Article
Behavioral Sciences
Filippo Aureli, Gabriele Schino
Summary: Brief touch in nonhuman primates serves to assess competitive tendencies, test social relationship status, and signal benign intent, playing an important role in social relationship regulation complementary to grooming behavior.
CURRENT OPINION IN BEHAVIORAL SCIENCES
(2022)
Review
Biology
T. M. Milewski, W. Lee, F. A. Champagne, J. P. Curley
Summary: Individuals in dominant and subordinate positions in social hierarchies exhibit different behaviors, physiology, and neural functioning. Dominant animals display higher levels of dominance behaviors and reproductive behaviors, while subordinate animals inhibit these behaviors and adapt to socially stressful contexts. These changes may have short-term benefits but pose long-term challenges to health. Additionally, rapid changes in social ranks are associated with dynamic modulations in the brain and periphery.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Nutrition & Dietetics
Corbin S. C. Johnson, Brett M. Frye, Thomas C. Register, Noah Snyder-Mackler, Carol A. Shively
Summary: Dietary composition is associated with the prevalence of psychiatric disorders, with the Western diet increasing the risk while the Mediterranean diet reducing the risk. In nonhuman primates, diet composition may affect immune system function through its effects on behavior. A randomized preclinical trial on middle-aged female cynomolgus macaques showed that the Mediterranean diet improved social behavior, reduced social isolation and anxiety, potentially mitigating social isolation-associated disorders.
Article
Behavioral Sciences
Dene A. Voisin, Alison Wakeford, Jonathon Nye, Jiyoung Mun, Sara R. Jones, Jason Locke, Kim L. Huhman, Mark E. Wilson, H. Elliott Albers, Vasiliki Michopoulos
Summary: Social status has a significant impact on the effects of fluoxetine on aggression, with subordinate individuals showing more pronounced changes. Furthermore, fluoxetine modulates socioemotional behavior through alterations in 5-HT1A receptor binding potential.
PHARMACOLOGY BIOCHEMISTRY AND BEHAVIOR
(2022)
Review
Neurosciences
Emanuel Ferreira-Fernandes, Joao Peca
Summary: The article compares findings from rodent and primate studies to create a model of neural and cellular networks supporting social hierarchies from macro to micro perspective. It summarizes literature on the prefrontal cortex and other relevant brain regions to expand the current view on social hierarchy behaviors.
FRONTIERS IN CELLULAR NEUROSCIENCE
(2022)
Article
Biology
Patricia Beltrao, Ana Cristina R. Gomes, Goncalo C. Cardoso
Summary: Bullying is a phenomenon where individuals attack those lowest in the social dominance hierarchy, and its purpose is not yet fully understood because the victims do not pose a challenge to the aggressors. However, it appears that bullying may serve as a means of displaying dominance to others. This can help manage dominance hierarchies and avoid direct confrontations with potentially dangerous opponents.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Biology
Tobit Dehnen, Danai Papageorgiou, Brendah Nyaguthii, Wismer Cherono, Julia Penndorf, Neeltje J. Boogert, Damien R. Farine
Summary: Male vulturine guineafowl strategically exhibit higher-cost aggressive interactions toward individuals with lower ranks, while lower-cost aggressive interactions are directed toward individuals further down the hierarchy. These results support the hypothesis that the costs associated with different interaction types can determine their expression in social groups with steep dominance hierarchies.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Geriatrics & Gerontology
Laura A. Cox, Sobha Puppala, Jeannie Chan, Kip D. Zimmerman, Zeeshan Hamid, Isaac Ampong, Hillary F. Huber, Ge Li, Avinash Y. L. Jadhav, Benlian Wang, Cun Li, Mark G. Baxter, Carol Shively, Geoffrey D. Clarke, Thomas C. Register, Peter W. Nathanielsz, Michael Olivier
Summary: This study used an integrated omics approach to investigate the changes in the prefrontal cortex (PFC) of healthy female baboons during aging. The results revealed known and novel pathways associated with PFC aging, with Gamma-aminobutyric acid (GABA) tissue content potentially serving as a biomarker for assessing PFC changes with age. These pathway changes may represent early steps in the decline of PFC functions and could provide biomarkers for assessing cognitive status in humans.
