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Witczak LR, Samra J, Dufek M, Goetze LR, Freeman SM, Lau AR, Rothwell ES, Savidge LE, Arias-Del Razo R, Baxter A, Karaskiewicz CL, Ferrer E, Bales KL. Expression of bond-related behaviors affects titi monkey responsiveness to oxytocin and vasopressin treatments. Ann N Y Acad Sci 2024; 1534:118-129. [PMID: 38442081 DOI: 10.1111/nyas.15119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
Social bonds influence physiology and behavior, which can shape how individuals respond to physical and affective challenges. Coppery titi monkey (Plecturocebus cupreus) offspring form selective bonds with their fathers, making them ideal for investigating how father-daughter bonds influence juveniles' responses to oxytocin (OT) and arginine-vasopressin (AVP) manipulations. We quantified the expression of father-daughter bond-related behaviors in females (n = 10) and gave acute intranasal treatments of saline, low/medium/high OT, low/high AVP, or an OT receptor antagonist (OTA) to subjects prior to a parent preference test. While females spent more time in proximity to their parents than strangers, we found a large degree of individual variation. Females with greater expression of bonding behaviors responded to OT treatments in a dose-dependent manner. Subjects also spent less time in proximity to strangers when treated with High OT (p = 0.003) and Low OT (p = 0.007), but more time when treated with High AVP (p = 0.007), Low AVP (p = 0.009), and OTA (p = 0.001). Findings from the present study suggest that variation in the expression of bond-related behaviors may alter responsiveness to OT and AVP, increasing engagement with unfamiliar social others. This enhanced sociality with strangers may promote the formation of pair bonds with partners.
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Affiliation(s)
- Lynea R Witczak
- Department of Psychology, University of California, Davis, Davis, California, USA
- California National Primate Research Center, University of California, Davis, Davis, California, USA
| | - Jaclyn Samra
- Department of Psychology, University of California, Davis, Davis, California, USA
| | - Madison Dufek
- California National Primate Research Center, University of California, Davis, Davis, California, USA
| | - Leana R Goetze
- California National Primate Research Center, University of California, Davis, Davis, California, USA
| | - Sara M Freeman
- California National Primate Research Center, University of California, Davis, Davis, California, USA
- Department of Biology, Utah State University, Logan, Utah, USA
| | - Allison R Lau
- California National Primate Research Center, University of California, Davis, Davis, California, USA
- Animal Behavior Graduate Group, University of California, Davis, Davis, California, USA
| | - Emily S Rothwell
- California National Primate Research Center, University of California, Davis, Davis, California, USA
- Animal Behavior Graduate Group, University of California, Davis, Davis, California, USA
| | - Logan E Savidge
- Department of Psychology, University of California, Davis, Davis, California, USA
- California National Primate Research Center, University of California, Davis, Davis, California, USA
| | - Rocío Arias-Del Razo
- Department of Psychology, University of California, Davis, Davis, California, USA
- California National Primate Research Center, University of California, Davis, Davis, California, USA
| | - Alexander Baxter
- Department of Psychology, University of California, Davis, Davis, California, USA
- California National Primate Research Center, University of California, Davis, Davis, California, USA
| | - Chloe L Karaskiewicz
- Department of Psychology, University of California, Davis, Davis, California, USA
- California National Primate Research Center, University of California, Davis, Davis, California, USA
| | - Emilio Ferrer
- Department of Psychology, University of California, Davis, Davis, California, USA
| | - Karen L Bales
- Department of Psychology, University of California, Davis, Davis, California, USA
- California National Primate Research Center, University of California, Davis, Davis, California, USA
- Animal Behavior Graduate Group, University of California, Davis, Davis, California, USA
- Department of Neurobiology, Physiology, and Behavior, University of California, Davis, Davis, California, USA
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2
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Gussone L, García de la Chica A, Fernandez-Duque E. Intergroup encounters in pair-living primates: Comparative analysis and a case study of pair-living and monogamous owl monkeys (Aotus azarae) of Argentina. Am J Primatol 2024; 86:e23572. [PMID: 37919869 DOI: 10.1002/ajp.23572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/28/2023] [Accepted: 10/20/2023] [Indexed: 11/04/2023]
Abstract
The function of intergroup encounters (IGEs) may differ substantially among species of different group sizes and social organizations. Research in group-living primates has shown that the behavioral responses during IGEs can vary widely from affiliative to neutral or aggressive interactions; still, little is known about IGEs in pair-living taxa. We conducted a systematic literature review to find relevant studies on the functions of IGEs in pair-living nonhuman primates that could inform analyses of IGE data (n = 242 IGEs, 21 groups and 10 solitary individuals, 1997-2020) from wild owl monkeys, a pair-living, monogamous primate with extensive biparental care. We identified 1315 studies published between 1965 and 2021; only 13 of them (n = 10 species) contained raw data on the number of IGEs. Our review of those studies showed that IGEs are common, but highly variable in their nature and characteristics in pair-living primates. To examine the non-mutually exclusive hypotheses of resource-, and mate defense, and infanticide avoidance we analyzed data from the Owl Monkey Project 27-year long database to build first an a priori model set. To incorporate prior knowledge from the literature review, we conducted our analyses as a consecutive series of binomial logistic regressions. All IGEs including all biologically relevant parameters (N = 156) were codified into three different behavioral categories (Reaction, Agonism, and Physical Aggression). The analysis showed that owl monkeys regularly engaged in IGEs, most of which were agonistic. They showed more reaction when infants were present, but reactions were less physically aggressive when infants and pregnant females were involved. Overall, our results lend more support for the infant and mate defense hypotheses than they do for the resource defense one.
