Body signals during social play in free-ranging rhesus macaques (Macaca mulatta): A systematic analysis

2013 ◽  
Vol 76 (2) ◽  
pp. 168-179 ◽  
Author(s):  
Akie Yanagi ◽  
Carol M. Berman
Keyword(s):  
Macaca Mulatta ◽  
Rhesus Macaques ◽  
Social Play ◽  
Systematic Analysis ◽  
Free Ranging

Infant handling enhances social bonds in free-ranging rhesus macaques (Macaca mulatta)

Behaviour ◽  
2017 ◽  
Vol 154 (7-8) ◽  
pp. 875-907 ◽  
Author(s):  
Erica S. Dunayer ◽  
Carol M. Berman
Keyword(s):  
Macaca Mulatta ◽  
Social Bonds ◽  
Rhesus Macaques ◽  
Social Characteristics ◽  
Future Research ◽  
Fitness Effects ◽  
Early Handling ◽  
Infant Handling ◽  
Free Ranging ◽  
The Relationship

Throughout the primate order, individuals are highly motivated to handle infants that are not their own. Given the differing and often conflicting interests of the various participants in handling interactions (handler, infant, and mother), most functional hypotheses are specific to particular handling roles. Here we explore one hypothesis that may apply to all participants, but that has received relatively little attention: that handling may facilitate the formation and maintenance of social bonds. Using free-ranging rhesus macaques (Macaca mulatta) on Cayo Santiago, we examine the relationship between infant handling in the early weeks and the strength and diversity of infant social bonds months later, when infant relationships were more independent from those of their mothers. Our results largely confirm the influence of several social characteristics (kinship, rank, sex, and age) in governing handling interactions. They also provide the first evidence that early handling is associated with later social bonds that are stronger than expected based on these social characteristics. However, the enhancement of bonds is largely confined to related handlers; frequent unrelated handlers did not generally go on to form strong bonds with infants. This suggests that kinship may be a sort of prerequisite to the enhancement of social bonds via handling. Given the adaptive benefits of strong social bonds among adult primates, future research should investigate whether early infant handling may have longer term fitness effects.

Aspects of fight interference in free-ranging and compound-dwelling rhesus macaques (Macaca mulatta)

1987 ◽  
Vol 12 (3) ◽  
pp. 287-298 ◽  
Author(s):  
Jay R. Kaplan ◽  
Dennis K. Chikazawa ◽  
Stephen B. Manuck
Keyword(s):  
Macaca Mulatta ◽  
Rhesus Macaques ◽  
Free Ranging

Multiple sirehood in free-ranging twin rhesus macaques (Macaca mulatta)

2002 ◽  
Vol 57 (1) ◽  
pp. 31-34 ◽  
Author(s):  
Fred B. Bercovitch ◽  
Anja Widdig ◽  
John D. Berard ◽  
Peter Nürnberg ◽  
Matt J. Kessler ◽  
...  
Keyword(s):  
Macaca Mulatta ◽  
Rhesus Macaques ◽  
Free Ranging

scholarly journals Experimental evidence that female rhesus macaques (Macaca mulatta) perceive variation in male facial masculinity

2017 ◽  
Author(s):  
Kevin A. Rosenfield ◽  
Stuart Semple ◽  
Alexander V. Georgiev ◽  
Dario Maestripieri ◽  
James P. Higham ◽  
...  
Keyword(s):  
Macaca Mulatta ◽  
Rhesus Macaques ◽  
Female Mate Choice ◽  
Primate Species ◽  
Necessary Condition ◽  
Sexually Dimorphic ◽  
Face Shape ◽  
Facial Masculinity ◽  
Facial Shape ◽  
Free Ranging

AbstractAmong many primate species, face shape is sexually dimorphic, and male facial masculinity has been proposed to influence female mate choice and male-male competition by signalling competitive ability. However, whether conspecifics pay attention to facial masculinity has only been assessed in humans. In a study of free-ranging rhesus macaques, Macaca mulatta, we used a two-alternative look-time experiment to test whether females perceive male facial masculinity. We presented 107 females with pairs of images of male faces – one with a more masculine shape and one more feminine – and recorded their looking behaviour. Females looked at the masculine face longer than at the feminine face in more trials than predicted by chance. Although there was no overall difference in average look-time between masculine and feminine faces across all trials, females looked significantly longer at masculine faces in a subset of trials for which the within-pair difference in masculinity was most pronounced. Additionally, the proportion of time subjects looked toward the masculine face increased as the within-pair difference in masculinity increased. This study provides evidence that female macaques perceive variation in male facial shape, a necessary condition for intersexual selection to operate on such a trait. It also highlights the potential impact of perceptual thresholds on look-time experiments.