NEUROBIOLOGY OF AGING
(2023)
Article
Behavioral Sciences
W. Lee, M. F. Dwortz, T. M. Milewski, F. A. Champagne, J. P. Curley
Summary: Animals of different social status exhibit behavioral and physiological plasticity, which is coordinated by changes in brain gene transcription. This study used Tag-seq to explore RNA transcriptomes from male mice of different social ranks and identified candidate genes and pathways associated with status-related plasticity. Genes controlling feeding and social behaviors were found to be differentially transcribed across animals of varying social status.
HORMONES AND BEHAVIOR
(2022)
Article
Psychology, Social
Christopher M. Berry
Summary: This study critically examines the distinction between dominance and egalitarianism facets of social dominance orientation (SDO) and finds that the empirical evidence does not support this distinction.
JOURNAL OF PERSONALITY AND SOCIAL PSYCHOLOGY
(2023)
Review
Immunology
Steven Perrin, Marianne Magill
Summary: Prevention of allograft transplant rejection by inhibiting the CD40/CD40L costimulatory pathway has been demonstrated in nonhuman primates. Both anti CD40 and anti CD154 treatments effectively prevented acute and long term graft rejection, with anti CD154 treatment showing more durable inhibition after treatment cessation.
FRONTIERS IN IMMUNOLOGY
(2022)
Article
Multidisciplinary Sciences
Eithne Kavanagh, Sally E. Street, Felix O. Angwela, Thore J. Bergman, Maryjka B. Blaszczyk, Laura M. Bolt, Margarita Briseno-Jaramillo, Michelle Brown, Chloe Chen-Kraus, Zanna Clay, Camille Coye, Melissa Emery Thompson, Alejandro Estrada, Claudia Fichtel, Barbara Fruth, Marco Gamba, Cristina Giacoma, Kirsty E. Graham, Samantha Green, Cyril C. Grueter, Shreejata Gupta, Morgan L. Gustison, Lindsey Hagberg, Daniela Hedwig, Katharine M. Jack, Peter M. Kappeler, Gillian King-Bailey, Barbora Kubenova, Alban Lemasson, David MacGregor Inglis, Zarin Machanda, Andrew MacIntosh, Bonaventura Majolo, Sophie Marshall, Stephanie Mercier, Jerome Micheletta, Martin Muller, Hugh Notman, Karim Ouattara, Julia Ostner, Mary S. M. Pavelka, Louise R. Peckre, Megan Petersdorf, Fredy Quintero, Gabriel Ramos-Fernandez, Martha M. Robbins, Roberta Salmi, Isaac Schamberg, Oliver Schuelke, Stuart Semple, Joan B. Silk, J. Roberto Sosa-Lopez, Valeria Torti, Daria Valente, Raffaella Ventura, Erica van de Waal, Anna H. Weyher, Claudia Wilke, Richard Wrangham, Christopher Young, Anna Zanoli, Klaus Zuberbuehler, Adriano R. Lameira, Katie Slocombe
Summary: This study found that dominant individuals in non-human primate species who were more tolerant tend to vocalize at a higher rate, while despotic species have a larger repertoire of hierarchy-related vocalizations. This suggests that primate signals evolve in relation to the nature of interactions that characterize individuals' social relationships.
ROYAL SOCIETY OPEN SCIENCE
(2021)
Article
Behavioral Sciences
Matthew A. Cooper, Mackenzie K. Hooker, Conner J. Whitten, Jeff R. Kelly, Matthew S. Jenkins, Steve C. Mahometano, Maya C. Scarbrough
Summary: The medial amygdala controls social behavior and regulates responses to stress. Dominant animals showed higher neural activity in BNST-projecting MePD and MePV cells after winning or losing a social encounter. This pathway is associated with both aggression and stress coping responses.
BEHAVIOURAL BRAIN RESEARCH
(2023)
Article
Behavioral Sciences
Sean M. Maguire, Ross DeAngelis, Peter D. Dijkstra, Alex Jordan, Hans A. Hofmann
Summary: Living in a group can bring benefits to individuals, but also exposes them to intense competition. Individual behavior can directly and indirectly influence the behavior of others, as well as affect group characteristics. Dominant males in stable communities have higher testosterone levels compared to subordinate males.
HORMONES AND BEHAVIOR
(2021)
Article
Behavioral Sciences
Robert Fialkowski, Phillip Aufdemberge, Victoria Wright, Peter Dijkstra
Summary: The study found significant changes in markers of oxidative stress during social ascent in the East African cichlid fish. The newly dominant male showed lower blood plasma total antioxidant capacity but higher liver antioxidant defense. By day 14, all markers of oxidative stress in ascending males were similar to stable dominant males, indicating a dynamic response to social dominance.
BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
(2021)