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Affiliation(s)
- Leonie Gussone
- Institute for Evolutionary Biology and Ecology, Bonn University, Bonn, Germany
- Department of Anthropology, University of Minnesota, Twin-Cities, Minnesota, USA
| | - Alba García de la Chica
- Instituto de Ecología, Genética y Evolución, Universidad de Buenos Aires, Buenos Aires, Argentina
- Owl Monkey Project-Fundación ECO, Formosa, Argentina
| | - Eduardo Fernandez-Duque
- Owl Monkey Project-Fundación ECO, Formosa, Argentina
- Department of Anthropology and School of the Environment, Yale University, New Haven, Connecticut, USA
- Facultad de Recursos Naturales, Universidad Nacional de Formosa, Formosa, Argentina
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3
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Karaskiewicz CL, Ramirez M, Bales KL. Physiological and behavioral effects of hormonal contraceptive treatment in captive, pair-bonded primates ( Plecturocebus cupreus). JOURNAL OF THE AMERICAN ASSOCIATION FOR LABORATORY ANIMAL SCIENCE : JAALAS 2023; 62:494-501. [PMID: 37973152 PMCID: PMC10772904 DOI: 10.30802/aalas-jaalas-23-000017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/15/2023] [Accepted: 08/13/2023] [Indexed: 11/19/2023]
Abstract
Hormonal contraception is an effective, reversible tool for managing birth rates in humans and nonhuman animals alike. However, manipulating reproductive hormones has behavioral consequences that can impact social and sexual behavior between conspecifics. First, we studied 18 pairs of nonreproductive titi monkeys (Plecturocebus cupreus) to test the efficacy of a novel method of hormonal contraception (deslorelin acetate implants) on reproductive hormone cycling in females and found significant reductions in urinary estrogens and progestagens among treated females compared to untreated controls. We then studied 35 nonreproductive pairs of coppery titi monkeys (Plecturocebus cupreus) to ascertain whether treating females with one of 2 different forms of hormonal contraception (deslorelin acetate implants (n = 17) or medroxyprogesterone acetate injections (n = 9)) would influence the relationship between pair mates compared to the relationship between untreated females and their vasectomized male mates (n = 9). Over a 5-month period, we found no differences in affiliative behaviors between pairs containing untreated females compared to pairs in which the female was treated with either deslorelin acetate or medroxyprogesterone acetate. Similarly, we found no differences in affiliation between pairs in the 2 treatment groups. This study is the first to examine behavioral consequences of hormonal contraception in a pair-bonding species. The results are encouraging for captive, managed breeding colonies of such social animals, especially those used in behavioral research.
