Division of labor in hand usage in free-ranging bonnet macaques,Macaca radiata

2013 ◽  
Vol 76 (6) ◽  
pp. 576-585 ◽  
Author(s):  
Madhur Mangalam ◽  
Nisarg Desai ◽  
Mewa Singh
Keyword(s):  
Division Of Labor ◽  
Macaca Radiata ◽  
Bonnet Macaques ◽  
Free Ranging

scholarly journals Division of Labor in Hand Usage Is Associated with Higher Hand Performance in Free-Ranging Bonnet Macaques,Macaca radiata

2014 ◽  
Author(s):  
Madhur Mangalam ◽  
Nisarg Desai ◽  
Mewa Singh
Keyword(s):  
Division Of Labor ◽  
Dimensional Space ◽  
Absolute Difference ◽  
Macaca Radiata ◽  
Physical Strength ◽  
Reaching Task ◽  
Bonnet Macaques ◽  
Hand Performance ◽  
Free Ranging ◽  
Performance Differentiation

A practical approach to understanding lateral asymmetries in body, brain, and cognition would be to examine the performance advantages/disadvantages associated with the corresponding functions and behavior. In the present study, we examined whether the division of labor in hand usage, marked by the preferential usage of the two hands across manual operations requiring maneuvering in three-dimensional space (e.g., reaching for food, grooming, and hitting an opponent) and those requiring physical strength (e.g., climbing), as described by Mangalam et al. [1], is associated with higher hand performance in free-ranging bonnet macaques, Macaca radiata. We determined the extent to which (a) the macaques exhibit laterality in hand usage in an experimental unimanual and a bimanual food-reaching task, and (b) manual laterality is associated with hand performance in an experimental hand-performance-differentiation task. We found strong negative relationships between (a) the performance of the preferred hand in the hand-performance-differentiation task (measured as the latency in food extraction; lower latency = higher performance), the preferred hand determined using the bimanual food-reaching task, and the normalized difference in the performance between the two hands (measured as the difference in the latency in food extraction between them normalized by the latency in food extraction using the preferred hand), and (b) the normalized difference in the performance between the two hands and the manual specialization (measured as the absolute difference in the laterality in hand usage between the unimanual and the bimanual food-reaching tasks; lesser difference = higher manual specialization). These observations demonstrate that the division of labor between the two hands is associated with higher hand performance.

scholarly journals Endoparasitic Prevalence of Urban Free Ranging Bonnet macaques (Macaca radiata) in Coonoor Town, Nilgiris, Tamil Nadu: A Transversal Study

2016 ◽  
Vol 07 (05) ◽  
Author(s):  
Manick Sundar B ◽  
Boon Allwin ◽  
Stalin Vedamanickam ◽  
Anjana Mohanraj ◽  
Bharath Jothi S
Keyword(s):  
Tamil Nadu ◽  
Macaca Radiata ◽  
Bonnet Macaques ◽  
Free Ranging ◽  
Transversal Study

scholarly journals Infant Survival Among Free-Living Bonnet Macaques (Macaca radiata) in South India

2021 ◽  
Vol 42 (2) ◽  
pp. 220-236
Author(s):  
Małgorzata E. Arlet ◽  
Krishna N. Balasubramaniam ◽  
Rajarshi Saha ◽  
Brianne Beisner ◽  
Pascal R. Marty ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Dominance Rank ◽  
Sociodemographic Factors ◽  
Primate Species ◽  
Offspring Survival ◽  
Macaca Radiata ◽  
Infant Survival ◽  
Female Reproductive Success ◽  
Bonnet Macaques ◽  
Free Ranging

AbstractFemale reproductive success depends to a large extent on infants’ ability to survive to maturity. While most studies of female reproductive success have focused on the effects of individuals’ sociodemographic factors (e.g., age/parity, dominance rank) on offspring survival among wild primates living in less disturbed habitats, little research has focused on offspring survival in urban or periurban animals. Here we investigated sociodemographic and anthropogenic determinants of infant survival (up to 1 yr of age) in free-ranging bonnet macaques (Macaca radiata) living in a periurban environment in Southern India. We conducted the study from November 2016 to May 2018, on two groups of bonnet macaques at the Thenmala tourist site in the state of Kerala. Fifty infants were born across two birth seasons. Of these infants, 29.2% died or disappeared in 2017 and 26.9% died or disappeared in 2018. We found that infant survival was strongly influenced by the mother’s parity: infants of experienced mothers had a better chance of survival than those of first-time mothers. We also found that male infants were more likely to die than female infants. However, we found no effects of mothers’ dominance rank, or of frequency of mothers’ interactions with humans and time spent foraging on anthropogenic food, on infant survival. Our results, consistent with findings from other wild primate species, show that even in challenging human-impacted environments, experienced bonnet macaque mothers have greater success than inexperienced ones.

Characteristics of the social life of bonnet macaques (Macaca radiata)

Primates ◽  
1971 ◽  
Vol 12 (3-4) ◽  
pp. 247-266 ◽  
Author(s):  
Yukimaru Sugiyama
Keyword(s):  
Social Life ◽  
Macaca Radiata ◽  
Bonnet Macaques ◽  
The Social

Early environment shapes the development of gaze aversion by wild bonnet macaques (Macaca radiata)

Primates ◽  
2002 ◽  
Vol 43 (3) ◽  
pp. 217-222 ◽  
Author(s):  
Richard G. Coss ◽  
Shayna Marks ◽  
Uma Ramakrishnan
Keyword(s):  
Macaca Radiata ◽  
Early Environment ◽  
Gaze Aversion ◽  
Bonnet Macaques
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