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23 results for “social bonds”
Data from: Assessing the reproductive consequences of mate retention and pair bond duration in Thorn-tailed Rayadito (Aphrastura spinicauda), a short-lived, socially monogamous Neotropical bird
<p><strong>Description for "PairingData_Aspinicauda.xlsx" file.</strong></p> <p>Data from: Assessing the reproductive consequences of mate retention and pair bond duration in Thorn-tailed Rayadito (Aphrastura spinicauda), a short-lived, socially monogamous Neotropical bird<br> MS Reference Number: IBIS-2022-OA-113.R2<br> Article DOI: 10.1111/ibi.13183</p> <p>Please address questions to:</p> <p>Esteban Botero D.<br> Guest Scientist<br> Max Planck Institute for Ornithology<br> Dep. Behavioural Ecology and Evolutionary Genetics<br> Eberhard-Gwinner-Str. 8<br> 82319 Seewiesen, Germany<br> Telephone: +49 8157 932453<br> http://www.orn.mpg.de/en<br> e-mail: eboterod@gmail.com; ebotero@orn.mpg.de</p> <p>=====================================================================================<br> =====================================================================================</p> <p><br> General information:</p> <p>The whole dataset contains breeding data collected from a population of the furnariid Thorn-tailed rayadito (Aphrastura spinicauda) in north-central Chile (Fray Jorge National Park; 30º38’S, 71º40’W). These data were collected during 2009–2017 as part of a long-term study on the breeding biology of rayaditos. In this study, data were used to evaluate the consequences of mate replacement versus mate retention using 243 breeding attempts made by 159 different breeding pairs. This, in the end, allowed to test whether successive remating conferred reproductive benefits to reunited pairs.</p> <p>The data set is comprised by an Excel file (three spreadsheets) that are explained below.</p> <p>*************************************************************************************</p> <p>Excel file "PairingData_Aspinicauda.xlsx" (created 11-01-2023)</p> <p><br> ********** Spreadsheet "1. AllPairs" **********<br> This spreadsheet contains information from all breeding attempts monitored during the study (n = 243). Each row correspond to a unique breeding attempt. The ring number is used as an ID for each individual. The matrix includes information regarding individual and pair identification, age, previous breeding status (whether an individual is a widow or a divorcee), current pairing status (whether is a newly formed pair or a reunited pair), number of seasons breeding together for each pair, confidence on pairing information for each pair (high: there was absolute confidence on the previous breeding status of both members of a breeding pair; low: when information on previous breeding status was missing for at least one of the members of a pair), and measures of reproductive success (laying day, clutch size, umber of fledglings produced). This dataset can be saved as a *.txt file so that it can be imported into R (R Core Team 2020).</p> <p>The matrix contains the following variables:</p> <p>VARIABLE DESCRIPTION</p> <p>Year Sampling year.<br> Box Nestbox code.<br> FID ID for the breeding female.<br> FMAge Age for each breeding female (yearling: 1; adult: 2).<br> SocMID ID for the breeding male (social father of the clutch).<br> SocMaAge Age for each breeding male.<br> PairID ID for the breeding pair. This is for indexing purposes.<br> FPaSta Previous breeding status of the female (Wid: widow; Div: divorcee; Reu: reunited).<br> MPaSta Previous breeding status of the male (Wid: widow; Div: divorcee; Reu: reunited).<br> PairSta Pairing status for the focal breeding pair (New: newly formed; Reunited: reunited).<br> PairSea No. of seasons breeding together for each pair.<br> Certainty Certainty on previous breeding status (High or Low; see explanation above).<br> LayingD Laying date (number of days in relation to date of first egg in the population).<br> ClutchS Clutch size.<br> NoFle Number of fledging produced.</p> <p><br> ********** Spreadsheet "2. WidowFBre" **********<br> This spreadsheet contains breeding information for females that were monitored in the years before and after mate loss.</p> <p>The matrix contains the following variables:</p> <p>VARIABLE DESCRIPTION</p> <p>Year Sampling year.<br> Box Nestbox code.<br> FID ID for the breeding female.<br> LayingD Laying date during year after mate loss.<br> ClutchS Clutch size during year after mate loss.<br> NoFle Number of fledging produced during year after mate loss.<br> FPaSta Previous breeding status of the female (Wid: widow; Div: divorcee; Reu: reunited).<br> LayingD_x.1 Laying date during year before mate loss (year x-1).