Observed infanticides following a male immigration event in black howler monkeys, Alouatta pigra, at Palenque National Park, Mexico

Primates ◽  
2010 ◽  
Vol 51 (4) ◽  
pp. 279-284 ◽  
Author(s):  
Sarie Van Belle ◽  
Aimee E. Kulp ◽  
Robyn Thiessen-Bock ◽  
Marisol Garcia ◽  
Alejandro Estrada
2011 ◽  
Vol 57 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Sarie Van BELLE ◽  
Alejandro Estrada ◽  
Karen B. Strier

Abstract We investigated the social relationships among adult females in two multimale-multifemale groups of black howler monkeys Alouatta pigra during a 14-month study in Palenque National Park, Mexico. Based on over 900 focal hours and over 5400 scan samples recording neighboring group members, we found that females very rarely engaged in agonistic interactions and no dominance hierarchy could be discerned. Relationships among resident females were primarily affiliative, but females of one study group spent a higher proportion of time in close proximity and engaged in affiliative interactions with one another at higher rates than females in the other study group. The strength of female relationships increased with the birth of an infant. Although no females immigrated during the study period, the temporary association of three extragroup females with our study groups implies that the social system of black howler monkeys is more dynamic than previously suggested. These findings suggest that female black howler monkeys behave more similarly to female red howler monkeys A. seniculus than to female mantled howler monkeys A. palliata.


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Katherine R. Amato ◽  
Paul Garber ◽  
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Author(s):  
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Kris Gebhard

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pp. 652-664 ◽  
Author(s):  
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Author(s):  
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Truman P Young ◽  
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