Testing the niche differentiation hypothesis in wild capuchin monkeys with polymorphic color vision

DePasquale, Allegra N.; Webb, Shasta E.; Williamson, Rachel E.; Fedigan, Linda M.; Melin, Amanda D.

doi:10.1093/beheco/arab001

Cited by 6 publications

(4 citation statements)

References 84 publications

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“…102 Yet, evidence from relative reproductive success in one well-studied population of capuchin monkeys argues against heterozygous advantage. 135 Thus, debate among other mechanisms of balancing selection continues, 136 without a clear resolution.…”

Section: Comparative Sensory Ecologymentioning

confidence: 99%

The sensory ecology of primate food perception, revisited

Veilleux

Dominy

Melin

2022

Evolutionary Anthropology

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Twenty years ago, Dominy and colleagues published “The sensory ecology of primate food perception,” an impactful review that brought new perspectives to understanding primate foraging adaptations. Their review synthesized information on primate senses and explored how senses informed feeding behavior. Research on primate sensory ecology has seen explosive growth in the last two decades. Here, we revisit this important topic, focusing on the numerous new discoveries and lines of innovative research. We begin by reviewing each of the five traditionally recognized senses involved in foraging: audition, olfaction, vision, touch, and taste. For each sense, we provide an overview of sensory function and comparative ecology, comment on the state of knowledge at the time of the original review, and highlight advancements and lingering gaps in knowledge. Next, we provide an outline for creative, multidisciplinary, and innovative future research programs that we anticipate will generate exciting new discoveries in the next two decades.

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Section: Comparative Sensory Ecologymentioning

confidence: 99%

The sensory ecology of primate food perception, revisited

Veilleux

Dominy

Melin

2022

Evolutionary Anthropology

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“…Trichromatic females spent more time foraging on insects because they can spot them less well than males and dichromatic females, who showed similar foraging times but were more efficient foragers. However, this difference may be mediated by energetic requirements of reproduction, as a later study found that nursing females foraged less overall than cycling females and di‐ and trichromats did not differ in time spent foraging on different food types (DePasquale et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

Male‐biased stone tool use by wild white‐faced capuchins (Cebus capucinus imitator)

Goldsborough,

Crofoot,

Barrett

2024

American J Primatol

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Tool‐using primates often show sex differences in both the frequency and efficiency of tool use. In species with sex‐biased dispersal, such within‐group variation likely shapes patterns of cultural transmission of tool‐use traditions between groups. On the Panamanian islands of Jicarón and Coiba, a population of white‐faced capuchins (Cebus capucinus imitator)—some of which engage in habitual stone tool use—provide an opportunity to test hypotheses about why such sex‐biases arise. On Jicarón, we have only observed males engaging in stone tool use, whereas on Coiba, both sexes are known to use tools. Using 5 years of camera trap data, we provide evidence that this variation likely reflects a sex difference in tool use rather than a sampling artifact, and then test hypotheses about the factors driving this pattern. Differences in physical ability or risk‐aversion, and competition over access to anvils do not account for the sex‐differences in tool‐use we observe. Our data show that adult females are physically capable of stone tool use: adult females on Coiba and juveniles on Jicarón smaller than adult females regularly engage in tool use. Females also have ample opportunity to use tools: the sexes are equally terrestrial, and competition over anvils is low. Finally, females rarely scrounge on left‐over food items either during or after tool‐using events, suggesting they are not being provisioned by males. Although it remains unclear why adult white‐faced capuchin females on Jicarón do not use stone‐tools, our results illustrate that such sex biases in socially learned behaviors can arise even in the absence of obvious physical, environmental, and social constraints. This suggests that a much more nuanced understanding of the differences in social structure, diet, and dispersal patterns are needed to explain why sex‐biases in tool use arise in some populations but not in others.

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“…Trichromatic females spent more time foraging on insects because they can spot them less well than males and dichromatic females, who showed similar foraging times but were more efficient foragers. However, this difference may be mediated by energetic requirements of reproduction, as a later study found that nursing females foraged less overall than cycling females and di- and trichromats did not differ in time spent foraging on different food types (DePasquale et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

“…However, this difference may be mediated by energetic requirements of reproduction, as a later study found that nursing females foraged less overall than cycling females and di-and trichromats did not differ in time spent foraging on different food types (DePasquale et al, 2021).…”

Section: Adult Females Might Have Different Diets Than Adult Malesmentioning

confidence: 96%

Male-biased stone tool use by wild white-faced capuchins (Cebus capucinus imitator)

Goldsborough,

Crofoot,

Barrett

2023

Preprint

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Tool-using primates often show sex differences in both the frequency and efficiency of tool use. In species with sex-biased dispersal, such within-group variation likely shapes patterns of cultural transmission of tool-use traditions between groups. On the Panamanian islands of Jicarón and Coiba, a population of white-faced capuchins (Cebus capucinus imitator) — some of which engage in habitual stone tool use — provide an opportunity to test hypotheses about why such sex-biases arise. On Jicarón, we have only observed males engaging in stone tool use, whereas on Coiba, both sexes are known to use tools. Using 5 years of camera trap data, we show that this variation reflects a true sex difference in tool use rather than a sampling artefact, and then test hypotheses about the factors driving this pattern. Differences in physical ability or risk-aversion, and competition over access to anvils do not account for the sex-differences in tool-use we observe. Our data show that females are physically capable of stone tool use: females on Coiba and juveniles on Jicarón as small and smaller than adult females regularly engage in tool use. Females also have ample opportunity to use tools: the sexes are equally terrestrial, and competition over anvils is low. Finally, females rarely scrounge on left-over food items either during or after tool-using events, suggesting they are not being provisioned by males. Although it remains unclear why white-faced capuchin females on Jicarón do not use stone-tools, our results illustrate that such sex biases in socially learned behaviors can arise even in the absence of obvious physical, environmental and social constraints. This suggests that a much more nuanced understanding of the differences in social structure, diet and dispersal patterns are needed to explain why sex-biases in tool use arise in some populations but not in others.

show abstract

Testing the niche differentiation hypothesis in wild capuchin monkeys with polymorphic color vision

Cited by 6 publications

References 84 publications

The sensory ecology of primate food perception, revisited

The sensory ecology of primate food perception, revisited

Male‐biased stone tool use by wild white‐faced capuchins (Cebus capucinus imitator)

Male-biased stone tool use by wild white-faced capuchins (Cebus capucinus imitator)

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