AI Article Synopsis
- Polyspecific associations (PSA), where different primate species interact, are prevalent in African primate communities, particularly in Taï Forest.
- Data from a 17-month study involving Campbell's and lesser spot-nosed monkeys in association with Diana monkeys revealed that association rates were high and unaffected by fruit availability.
- Campbell's monkeys demonstrated greater reliance on Diana monkeys for protection from predators, while lesser spot-nosed monkeys employed a more cryptic strategy, impacting their association frequency, especially during months with high chimpanzee presence.
Article Abstract
Polyspecific associations (PSA) are common in many African primate communities, including the diurnal primates at Taï Forest, Côte d'Ivoire. In this paper I use data on the PSA of two forest guenons, Campbell's (Cercopithecus campbelli) and lesser spot-nosed monkeys (C. petaurista), with Diana monkeys (C. diana) and other primates to clarify interspecific relationships during 17 months including a 3-month low-fruit period. I analyzed association in relation to fruit availability and measured forest strata use for C. campbelli and C. petaurista when alone and in associations with and without C. diana. I also measured predator risk and reactions to potential predators. C. campbelli and C. petaurista had high association rates with C. diana monkeys, and fruit availability did not influence association rates. C. campbelli and C. petaurista used higher strata when in association with C. diana than when alone, but they used even higher strata when associated with other primates without C. diana. This suggested that C. diana competitively exclude C. campbelli and C. petaurista from higher strata. There were relatively large numbers of potential predators, and C. diana were usually the first callers to threatening stimuli, suggesting that antipredator benefits of association with C. diana outweighed the competitive costs. C. campbelli spent more time in association with C. diana than C. petaurista did and appeared to be more reliant on C. diana for antipredator benefits. C. petaurista were less reliant on C. diana because of a cryptic strategy and may have associated less in some months because of high chimpanzee (Pan troglodytes) presence.
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Article Synopsis
- Polyspecific associations (PSA), where different primate species interact, are prevalent in African primate communities, particularly in Taï Forest.
- Data from a 17-month study involving Campbell's and lesser spot-nosed monkeys in association with Diana monkeys revealed that association rates were high and unaffected by fruit availability.
- Campbell's monkeys demonstrated greater reliance on Diana monkeys for protection from predators, while lesser spot-nosed monkeys employed a more cryptic strategy, impacting their association frequency, especially during months with high chimpanzee presence.
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Anthropology Department, Columbia University, New York, NY, USA.
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