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Affiliation(s)
- Chloe L Karaskiewicz
- Department of Psychology, University of California Davis, Davis, California
- California National Primate Research Center, Davis, California; and
| | - Melissa Ramirez
- California National Primate Research Center, Davis, California; and
| | - Karen L Bales
- Department of Psychology, University of California Davis, Davis, California
- California National Primate Research Center, Davis, California; and
- Department of Neurobiology, Physiology, and Behavior, University of California Davis, Davis, California
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4
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Zablocki-Thomas P, Lau A, Witczak L, Dufek M, Wright A, Savidge L, Paulus J, Baxter A, Karaskiewicz C, Seelke AMH, Freeman SM, Ferrer E, Bales KL. Intranasal oxytocin does not change partner preference in female titi monkeys (Plecturocebus cupreus), but intranasal vasopressin decreases it. J Neuroendocrinol 2023; 35:e13339. [PMID: 37705310 PMCID: PMC10957293 DOI: 10.1111/jne.13339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 08/15/2023] [Accepted: 08/28/2023] [Indexed: 09/15/2023]
Abstract
Strong social bonds are critical to human health; however, the mechanisms by which social bonds are formed and maintained are still being elucidated. The neurohormones oxytocin (OT) and vasopressin (AVP) are considered likely candidates. Primate females, both human and nonhuman, remain understudied populations. Here, we conducted a pharmacological study coupled with a behavioral partner preference test (PPT) to better understand the mechanistic basis of attachment in adult female titi monkeys (Plecturocebus cupreus). This pair-bonding species shares a conserved form of oxytocin with humans and is an excellent model organism to study the neural basis of social bonding. We performed intranasal administration of three doses of oxytocin (IN-OT), two doses of vasopressin (IN-AVP), one dose of an oxytocin antagonist (IN-OTA) and one dose of a saline treatment. We found that compared to the saline control, the IN-AVP treatment (lower dose, 40 IU/kg) decreased the time spent in proximity to the partner and increased lip-smacking toward the stranger. We found no effects of IN-OT or IN-OTA manipulation on partner preference. In contrast, low-dose IN-AVP weakened the partner preference in female titi monkeys.
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Affiliation(s)
| | - Allison Lau
- California National Primate Research Center, Davis, CA
- Graduate Group in Animal Behavior, University of California, Davis, CA
| | - Lynea Witczak
- California National Primate Research Center, Davis, CA
- Department of Psychology, University of California, Davis, CA
| | - Madison Dufek
- California National Primate Research Center, Davis, CA
| | - Amber Wright
- California National Primate Research Center, Davis, CA
| | - Logan Savidge
- California National Primate Research Center, Davis, CA
- Department of Psychology, University of California, Davis, CA
| | - John Paulus
- California National Primate Research Center, Davis, CA
- Graduate Group in Neuroscience, University of California, Davis, CA
| | - Alexander Baxter
- California National Primate Research Center, Davis, CA
- Department of Psychology, University of California, Davis, CA
| | - Chloe Karaskiewicz
- California National Primate Research Center, Davis, CA
- Department of Psychology, University of California, Davis, CA
| | - Adele M. H. Seelke
- Department of Neurobiology, Physiology, and Behavior, University of California, Davis, CA
| | - Sara M. Freeman
- California National Primate Research Center, Davis, CA
- Department of Biology, Utah State University, Logan, UT
| | - Emilio Ferrer
- Department of Neurobiology, Physiology, and Behavior, University of California, Davis, CA
| | - Karen L. Bales
- California National Primate Research Center, Davis, CA
- Department of Psychology, University of California, Davis, CA
- Department of Neurobiology, Physiology, and Behavior, University of California, Davis, CA
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5
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Baxter A, Lau AR, Savidge LE, Bales KL. Initial compatibility during a "Speed-Dating" test predicts postpairing affiliation in titi monkeys (Plecturocebus cupreus). Am J Primatol 2023; 85:e23496. [PMID: 37101314 PMCID: PMC10560403 DOI: 10.1002/ajp.23496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 03/24/2023] [Accepted: 04/13/2023] [Indexed: 04/28/2023]
Abstract
Behavioral compatibility plays a critical role in shaping how potential mates interact with and evaluate each other and whether they choose to pursue a relationship. Compatibility is especially important for mate choice and relationship quality in pair-bonding species that form long-term attachments between mates. Although this process has been studied in humans and birds, relatively few studies have investigated it in non-human primates. In this study, we investigated whether pairing titi monkeys (Plecturocebus cupreus) based on initial compatibility increased postpairing affiliation between mates. Subjects were 12 unpaired adult titi monkeys (two cohorts of three males and three females). We determined each subject's initial interest in each opposite-sex potential mate in their cohort across a series of six 30-min interaction periods (i.e., "speed-dates"). To determine initial compatibility, we used the Social Relations Model to calculate relationship effects in initial interest (how much each subject uniquely preferred each potential mate beyond their own affiliative disposition and their partner's popularity). We then paired monkeys in a way that maximized net relationship effects between pairs, and measured longitudinal pair affiliation (Proximity, Contact, Tail Twining, and Combined Affiliation) for 6 months postpairing using daily scan-sample observations and monthly home-cage video recordings. Multilevel models showed that, on average, the six speed-dating pairs exhibited higher levels of Tail Twining (determined from scan-sample observations; β = 0.31) compared to a group of 13 age-matched colony pairs that were determined quasi-randomly without quantifying compatibility. The degree of initial compatibility within speed-dating pairs also predicted higher levels of Combined Affiliation (determined from video recordings) at earlier post-pairing time points, with the association peaking at 2 months postpairing (β = 0.57). These findings suggest that initial compatibility facilitates pair bonding in titi monkeys. We conclude by discussing how the speed-dating design can be used for colony management to inform pair-housing decisions.
