Cited by 16Neuroendocrine regulation and behaviorPrimate Behavior and EcologyAnimal Behavior and Reproduction

Oxytocin receptor gene sequences in owl monkeys and other primates show remarkable interspecific regulatory and protein coding variation

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Babb, Paul L., Fernandez-Duque, Eduardo, Schurr, Theodore G.·2015·Molecular Phylogenetics and Evolution

Abstract

The oxytocin (OT) hormone pathway is involved in numerous physiological processes, and one of its receptor genes (OXTR) has been implicated in pair bonding behavior in mammalian lineages. This observation is important for understanding social monogamy in primates, which occurs in only a small subset of taxa, including Azara's owl monkey (Aotus azarae). To examine the potential relationship between social monogamy and OXTR variation, we sequenced its 5' regulatory (4936bp) and coding (1167bp) regions in 25 owl monkeys from the Argentinean Gran Chaco, and examined OXTR sequences from 1092 humans from the 1000 Genomes Project. We also assessed interspecific variation of OXTR in 25 primate and rodent species that represent a set of phylogenetically and behaviorally disparate taxa. Our analysis revealed substantial variation in the putative 5' regulatory region of OXTR, with marked structural differences across primate taxa, particularly for humans and chimpanzees, which exhibited unique patterns of large motifs of dinucleotide A+T repeats upstream of the OXTR 5' UTR. In addition, we observed a large number of amino acid substitutions in the OXTR CDS region among New World primate taxa that distinguish them from Old World primates. Furthermore, primate taxa traditionally defined as socially monogamous (e.g., gibbons, owl monkeys, titi monkeys, and saki monkeys) all exhibited different amino acid motifs for their respective OXTR protein coding sequences. These findings support the notion that monogamy has evolved independently in Old World and New World primates, and that it has done so through different molecular mechanisms, not exclusively through the oxytocin pathway.

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Authors
Babb, P. L., Fernandez-Duque, E., & Schurr, T. G.
Affiliations
University of Pennsylvania (US)
Corresponding author
Schurr, Theodore G.
Venue
Molecular Phylogenetics and Evolution
Publisher
Elsevier BV
Published
2015-10
Volume
91
Pages
160-177
ISSN
1055-7903 (ISSN-L)
OpenAlex
W406767003
Cited by
16
References
104
Citations by year
2024: 3 · 2023: 1 · 2021: 2 · 2020: 1 · 2019: 1 · 2017: 2 · 2016: 5 · 2015: 1
FWCI
4.37
Type
journal article
Language
en
Open access
Locations
  • Molecular Phylogenetics and Evolution (acceptedVersion)
  • PubMed (publishedVersion)
  • Conicet (submittedVersion, cc-by-nc-sa)
Funders
  • GAPSA-Provost Award for Interdisciplinary Innovation
  • L.S.B. Leakey Foundation (BCS-0621020)
  • University Research Fund
  • National Science Foundation
  • National Geographic Society
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Social Sciences › Psychology › Social Psychology › Primate Behavior and Ecology
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Animal Behavior and Reproduction
Keywords
oxytocin receptor, owl monkey, Aotus azarae, social monogamy, pair bonding, 5' regulatory region, 5' untranslated region, amino acid substitutions, primate evolution, New World primates, Old World primates, titi monkeys, gibbons
MeSH terms
Animals, Humans, Mutation, Phylogeny, Primates, Proteins, Regulatory Sequences, Nucleic Acid, Genetic Variation, Aotidae, Sequence Analysis, DNA, Receptors, Oxytocin, Evolution, Molecular, Amino Acid Substitution, Mice, Rats

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