<br> ClutchS_x.1 Clutch size during year before mate loss (year x-1).<br> NoFle_x.1 Number of fledging produced during year before mate loss (year x-1).</p> <p><br> ********** Spreadsheet "3. WidowMBre" **********<br> This spreadsheet contains breeding information for males that were monitored in the years before and after mate loss.</p> <p>The matrix contains the following variables:</p> <p>VARIABLE DESCRIPTION</p> <p>Year Sampling year.<br> Box Nestbox code.<br> SocMID ID for the breeding male.<br> LayingD Laying date during year after mate loss.<br> NoFle Number of fledging produced during year after mate loss.<br> MPaSta Previous breeding status of the female (Wid: widow; Div: divorcee; Reu: reunited).<br> LayingD_x.1 Laying date during year before mate loss (year x-1).<br> NoFle_x.1 Number of fledging produced during year before mate loss (year x-1).</p> <p>*************************************************************************************</p> <p><br> =====================================================================================</p> <p><br> Methodological information (for more details, please see the related manuscript):</p> <p>A total of 101–157 nestboxes were installed in Fray Jorge since 2007, and are monitored annually during September–December. We gathered data on reproductive phenology and productivity during 2008–2017 for all nestbox occupants. Nestboxes were initially visited every 3–5 days to detect nest building. Once nestboxes were occupied, we increased the frequency of visits to record data on laying date, clutch size, and the number of hatchlings and fledglings produced (see more details in Botero-Delgadillo et al. 2017). We captured and marked breeding adults and nestlings with numbered aluminium rings when nestlings were 12–14 days old. Additionally, we used mist nets to capture adult birds breeding in natural cavities in our study site. A total of 248 adults (132 females, 116 males) and 730 nestlings were marked. For all nests that were monitored, we marked ~90% of all breeding adults every year.</p> <p>We used data from a total of 243 breeding attempts made by 159 breeding pairs captured during 2009–2017 to describe mating patterns in the study population, including: (i) the duration of social bonds for all breeding pairs formed during the study; (ii) the proportion of newly formed and remated pairs found during the entire study period and during each year; and (iii) the proportion of divorce versus mate loss causing pair dissolution.</p> <p>The consequences of mate retention and successive remating were evaluated by performing mixed-effects models in the lme4 package (Bates et al. 2015) in the free software R 4.0.2 (R Core Team 2020). To assess whether reproductive success was higher for remated pairs than for newly formed pairs, we tested for the effects of pairing status (newly formed vs. remated) on measures of breeding productivity. Linear models were fit for laying date, clutch size, and number of fledglings produced. To control for between-season variation in reproductive output, we calculated Z-scores for all numeric response variables using the mean and standard deviation for each year. All models included age class of both members of a breeding pair as covariates (yearling vs. adult), and female, male and pair ID as random intercepts. First, we performed analyses on the complete set of 243 breeding attempts, and subsequently repeated the analyses on a reduced subset of data that only contained pairs whose previous pairing status was known with certainty (n = 159). This allowed to evaluate potential bias in our results, given that the complete dataset included pairs misclassified as “newly formed”, because the previous pairing status of older individuals that we captured for the first time is unknown.</p> <p>We also investigated whether individuals experienced reduced reproductive success after mate replacement. To test this, we compared breeding productivity of individuals in the years before and after mate loss. We focused the analysis on widowed birds, as the frequency of divorced individuals was low in the study population. We used linear mixed-effects models that included data on laying date, clutch size, and number of fledglings produced as response variables. Each sex was tested separately, with clutch size being evaluated only for females. We included the breeding season as predictor (year x vs. x-1), and entered individual ID as a random intercept.