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Affiliation(s)
- Alexander Baxter
- Department of Psychology, University of California, Davis
- California National Primate Research Center
| | - Allison R. Lau
- Department of Psychology, University of California, Davis
- California National Primate Research Center
- Animal Behavior Graduate Group, University of California, Davis
| | - Logan E. Savidge
- Department of Psychology, University of California, Davis
- California National Primate Research Center
| | - Karen L. Bales
- Department of Psychology, University of California, Davis
- California National Primate Research Center
- Department of Neurobiology, Physiology, and Behavior, University of California, Davis
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Yi Y, Mardiastuti A, Choe JC. How to be a good partner and father? The role of adult males in pair bond maintenance and parental care in Javan gibbons. Proc Biol Sci 2023; 290:20230950. [PMID: 37369349 DOI: 10.1098/rspb.2023.0950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 05/31/2023] [Indexed: 06/29/2023] Open
Abstract
In pair-living species, female and male pairs may maintain stable social bonds by adjusting spatial and social associations. Nevertheless, each sex invests differently to maintain the pair bond, and the investment can depend on the presence of paternal care or 'male services.' While most species live in pairs, the sex responsible for pair bond maintenance in gibbons is still controversial. We investigated pair bond maintenance and parental care in three pairs of wild Javan gibbons in Gunung Halimun-Salak National Park, Indonesia, for over 21 months. We found that Javan gibbon fathers groomed their offspring more than adult females, especially as offspring got older. While both parents increased playing time with offspring when offspring became older and more independent, fathers played with offspring 20 times more than mothers on average. Grooming within Javan gibbon pairs was male-biased, suggesting that pair bond maintenance was heavily the job of males. However, offspring age as a proxy for paternal care did not affect the pair bond maintenance. Our study highlights that adult male Javan gibbons may have an important role in pair bond maintenance and the care of juveniles.
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Affiliation(s)
- Yoonjung Yi
- Laboratory of Animal Behaviour and Conservation, College of Biology and the Environment, Nanjing Forestry University, Nanjing, 210037, People's Republic of China
| | - Ani Mardiastuti
- Department of Forest Resources Conservation and Ecotourism, IPB University, Bogor, 16680, Indonesia
| | - Jae C Choe
- Laboratory of Behavioral Ecology, Division of EcoScience, Ewha Womans University, Seoul, 03760, Republic of Korea
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Lau AR, Cunningham AD, Bales KL. Pairing status and stimulus type predict responses to audio playbacks in female titi monkeys. Front Ecol Evol 2023; 11:1145205. [PMID: 38584610 PMCID: PMC10997360 DOI: 10.3389/fevo.2023.1145205] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024] Open
Abstract
Some paired primates use complex, coordinated vocal signals to communicate within and between family groups. The information encoded within those signals is not well understood, nor is the intricacy of individuals' behavioral and physiological responses to these signals. Considering the conspicuous nature of these vocal signals, it is a priority to better understand paired primates' responses to conspecific calls. Pair-bonded titi monkeys (Plecturocebus cupreus) sing duets comprised of the male and female's long call. Here, we use a playback study to assess female titi monkeys' responses to different vocal stimuli based on the subject's pairing status. Six adult female titi monkeys participated in the study at two timepoints--pre-pairing and post-pairing. At each timepoint, subjects underwent three distinct playbacks--control recording, male solo vocalization, and pair duet. Behaviors such as locomotion and vocalizations were scored during and after the playback, and cortisol and androgen values were assessed via a plasma blood sample. Female titi monkeys attended more to social signals compared to the control, regardless of pairing status. However, in the time immediately following any playback type, female titi monkeys trilled more and spent a greater proportion of time locomoting during pre-pairing timepoints (compared to post-pairing). Female titi monkeys' behavioral responses to social audio stimuli, combined with subjects' increases in cortisol and androgens as paired individuals, imply female titi monkeys attend and respond to social signals territorially.
