Population Study of Coiba Howler Monkeys (Alouatta CoibensisCoibensis) and Coiba Capuchin Monkeys (Cebus Capucinus Imitator), Coiba Island National Park, Republic of Panama

A population study of Coiba howler monkeys (Alouatta coibensis coibensis) and capuchin monkeys (Cebus capucinus imitator) on Coiba Island, Panama, revealed distinct demographic patterns. Howler monkey populations totaled 472 individuals across 109 groups, averaging 4.3 members per group, while capuchin populations numbered 626 individuals in 58 groups, with an average of 10.75 members per group. These findings suggest potential dietary constraints for howler monkeys, possibly related to seasonal fruit availability, whereas the broader diet of capuchins—including arthropods and seeds—may support higher survivorship rates. Conducted over two field seasons (2009–2010) using vocalization triangulation and strip-transect censuses, this study highlights the need for continued monitoring to understand the dynamics and behavioral adaptations of these primates in their island habitat, despite the absence of direct hunting threats.

Carvajal, P. M. (2012). Population Study of Coiba Howler Monkeys (Alouatta CoibensisCoibensis) and Coiba Capuchin Monkeys (Cebus Capucinus Imitator), Coiba Island National Park, Republic of Panama. Journal of Primatology, 01(02). https://doi.org/10.4172/2167-6801.1000104