</p> <p>Lastly, to evaluate whether successive remating influenced reproductive success, we used data on pairs that bred more than once together during the study (n = 132). Linear mixed-effects models were fitted to assess the effect of the number of seasons breeding together on laying date, clutch size, and number of fledglings produced. Between-season effects were controlled as described above, while the number of seasons breeding together (range: 1–6) was introduced as predictor. Given the skewed distribution of the number of seasons breeding together in this dataset (one = 36%; two = 36%; three = 17%; four = 8%; five = 2%; six = 1%), and the possibility that its effect on reproductive success might not be linear, a dummy variable indicating whether an observation belonged to the first breeding attempt (first attempt vs. after-first attempt) was also entered as predictor. Models included female and male age class as covariates, and pair ID as a random intercept.</p> <p><strong>References:</strong></p> <p>Botero-Delgadillo, E., Quirici, V., Poblete, Y., Cuevas, E., Kuhn, S., Girg, A., Teltscher, K., Poulin, E., Kempenaers, B., & Vásquez, R. A. (2017). Variation in fine-scale genetic structure and local dispersal patterns between peripheral populations of a South American passerine bird. Ecology and Evolution, 7(20), 8363–8378. https://doi.org/10.1002/ece3.3342</p> <p>Bates, D., Maechler, M., Bolker, B., & Walker, S. 2015. Fitting linear mixed-effects models using lme4. J. Stat. Soft. 67: 1–48.</p> <p>R Core Team. (2020). R: a language and environment for statistical computing, version 4.0.2. R Foundation for Statistical Computing, Vienna, Austria, http://www.R.project.org</p> <p><br> =====================================================================================<br> =====================================================================================</p>
Social bonding through shared experiences: The role of emotional intensity
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Bonds of bros and brothers: Kinship and social bonding in post-dispersal male macaques
Group-living animals often maintain a few very close affiliative relationships – social bonds – that can buffer them against many of the inevitable costs of gregariousness. Kinship plays a central role in the development of such social bonds. The bulk of research on kin biases in sociality has focused on philopatric females, who typically live in deeply kin-structured systems, with matrilineal dominance rank inheritance and life-long familiarity between kin. Closely related males, in contrast, are usually not close in rank or familiar, which offers the opportunity to test the importance of kinship per se in the formation of social bonds. So far, however, kin biases in male social bonding have only been tested in philopatric males, where familiarity remains a confounding factor. Here, we studied bonds between male Assamese macaques, a species in which males disperse from their natal groups, and in which male bonds are known to affect fitness. Combining extensive behavioural data on 43 adult males over a 10-year period with DNA microsatellite relatedness analyses, we find that post-dispersal males form stronger relationships with the few close kin available in the group than with the average non-kin. However, males form the majority of their bonds with non-kin, and may choose non-kin over available close kin to bond with. Our results show that kinship facilitates bond formation, but is not a prerequisite for it, which suggests that strong bonds are not restricted to kin in male mammals and that animals cooperate for both direct and indirect fitness benefits.
Data from: Brain functional networks associated with social bonding in monogamous voles
<p>Previous studies have related pair bonding in Microtus ochrogaster, the prairie vole, with plastic changes in several brain regions. However, the interactions between these socially-relevant regions have yet to be described. In this study, we used resting state magnetic resonance imaging to explore bonding behaviors and functional connectivity of brain regions previously associated with pair bonding. Thirty-two male and female prairie voles were scanned at baseline, 24h and 2 weeks after the onset of cohabitation. By using network based statistics, we identified that the functional connectivity of a cortico-striatal network predicted the onset of affiliative behavior, while another predicted the amount of social interaction during a partner preference test. Furthermore, a network with significant changes in time was revealed, also showing associations with the level of partner preference. Overall, our findings revealed the association between network-level functional connectivity changes and social bonding.</p>
Do the directions of Social Bonds intervention differentiate the World in terms of capital per beneficiary raised and scheme duration?