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Affiliation(s)
- Allison R. Lau
- Graduate Group in Animal Behavior, University of California, Davis, One Shields Avenue, Davis, CA, 95616
- California National Primate Research Center, University of California, Davis, Davis, CA, 95616
| | - Ashley D. Cunningham
- Department of Psychology, University of California, Davis, One Shields Avenue, Davis, CA, 95616
| | - Karen L. Bales
- Graduate Group in Animal Behavior, University of California, Davis, One Shields Avenue, Davis, CA, 95616
- California National Primate Research Center, University of California, Davis, Davis, CA, 95616
- Department of Psychology, University of California, Davis, One Shields Avenue, Davis, CA, 95616
- Department of Neurobiology, Physiology, and Behavior, University of California, Davis, One Shields Avenue, Davis, CA 95616
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Witczak LR, Blozis SA, Bales KL. Assessing variability in affiliative maintenance behaviours in captive coppery titi monkeys, Plecturocebus cupreus. Anim Behav 2022. [DOI: 10.1016/j.anbehav.2022.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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9
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Dolotovskaya S, Heymann EW. Coordinated Singing in Coppery Titi Monkeys (Plecturocebus cupreus): Resource or Mate Defense? Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.898509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Coordinated singing, performed as duets by mated pairs and often joined by offspring to form choruses, is a distinctive behavioral attribute of the social system of pair-living and pair-bonded Neotropical titi monkeys. Duets and choruses are presumed to be associated with mate or territorial defense, but no consensus has yet been reached regarding their function. Here, we examined temporal and spatial patterns of coordinated singing in eight wild groups of coppery titi monkeys, Plecturocebus cupreus, in Peruvian Amazonia to test predictions of the joint resource and mate defense. We investigated singing rates in relation to female reproductive state, fruit consumption and demographic context using a dataset based on 227 observation days and analyzed temporal and spatial distribution of songs using a dataset based on 150 songs, collected between June 2017 and September 2021. Titi monkeys sang least frequently when females were likely to be sexually receptive and most frequently when females were likely to be pregnant. Groups also sang slightly more often when fruits were consumed more intensively, although this association did not reach statistical significance. The duration of songs was not associated with female reproductive state or fruit consumption, but songs were longer during inter-group encounters compared to non-encounter contexts. Songs were not concentrated in the core areas of home ranges; rather, they were distributed throughout the home ranges in concordance with its use. Finally, songs were concentrated around dawn. Our results provide support for a function in joint resource defense and inter-group communication of coordinated songs in coppery titi monkeys. The function of coordinated songs for mate defense in the form of paternity guarding, on the other hand, was not supported by our findings.
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Razo RAD, Velasco Vazquez MDL, Turcanu P, Legrand M, Floch M, Weinstein TAR, Goetze LR, Freeman SM, Baxter A, Witczak LR, Sahagún E, Berger T, Jacob S, Lawrence RH, Rothwell ES, Savidge LE, Solomon M, Mendoza SP, Bales KL. Long term effects of chronic intranasal oxytocin on adult pair bonding behavior and brain glucose uptake in titi monkeys (Plecturocebus cupreus). Horm Behav 2022; 140:105126. [PMID: 35123106 PMCID: PMC9250651 DOI: 10.1016/j.yhbeh.2022.105126] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 12/31/2021] [Accepted: 01/23/2022] [Indexed: 01/01/2023]
Abstract
Intranasal oxytocin (IN OXT) administration has been proposed as a pharmacological treatment for a range of biomedical conditions including neurodevelopmental disorders. However, studies evaluating the potential long-lasting effects of chronic IN OXT during development are still scarce. Here we conducted a follow-up study of a cohort of adult titi monkeys that received intranasal oxytocin 0.8 IU/kg (n = 15) or saline (n = 14) daily for six months during their juvenile period (12 to 18 months of age), with the goal of evaluating the potential long-lasting behavioral and neural effects one year post-treatment. Subjects were paired with an opposite-sex mate at 30 months of age (one year post-treatment). We examined pair affiliative behavior in the home cage during the first four months and tested for behavioral components of pair bonding at one week and four months post-pairing. We assessed long-term changes in brain glucose uptake using 18FDG positron emission tomography (PET) scans. Our results showed that OXT-treated animals were more affiliative across a number of measures, including tail twining, compared to SAL treated subjects (tail twining is considered the "highest" type of affiliation in titi monkeys). Neuroimaging showed no treatment differences in glucose uptake between SAL and OXT-treated animals; however, females showed higher glucose uptake in whole brain at 23 months, and in both the whole brain and the social salience network at 33 months of age compared to males. Our results suggest that chronic IN OXT administration during development can have long-term effects on adult social behavior.