scholarly journals Experimental evidence that female rhesus macaques ( Macaca mulatta ) perceive variation in male facial masculinity

2019 ◽  
Vol 6 (1) ◽  
pp. 181415 ◽  
Author(s):  
Kevin A. Rosenfield ◽  
Stuart Semple ◽  
Alexander V. Georgiev ◽  
Dario Maestripieri ◽  
James P. Higham ◽  
...  
Keyword(s):  
Macaca Mulatta ◽  
Rhesus Macaques ◽  
Female Mate Choice ◽  
Primate Species ◽  
Necessary Condition ◽  
Sexually Dimorphic ◽  
Face Shape ◽  
Facial Masculinity ◽  
Facial Shape ◽  
Free Ranging

Among many primate species, face shape is sexually dimorphic, and male facial masculinity has been proposed to influence female mate choice and male–male competition by signalling competitive ability. However, whether conspecifics pay attention to facial masculinity has only been assessed in humans. In a study of free-ranging rhesus macaques, Macaca mulatta , we used a two-alternative look-time experiment to test whether females perceive male facial masculinity. We presented 107 females with pairs of images of male faces—one with a more masculine shape and one more feminine—and recorded their looking behaviour. Females looked at the masculine face longer than at the feminine face in more trials than predicted by chance. Although there was no overall difference in average look-time between masculine and feminine faces across all trials, females looked significantly longer at masculine faces in a subset of trials for which the within-pair difference in masculinity was most pronounced. Additionally, the proportion of time subjects looked toward the masculine face increased as the within-pair difference in masculinity increased. This study provides evidence that female macaques perceive variation in male facial shape, a necessary condition for intersexual selection to operate on such a trait. It also highlights the potential impact of perceptual thresholds on look-time experiments.

Preliminary analysis of drinking from seawater sources by free-ranging rhesus macaques (Macaca mulatta)

1993 ◽  
Vol 31 (3) ◽  
pp. 231-237 ◽  
Author(s):  
Shawn M. Lehman ◽  
Deborah J. Overdorff ◽  
Robert G. Lessnau
Keyword(s):  
Macaca Mulatta ◽  
Preliminary Analysis ◽  
Rhesus Macaques ◽  
Free Ranging

scholarly journals Laparoscopic diagnosis of gross reproductive abnormalities in free-ranging female rhesus macaques (Macaca mulatta)

2012 ◽  
Vol 2 (1) ◽  
pp. 13
Author(s):  
Vijay Kumar ◽  
Anshu Raj
Keyword(s):  
Old Age ◽  
Macaca Mulatta ◽  
Ovarian Tumor ◽  
Rhesus Macaques ◽  
Age Group ◽  
Reproductive Disorders ◽  
Female Rhesus ◽  
Trapping Method ◽  
Free Ranging ◽  
Female Rhesus Macaques

A study was conducted between July 2010 to June 2011 in the Monkey Sterilization Centre, Gopalpur, Himachal Pradesh, India to assess the prevalence of reproductive disorders by laparoscopic examination of the genitalia of female rhesus macaques. The animals were captured from different locations in the state using a cage trapping method. A total of 720 female rhesus macaques underwent laparoscopic examination of their reproductive tracts. A total of 63 cases were found to have reproductive abnormalities. Out of these 63 cases, the most common abnormalities reported were ovarian cyst 3.05% (n=22), ovarian tumor 1.66% (n=12), uterine tumor 1.25% (n=9), uterine edema 0.97% (n=7), uterine rupture 0.83% (n=6), ectopic pregnancy 0.69% (n=5), unicornis or acornis 0.28% (n=2). The highest number of cases of uterine abnormalities was recorded in the 12-16 year old age group (33.33%), followed by 8-12 year olds (25.39%), 16-20 year olds (22.22%), then 4-8 year olds (15.87%) and 0-4 year olds (3.17%). Of the 63 animals that showed genital abnormalities, only 52 were found to be pregnant during the breeding season from November to March in the 5-20 year old age group, while 11 animals were not pregnant; a pregnancy rate of 82.53% (52 of 63) of the female rhesus macaques with reproductive abnormalities.

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