<p>Appendix 1 to the article <strong>Do the directions of Social Bonds intervention differentiate the World in terms of capital per beneficiary raised and scheme duration? </strong></p>
Data from: Brain functional networks associated with social bonding in monogamous voles
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Bonds of bros and brothers: Kinship and social bonding in post-dispersal male macaques
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Data from: Social bonds do not mediate the relationship between early adversity and adult glucocorticoids in wild baboons
<p>In humans and other animals, harsh conditions in early life can have profound effects on adult physiology, including the stress response. This relationship may be mediated by a lack of supportive relationships in adulthood. That is, early life adversity may inhibit the formation of supportive social ties, and weak social support is itself often linked to dysregulated stress responses. Here we use prospective, longitudinal data from wild baboons in Kenya to test the links between early adversity, adult social bonds, and adult fecal glucocorticoid hormone concentrations (a measure of hypothalamic-pituitary-adrenal (HPA) axis activation and the stress response). Using a novel causal inference framework, we found that experiencing one or more sources of early adversity led to a 9-14% increase in females' glucocorticoid concentrations across adulthood. However, these effects were not mediated by weak social bonds: the direct effects of early adversity on adult glucocorticoid concentrations were 11 times stronger than the effects mediated by social bonds. This pattern occurred, in part, because the effect of social bonds on glucocorticoids was weak compared to the powerful effects of early adversity on glucocorticoid levels in adulthood. Hence, in female baboons, weak social bonds in adulthood are not enough to explain the effects of early adversity on glucocorticoid concentrations. Together, our results support the well-established notions that early adversity and weak social bonds both predict poor adult health. However, the magnitudes of these two effects differ considerably, and they may act independently of one another.</p>
Social bonds, social status and survival in wild baboons: a tale of two sexes
<p>People who are more socially integrated or have higher socio-economic status live longer. Recent studies in nonhuman primates show striking convergences with this human pattern: female primates with more social partners, stronger social bonds or higher dominance rank all lead longer lives. However, it remains unclear whether social environments also predict survival in male nonhuman primates, as it does in men. This gap persists because, in most primates, males disperse among social groups, resulting in many males who disappear with unknown fate and have unknown dates of birth. We present a Bayesian model to estimate the effects of time-varying social covariates on age-specific adult mortality in both sexes of wild baboons. We compare how the survival trajectories of both sexes are linked to social bonds and social status over the life. We find that, parallel to females, male baboons who are more strongly bonded to females have longer lifespans. However, males with higher dominance rank for their age appear to have shorter lifespans. This finding brings new understanding to the adaptive significance of heterosexual social bonds for male baboons: in addition to protecting the male's offspring from infanticide, these bonds may have direct benefits to males themselves.</p>
Data from: Stronger social bonds do not always predict greater longevity in a gregarious primate
In group-living species, individuals often have preferred affiliative social partners, with whom ties or bonds can confer advantages that correspond with greater fitness. For example, in adult female baboons and juvenile horses, individuals with stronger or more social ties experience greater survival. We used detailed behavioral and life history records to explore the relationship between tie quality and survival in a gregarious monkey (Cercopithecus mitis stuhlmanni), while controlling for dominance rank, group size, and life history strategy. We used Cox proportional hazards regressions to model the cumulative (multi-year) and current (single-year) relationships of social ties and the hazard of mortality in 83 wild adult females of known age, observed 2–8 years each (437 subject-years) in eight social groups. The strength of bonds with close partners was associated with increased mortality risk under certain conditions: Females that had strong bonds with close partners that were inconsistent over multiple years had a higher risk of mortality than females adopting any other social strategy. Within a given year, females had a higher risk of death if they were strongly bonded with partners that changed from the previous year versus with partners that remained consistent. Dominance rank, number of adult female groupmates, and age at first reproduction did not predict the risk of death. This study demonstrates that costs and benefits of strong social bonds can be context-dependent, relating to the consistency of social partners over time.