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Affiliation(s)
- Rocío Arias-Del Razo
- Department of Psychology, University of California, Davis, CA, United States of America; California National Primate Research Center, Davis, CA, United States of America
| | | | - Petru Turcanu
- Department of Psychology, University of California, Davis, CA, United States of America
| | | | | | - Tamara A R Weinstein
- California National Primate Research Center, Davis, CA, United States of America
| | - Leana R Goetze
- California National Primate Research Center, Davis, CA, United States of America
| | - Sara M Freeman
- California National Primate Research Center, Davis, CA, United States of America; Department of Biology, Utah State University, Logan, UT, United States of America
| | - Alexander Baxter
- Department of Psychology, University of California, Davis, CA, United States of America; California National Primate Research Center, Davis, CA, United States of America
| | - Lynea R Witczak
- Department of Psychology, University of California, Davis, CA, United States of America; California National Primate Research Center, Davis, CA, United States of America
| | - Elizabeth Sahagún
- California National Primate Research Center, Davis, CA, United States of America; Department of Neuroscience, Purdue University, West Lafayette, IN, United States of America
| | - Trish Berger
- Department of Animal Science, University of California, Davis, CA, United States of America
| | - Suma Jacob
- University of Minnesota, Department of Psychiatry Center for Neurobehavioral Development, Minneapolis, MN, United States of America
| | - Rebecca H Lawrence
- Department of Psychology, University of California, Davis, CA, United States of America; California National Primate Research Center, Davis, CA, United States of America
| | - Emily S Rothwell
- California National Primate Research Center, Davis, CA, United States of America; Department of Psychological and Brain Sciences, University of Massachusetts, Amherst, Amherst, MA, United States of America
| | - Logan E Savidge
- Department of Psychology, University of California, Davis, CA, United States of America; California National Primate Research Center, Davis, CA, United States of America
| | - Marjorie Solomon
- MIND Institute, University of California, Davis, CA, United States of America
| | - Sally P Mendoza
- Department of Psychology, University of California, Davis, CA, United States of America; California National Primate Research Center, Davis, CA, United States of America
| | - Karen L Bales
- Department of Psychology, University of California, Davis, CA, United States of America; California National Primate Research Center, Davis, CA, United States of America; Department of Neurobiology, Physiology, and Behavior, University of California, Davis, CA, United States of America.
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11
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Karaskiewicz CL, Witczak LR, Lau AR, Dufek ME, Bales KL. Parenting costs time: Changes in pair bond maintenance across pregnancy and infant rearing in a monogamous primate (Plecturocebus cupreus). New Dir Child Adolesc Dev 2021; 2021:21-42. [PMID: 34766710 DOI: 10.1002/cad.20438] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Relationships support social animals' health, but maintaining relationships is challenging. When transitioning to parenthood, new parents balance pair-bond maintenance with infant care. We studied pair-bond maintenance via affiliation in 22 adult titi monkey pairs (Plecturocebus cupreus) for 16 months centered around their first offspring's birth. Pair affiliation peaked during pregnancy, decreased across the postpartum period, and rose after reaching minimum affiliation 32.6 weeks postpartum. Pairs in which fathers carry infants more than average had lower affiliation at the infant's birth and return to an increase in affiliation sooner. Parents of infants who were slow to independence had higher rates of affiliation. Titi monkey infants actively prefer their fathers; mothers may avoid their infant-carrying mate, suggesting infants play an active role in parental affiliative decline. Our data supports previous findings that affiliation between partners declines following an infant's birth, but demonstrates new knowledge about the extent and duration of affiliative decline.
