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  Variation in oxytocin is related to variation in affiliative behavior in monogamous, pairbonded tamarins

Snowdon, C. T., Pieper, B. A., Boe, C. Y., Cronin, K. A., Kurian, A. V., & Ziegler, T. E. (2010). Variation in oxytocin is related to variation in affiliative behavior in monogamous, pairbonded tamarins. Hormones and Behavior, 58(4), 614-618. doi:10.1016/j.yhbeh.2010.06.014.

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Snowdon_2010_Variation in oxytocin is related to variation.pdf (Publisher version), 290KB
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 Creators:
Snowdon, Charles T.1, Author
Pieper, Bridget A.1, Author
Boe, Carla Y.1, Author
Cronin, Katherine A.1, Author           
Kurian, Aimee V.1, Author
Ziegler, Toni E.1, Author
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1University of Wisconsin - Madison, 1202 West Johnson, Madison, WI 53706, ou_persistent22              

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Free keywords: oxytocin, affiliative behavior, cotton-top tamarins, monogamy, cooperative breeding, sex differences
 Abstract: Oxytocin plays an important role in monogamous pairbonded female voles, but not in polygamous voles. Here we examined a socially monogamous cooperatively breeding primate where both sexes share in parental care and territory defense for within species variation in behavior and female and male oxytocin levels in 14 pairs of cotton-top tamarins (Saguinus oedipus). In order to obtain a stable chronic assessment of hormones and behavior, we observed behavior and collected urinary hormonal samples across the tamarins’ 3-week ovulatory cycle. We found similar levels of urinary oxytocin in both sexes. However, basal urinary oxytocin levels varied 10-fold across pairs and pair-mates displayed similar oxytocin levels. Affiliative behavior (contact, grooming, sex) also varied greatly across the sample and explained more than half the variance in pair oxytocin levels. The variables accounting for variation in oxytocin levels differed by sex. Mutual contact and grooming explained most of the variance in female oxytocin levels, whereas sexual behavior explained most of the variance in male oxytocin levels. The initiation of contact by males and solicitation of sex by females were related to increased levels of oxytocin in both. This study demonstrates within-species variation in oxytocin that is directly related to levels of affiliative and sexual behavior. However, different behavioral mechanisms influence oxytocin levels in males and females and a strong pair relationship (as indexed by high levels of oxytocin) may require the activation of appropriate mechanisms for both sexes.

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Language(s): eng - English
 Dates: 2010-03-292010-06-232010-06-282010-09
 Publication Status: Issued
 Pages: -
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 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.yhbeh.2010.06.014
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Title: Hormones and Behavior
Source Genre: Journal
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Pages: - Volume / Issue: 58 (4) Sequence Number: - Start / End Page: 614 - 618 Identifier: Other: 954922645022
Other: 0018-506X
CoNE: https://pure.mpg.de/cone/journals/resource/954922645022