[dataset] Behavioral expression of father-daughter bonds affects sociality and responsiveness to oxytocin and vasopressin treatments in captive juvenile female titi monkeys (Plecturocebus cupreus)
<p>[dataset] Social bonds influence physiology and behavior, which can shape how individuals respond to physical and affective challenges. Coppery titi monkey (<em>Plecturocebus cupreus</em>) offspring form selective bonds with their fathers, making them ideal for investigating how father-daughter bonds influence juveniles’ responses to oxytocin (OT) and vasopressin (AVP) manipulations. We quantified 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 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 variation in 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 formation of pair bonds with partners.</p>
Examining Transcutaneous Vagal Nerve Stimulation as a Facilitator of Social Bonding
ClinicalTrials.gov study NCT05899413. IPD Sharing: NO. Countries: 1. Publications: 0.
Data from: Social bonds do not mediate the relationship between early adversity and adult glucocorticoids in wild baboons
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Social bonds, social status and survival in wild baboons: a tale of two sexes
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Data from: Stronger social bonds do not always predict greater longevity in a gregarious primate
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Data from: Pair bonds, reproductive success and rise of alternate mating strategies in a social carnivore.
Monogamy is commonly observed across a wide variety of species and taxa and arises when young are altricial, parental investment in young is high, and mate monopolization is generally not possible. In such species, pairs may bond for multiple breeding seasons while successfully rearing young. Individuals, however, may attempt to bypass the dominant mating strategy particularly when breeding opportunities are limited. Currently, we do not know how pair bond duration affects the efficacy of alternative mating strategies in populations with a monogamous mating system. Additionally, inferences about pair bond effects on reproductive success (i.e., both clutch size and recruitment) are largely limited to long-lived birds and little is known about effects on mammalian cooperative breeders. I used genetic sampling and pedigrees to examine the effects of pair bond duration on reproductive success (i.e., litter size, recruitment) and mating strategies in a population of gray wolves (Canis lupus) in Idaho USA. There was a positive, marginally significant relationship between pair bond duration and apparent survival of offspring. Increased pair bond duration was also associated with a dampening in the prevalence of other alternative mating strategies such as sneaker males and polygamy. The selective advantage of alternative mating strategies are a combination of population, group (for applicable species), individual, and social influences such as pair bonds. The distribution of pair bonds in a monogamous population affects the selective advantage, and hence frequency, of various mating strategies observed.
Data from: More than kin: subordinates foster strong bonds with relatives and potential mates in a social bird
Social interactions shape relationships between individuals in complex societies. Affiliative interactions are associated with benefits and strengthen social bonds, while aggressive interactions are costly and negatively affect social bonds. Individuals may attempt to reduce aggressive encounters through submissive displays directed at higher-ranking individuals. Thus, fine-scale patterns of affiliative, aggressive and submissive interactions may reflect costly and beneficial social relationships within groups, providing insight into the benefits of group living and the mechanisms of conflict resolution. So far however, most studies have looked at social interactions and benefits of group living in isolation. We investigated how the strength of social bonds (affiliative vs aggressive interactions) and submissive displays varied with kin-selected and potential mating benefits, and with reproductive conflict in the cooperatively breeding purple-crowned fairy-wren, Malurus coronatus. Our results revealed that subordinates formed equally strong social bonds with kin and potential mates (unrelated opposite-sex individuals) while they formed antagonistic relationships with reproductive competitors that offered no kin-selected or mating benefits (unrelated same-sex individuals). Submissive displays were directed exclusively at same-sex breeders, regardless of relatedness. Affiliation and submission were associated with reduced foraging time when food was limited, indicating a cost to maintaining positive relationships. Together, our results suggest that the strength of social bonds is determined by (potential) benefits obtained from group members, while submission likely serves to reduce conflict. Our findings highlight the importance of time-costly social interactions for maintaining relationships with group members, providing insight into how social groups of individuals with (partly) divergent interests can remain stable.
Data from: More than kin: subordinates foster strong bonds with relatives and potential mates in a social bird
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Data from: Social-bond strength influences vocally-mediated recruitment to mobbing
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Data from: Pair bonds, reproductive success and rise of alternate mating strategies in a social carnivore.
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