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Affiliation(s)
- Chloe L Karaskiewicz
- Department of Psychology, University of California, Davis, Davis, California, USA.,California National Primate Research Center, University of California, Davis, Davis, California, USA
| | - Lynea R Witczak
- Department of Psychology, University of California, Davis, Davis, California, USA.,California National Primate Research Center, University of California, Davis, Davis, California, USA
| | - Allison R Lau
- California National Primate Research Center, University of California, Davis, Davis, California, USA.,Animal Behavior Graduate Group, University of California, Davis, Davis, California, USA
| | - Madison E Dufek
- California National Primate Research Center, University of California, Davis, Davis, California, USA
| | - Karen L Bales
- Department of Psychology, University of California, Davis, Davis, California, USA.,California National Primate Research Center, University of California, Davis, Davis, California, USA.,Animal Behavior Graduate Group, University of California, Davis, Davis, California, USA
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12
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Bales KL, Ardekani CS, Baxter A, Karaskiewicz CL, Kuske JX, Lau AR, Savidge LE, Sayler KR, Witczak LR. What is a pair bond? Horm Behav 2021; 136:105062. [PMID: 34601430 DOI: 10.1016/j.yhbeh.2021.105062] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/02/2021] [Accepted: 09/07/2021] [Indexed: 12/18/2022]
Abstract
Pair bonding is a psychological construct that we attempt to operationalize via behavioral and physiological measurements. Yet, pair bonding has been both defined differently in various taxonomic groups as well as used loosely to describe not just a psychological and affective phenomenon, but also a social structure or mating system (either social monogamy or just pair living). In this review, we ask the questions: What has been the historical definition of a pair bond? Has this definition differed across taxonomic groups? What behavioral evidence do we see of pair bonding in these groups? Does this observed evidence alter the definition of pair bonding? Does the observed neurobiology underlying these behaviors affect this definition as well? And finally, what are the upcoming directions in which the study of pair bonding needs to head?
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Affiliation(s)
- Karen L Bales
- Department of Psychology, University of California, Davis, United States of America; Department of Neurobiology, Physiology, and Behavior, University of California, Davis, United States of America; California National Primate Research Center, United States of America.
| | - Cory S Ardekani
- Department of Psychology, University of California, Davis, United States of America
| | - Alexander Baxter
- Department of Psychology, University of California, Davis, United States of America; California National Primate Research Center, United States of America
| | - Chloe L Karaskiewicz
- Department of Psychology, University of California, Davis, United States of America; California National Primate Research Center, United States of America
| | - Jace X Kuske
- Department of Psychology, University of California, Davis, United States of America
| | - Allison R Lau
- Department of Psychology, University of California, Davis, United States of America; California National Primate Research Center, United States of America
| | - Logan E Savidge
- Department of Psychology, University of California, Davis, United States of America; California National Primate Research Center, United States of America
| | - Kristina R Sayler
- Department of Human Ecology, University of California, Davis, United States of America
| | - Lynea R Witczak
- Department of Psychology, University of California, Davis, United States of America; California National Primate Research Center, United States of America
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13
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Van Belle S, Porter AM, Fernandez-Duque E, Di Fiore A. Ranging behavior and the potential for territoriality in pair-living titi monkeys (Plecturocebus discolor). Am J Primatol 2020; 83:e23225. [PMID: 33368565 DOI: 10.1002/ajp.23225] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 11/23/2020] [Accepted: 12/13/2020] [Indexed: 12/13/2022]
Abstract
Patterns of ranging behavior and space use are key for evaluating current ideas about the evolution and maintenance of pair-living and sexual monogamy as they provide insights into the dispersion of females, the potential for territoriality, and whether males are limited to defending an area that can support only one female and her offspring. We examined ranging behavior and space use to evaluate the potential for territoriality in five groups of red titi monkeys (Plecturocebus discolor) during a 10-year study in Ecuadorian Amazonia. Mean home range size, calculated using a time-sensitive local convex hull estimation procedure, was 4.0 ± 1.4 ha. Annual home ranges of neighboring groups overlapped, on average, 0%-7%. Mean daily path length was 670 ± 194 m, resulting in defendability indices of 2.2-3.6 across groups. Groups visited, on average, 4 of 12 sections of their home range border area per day, but that was not more often than would be expected by chance, and intergroup encounters were infrequent. We did not find evidence of active monitoring for intruders in border areas, in that groups did not travel either faster or slower when at the border than when in central areas of their range. The absence of overt monitoring might be compensated for by engaging in loud calls, which the study groups did throughout their home ranges; these calls may serve as an advertisement of occupancy and a deterrent to intruding conspecifics. Our finding that red titis have a high potential for territoriality is consistent with several of the main hypotheses proposed to explain pair-living in mammals.
