Heterogeneity of Reproductive Aging in Free-Ranging Female Rhesus Macaques

2008 ◽  
pp. 62-79 ◽  
Author(s):  
Rodney L. Johnson ◽  
Ellen Kapsalis
Keyword(s):  
Rhesus Macaques ◽  
Reproductive Aging ◽  
Female Rhesus ◽  
Free Ranging ◽  
Female Rhesus Macaques

scholarly journals Female rhesus macaques discriminate unfamiliar paternal sisters in playback experiments: support for acoustic phenotype matching

2014 ◽  
Vol 281 (1774) ◽  
pp. 20131628 ◽  
Author(s):  
Dana Pfefferle ◽  
Angelina V. Ruiz-Lambides ◽  
Anja Widdig
Keyword(s):  
Rhesus Macaques ◽  
Kin Discrimination ◽  
Playback Experiments ◽  
Phenotype Matching ◽  
Discrimination Ability ◽  
Female Rhesus ◽  
Age Cohort ◽  
Underlying Mechanisms ◽  
Free Ranging ◽  
Female Rhesus Macaques

Widespread evidence exists that when relatives live together, kinship plays a central role in shaping the evolution of social behaviour. Previous studies showed that female rhesus macaques ( Macaca mulatta ) recognize familiar maternal kin using vocal cues. Recognizing paternal kin might, however, be more difficult as rhesus females mate promiscuously during the possible conception period, most probably concealing paternity. Behavioural observations indicate that semi free-ranging female rhesus macaques prefer to associate with their paternal half-sisters in comparison to unrelated females within the same group, particularly when born within the same age cohort. However, the cues and mechanism/s used in paternal kin discrimination remain under debate. Here, we investigated whether female rhesus macaques use the acoustic modality to discriminate between paternal half-sisters and non-kin, and tested familiarity and phenotype matching as the underlying mechanisms. We found that test females responded more often to calls of paternal half-sisters compared with calls of unrelated females, and that this discrimination ability was independent of the level of familiarity between callers and test females, which provides, to our knowledge, the first evidence for acoustic phenotype matching. Our study strengthens the evidence that female rhesus macaques can recognize their paternal kin, and that vocalizations are used as a cue.

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.

Social capital and physiological stress levels in free-ranging adult female rhesus macaques

2011 ◽  
Vol 102 (1) ◽  
pp. 76-83 ◽  
Author(s):  
L.J.N. Brent ◽  
S. Semple ◽  
C. Dubuc ◽  
M. Heistermann ◽  
A. MacLarnon
Keyword(s):  
Social Capital ◽  
Adult Female ◽  
Physiological Stress ◽  
Rhesus Macaques ◽  
Female Rhesus ◽  
Stress Levels ◽  
Free Ranging ◽  
Female Rhesus Macaques
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