Neuroscience
California National Primate Research Center, UC-Davis, Davis, CA 95616, United States; Department of Psychology, UC-Davis, Davis, CA 95616, United States. Electronic address:
Published: April 2017
Social bonds, especially attachment relationships, are crucial to our health and happiness. However, what we know about the neural substrates of these bonds is almost exclusively limited to rodent models and correlational experiments in humans. Here, we used socially monogamous non-human primates, titi monkeys (Callicebus cupreus) to experimentally examine changes in regional and global cerebral glucose metabolism (GCGM) during the formation and maintenance of pair bonds. Baseline positron emission tomography (PET) scans were taken of thirteen unpaired male titi monkeys. Seven males were then experimentally paired with females, scanned and compared, after one week, to six age-matched control males. Five of the six control males were then also paired and scanned after one week. Scans were repeated on all males after four months of pairing. PET scans were coregistered with structural magnetic resonance imaging (MRI), and region of interest (ROI) analysis was carried out. A primary finding was that paired males showed a significant increase in [F]-fluorodeoxyglucose (FDG) uptake in whole brain following one week of pairing, which is maintained out to four months. Dopaminergic, "motivational" areas and those involved in social behavior showed the greatest change in glucose uptake. In contrast, control areas changed only marginally more than GCGM. These findings confirm the large effects of social bonds on GCGM. They also suggest that more studies should examine how social manipulations affect whole-brain FDG uptake, as opposed to assuming that it does not change across condition.
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http://dx.doi.org/10.1016/j.neuroscience.2017.02.028 | DOI Listing |
Primates
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Wildlife Conservation Society, Edificio Torre Soleil, #987 Calle Jaime Mendoza, San Miguel, La Paz, Bolivia.
Knowledge about changes in wildlife populations over time is essential for making informed decisions regarding their conservation. We evaluated the influence of distinct habitat factors on the occupancy of Olalla's titi monkey (Plecturocebus olallae), a Critically Endangered primate endemic to Bolivia. We assessed the presence of titi monkey groups using the playback technique, employing point counts in 582 quadrants of approximately 6.
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NYCEP Morphometrics Group, USA; Center for Functional Anatomy and Evolution, Johns Hopkins University School of Medicine, 1830 East Monument St, 3rd Floor, Baltimore, MD 21287, USA.
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2015Wildlife Conservation Society, Jaime Mendoza St. 987, Calacoto - San Miguel, La Paz, Bolivia.
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Behavioral Ecology and Sociobiology Unit, German Primate Center -Leibniz-Institute for Primate Research, 37077 Göttingen, Germany.
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August 2023
Animal Behavior Graduate Group, University of California, Davis, One Shields Avenue, Davis, CA, 95616.
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