mole‐rats and monogamous voles are due to gene conservation or convergent evolution remains to be determined. J. Comp. Neurol. 518:1792–1813, 2010. © 2009 Wiley‐Liss, Inc.

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Crossref · 10.1002/cne.22302

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  • In other communal mammals, such as the eusocial naked mole rate, the same association between higher levels of oxytocin receptor density and alloparenting behavior has been observed.

    “In other communal mammals, such as the eusocial naked mole rate, the same association between higher levels of oxytocin receptor density and alloparenting behavior has been observed (Kalamatianos et al., 2010).”

    From The evolved nest, oxytocin functioning, and prosocial development (2023) · cites this paper as Kalamatianos et al. (2010)

  • Social rodents such as prairie voles and naked mole rats show greater oxytocin receptor density in reward brain regions such as the nucleus accumbens compared with nonsocial meadow voles and cape mole rats.

    “For instance, social rodents such as prairie voles and naked mole rats show a greater density of OTR in reward brain regions (such as the nucleus accumbens (NAcc)), compared to nonsocial meadow voles (during summer season) and cape mole rats (Kalamatianos et al. 2010).”

    From A precision medicine approach to oxytocin trials (2017) · cites this paper as Kalamatianos et al. 2010

  • The difference in sociality between and within animal species is in part explained by a substantial difference in oxytocin receptor density and distribution within the social brain network.

    “It has been shown that the difference in sociality between and within animal species is in part explained by a substantial difference in OTR density and distribution within the social brain network.”

    From A precision medicine approach to oxytocin trials (2017) · cites this paper as Kalamatianos et al. 2010

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Authors
Kalamatianos, T., Faulkes, C. G., Oosthuizen, M. K., Poorun, R., Bennett, N. C., & Coen, C. W.
Affiliations
  • Queen Mary University of London (GB)
  • King's College London (GB)
  • University of Pretoria (ZA)
Corresponding author
Coen, Clive W.
Venue
Journal of Comparative Neurology
Publisher
Wiley
Published
2010-03-18
Volume
518
Issue
10
Pages
1792-1813
ISSN
  • 0021-9967 (ISSN-L)
  • 1096-9861
OpenAlex
W2116027447
Cited by
92
References
114
Citations by year
2026: 3 · 2025: 5 · 2024: 3 · 2023: 4 · 2022: 3 · 2021: 10 · 2020: 17 · 2019: 6 · 2018: 4 · 2017: 4 · 2016: 6 · 2015: 5 · 2014: 5 · 2013: 9 · 2012: 3
FWCI
3.47
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Comparative Neurology (publishedVersion)
  • PubMed (publishedVersion)
  • Research Portal (King's College London) (submittedVersion)
Funders
  • Queen Mary University of London
  • British Society for Neuroendocrinology
  • Biotechnology and Biological Sciences Research Council (BB/D523186/1)
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Animal Behavior and Reproduction
  • Social Sciences › Psychology › Social Psychology › Primate Behavior and Ecology
Keywords
naked mole-rat, social organization, eusociality, alloparenting, nucleus accumbens, amygdala, bed nucleus of the stria terminalis, piriform cortex, neurophysin, social recognition, convergent evolution, evolution of sociality
MeSH terms
Animals, Behavior, Animal, Binding Sites, Female, Male, Oxytocin, Social Behavior, Telencephalon, Receptors, Oxytocin, Mole Rats

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