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Affiliation(s)
- Sarie Van Belle
- Department of Anthropology and Primate Molecular Ecology and Evolution Laboratory, The University of Texas at Austin, Austin, Texas, USA
| | - Amy M Porter
- Department of Anthropology, University of California Davis, Davis, California, USA
| | - Eduardo Fernandez-Duque
- Department of Anthropology and School of the Environment, Yale University, New Haven, Connecticut, USA.,Facultad de Recursos Naturales, Universidad Nacional de Formosa, Formosa, Argentina.,College of Biological and Environmental Sciences, Universidad San Francisco de Quito, Cumbayá, Ecuador
| | - Anthony Di Fiore
- Department of Anthropology and Primate Molecular Ecology and Evolution Laboratory, The University of Texas at Austin, Austin, Texas, USA.,College of Biological and Environmental Sciences, Universidad San Francisco de Quito, Cumbayá, Ecuador
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14
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Dolotovskaya S, Roos C, Heymann EW. Genetic monogamy and mate choice in a pair-living primate. Sci Rep 2020; 10:20328. [PMID: 33230212 PMCID: PMC7683532 DOI: 10.1038/s41598-020-77132-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 11/02/2020] [Indexed: 12/03/2022] Open
Abstract
In pair-living mammals, genetic monogamy is extremely rare. One possible reason is that in socially monogamous animals, mate choice can be severely constrained, increasing the risk of inbreeding or pairing with an incompatible or low-quality partner. To escape these constraints, individuals might engage in extra-pair copulations. Alternatively, inbreeding can be avoided by dispersal. However, little is known about the interactions between mating system, mate choice, and dispersal in pair-living mammals. Here we genotyped 41 wild individuals from 14 groups of coppery titi monkeys (Plecturocebus cupreus) in Peruvian Amazon using 18 microsatellite loci. Parentage analyses of 18 young revealed no cases of extra-pair paternity, indicating that the study population is mostly genetically monogamous. We did not find evidence for relatedness- or heterozygosity-based mate choice. Despite the lack of evidence for active inbreeding avoidance via mate choice, mating partners were on average not related. We further found that dispersal was not sex-biased, with both sexes dispersing opportunistically over varying distances. Our findings suggest that even opportunistic dispersal, as long as it is not constrained, can generate sufficient genetic diversity to prevent inbreeding. This, in turn, can render active inbreeding avoidance via mate choice and extra-pair copulations less necessary, helping to maintain genetic monogamy.
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Affiliation(s)
- Sofya Dolotovskaya
- Behavioral Ecology and Sociobiology Unit, German Primate Center, Göttingen, Germany. .,Primate Genetics Laboratory, German Primate Center, Göttingen, Germany.
| | - Christian Roos
- Primate Genetics Laboratory, German Primate Center, Göttingen, Germany.,Gene Bank of Primates, German Primate Center, Göttingen, Germany
| | - Eckhard W Heymann
- Behavioral Ecology and Sociobiology Unit, German Primate Center, Göttingen, Germany
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15
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Dolotovskaya S, Heymann EW. Do less or eat more: strategies to cope with costs of parental care in a pair-living monkey. Anim Behav 2020. [DOI: 10.1016/j.anbehav.2020.03.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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16
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Singletary B, Tecot S. Multimodal pair-bond maintenance: A review of signaling across modalities in pair-bonded nonhuman primates. Am J Primatol 2020; 82:e23105. [PMID: 32011759 DOI: 10.1002/ajp.23105] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/21/2020] [Accepted: 01/22/2020] [Indexed: 12/11/2022]
Abstract
Only a handful of primate species exhibit the social relationship of pair-bonding. Efficient communication is critical for behavioral coordination within pair-bonds to maintain proximity and respond appropriately to extra-pair individuals, and possibly coordinate infant care. The use of complex signaling across modalities may help individuals improve communicative outcomes. We review many ways that pair-bonded species use signals to communicate and maintain bonds, though little previous research has taken a truly multimodal approach within a single species. We make a call for further investigation into pair-bonded communication using a multimodal approach to better understand how these species use all their senses to build, maintain, and advertise their bonds.
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Affiliation(s)
| | - Stacey Tecot
- School of Anthropology, University of Arizona, Tucson, Arizona.,Laboratory for the Evolutionary Endocrinology of Primates, School of Anthropology, University of Arizona, Tucson, Arizona
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