Genes, social transmission, but not maternal effects influence responses of wild Japanese macaques (Macaca fuscata) to novel-object and novel-food tests

Arnaud, Coline M.; Suzumura, Takafumi; Inoue, Eiji; Adams, Mark J.; Weiss, Alexander; Inoue‐Murayama, Miho

doi:10.1007/s10329-016-0572-9

Cited by 9 publications

(6 citation statements)

References 58 publications

(68 reference statements)

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“…Following these results, behavioral reaction norms of neophobia or exploration tendency with varying social contexts could be further tested in a longitudinal setting to assess the degree to which individual differences in reaction norms are stable throughout development, i.e., their rank-order stability. There are also examples of behavioral tests conducted with NHPs in the wild (e.g., playback experiments in Neumann et al 2013; novel-object and novel-food tests in Arnaud et al 2017). These could be paired with environmental information (e.g., current group composition, time elapsed since among-group conflict, etc.)…”

Section: What Do Our Measurements Tell Us About Stability? and What Dmentioning

confidence: 99%

Developing individual differences in primate behavior: the role of genes, environment, and their interplay

Borell

Weiss

Penke

2019

Behav Ecol Sociobiol

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As is the case for humans, it has long been thought that nonhuman primates can be described in terms of their personality. Scientific observations that support this view include the presence of individual differences in social behavior and that they are relatively stable throughout life. Consequently, individuals are constrained in their behavioral flexibility when dealing with various environmental challenges. Still, the variation among individuals during development suggests that the environment influences how primates behave. Research in fields including psychology, behavior genetics, and behavioral ecology have tried to identify the mechanisms responsible for this interplay of behavioral stability and change. In this review we integrate theories and findings from research on humans and nonhuman primates that highlight how and to what extent genetic and environmental contributions shape the development of social behavior. To do so we first provide an overview and define what is meant by mean level and rank-order change of behavior. We then review explanations of behavioral stability and change, focusing on the role of genetic effects, how environmental circumstances influence behavioral variation throughout development, and how genetic and environmental influences may interact to produce this variation. Finally, we point to future research directions that could help us to further understand the development of social behavior in primates from within a behavior genetics framework.

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Section: What Do Our Measurements Tell Us About Stability? and What Dmentioning

confidence: 99%

Developing individual differences in primate behavior: the role of genes, environment, and their interplay

Borell

Weiss

Penke

2019

Behav Ecol Sociobiol

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“…Evidence of tool-use behavior and diet in the wild (i.e., non-provisioned foods) was compiled from the literature. The Koshima Island macaques split into two groups in the 1970s, with the main group continuing to be provisioned on the sand, but the smaller 'Maki group' remaining restricted to the North end of the Island, although this group as well as solitary males would on occasion join the regular provisioning of the main group on the sand substrate (Arnaud et al, 2017).…”

Section: Methodsmentioning

confidence: 99%

Atypical tooth wear found in fossil hominins also present in a Japanese macaque population

Towle

MacIntosh

Hirata

et al. 2022

American Journal of Biological Anthropology

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Objectives: Atypical tooth wear, including macroscopically visible striations on anterior teeth and within root grooves on posterior teeth, are often regarded as evidence of non-masticatory, tool use behavior in fossil hominins. Both these types of dental tissue loss are often considered unique to the genus Homo and suggested to be the earliest evidence of human cultural habits. The aim of this study was to describe similar tooth wear found in a wild primate population and to conduct a differential diagnosis of this atypical tissue loss. Materials and Methods:The focus of this study was a sample of wild Japanese macaques from Koshima Island, Japan. Individuals were provisioned regularly on the beach as part of one of the longest running primate field sites. Tooth wear and fractures in this group were compared to two other non-provisioned populations. Information on diet and behavior were obtained from extensive literature and on-going field observations. Results: All Koshima Island individuals analyzed showed atypical tooth wear. Large macroscopic striations were visible on many teeth, with sub-vertical striations prominent on the labial surfaces of incisors. Root grooves on posterior teeth were observed in half of the individuals, some showing clear directional striations similar to those reported in "toothpick" grooves in fossil hominins. Tool use and the habitual insertion of non-masticatory items in the mouth has not been observed in this population.Discussion: Accidental ingestion of sand and oral processing of marine mollusks likely creates these atypical wear patterns. Implications for similar wear that has been associated with tool-use in fossil hominin samples were discussed.

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“…Moreover, group composition (Oostindjer et al, 2011) and an individual's own position in a group (Amici et al, 2020) can affect food neophobic responses. Finally, juveniles have been found less food neophobic than adults in some primates (Visalberghi et al, 2003;Ueno and Matsuzawa, 2005;Addessi and Visalberghi, 2006; but see Gustafsson et al, 2014;Arnaud et al, 2017). While studies generally find considerable differences in food neophobia between individuals (e.g., Marples et al, 1998;Exnerova et al, 2010;Liebl and Martin, 2014), few studies have investigated whether or not individuals are consistent in these differences.…”

Section: Introductionmentioning

confidence: 99%

Individual Variation in Dietary Wariness Is Predicted by Head Color in a Specialist Feeder, the Gouldian Finch

Eccles

Bethell

Greggor³

et al. 2021

Front. Ecol. Evol.

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Shifts in resource availability due to environmental change are increasingly confronting animals with unfamiliar food types. Species that can rapidly accept new food types may be better adapted to ecological change. Intuitively, dietary generalists are expected to accept new food types when resources change, while dietary specialists would be more averse to adopting novel food. However, most studies investigating changes in dietary breadth focus on generalist species and do not delve into potential individual predictors of dietary wariness and the social factors modulating these responses. We investigated dietary wariness in the Gouldian finch, a dietary specialist, that is expected to avoid novel food. This species occurs in two main head colors (red, black), which signal personality in other contexts. We measured their initial neophobic responses (approach attempts before first feed and latency to first feed) and willingness to incorporate novel food into their diet (frequency of feeding on novel food after first feed). Birds were tested in same-sex pairs in same and different head color pairings balanced across experiments 1 and 2. Familiar and novel food (familiar food dyed) were presented simultaneously across 5 days for 3 h, each. Gouldian finches fed on the familiar food first demonstrating food neophobia, and these latencies were repeatable. Birds made more approach attempts before feeding on novel than familiar food, particularly red-headed birds in experiment 1 and when partnered with a black-headed bird. Individuals consistently differed in their rate of incorporation of novel food, with clear differences between head colors; red-headed birds increased their feeding visits to novel food across experimentation equaling their familiar food intake by day five, while black-headed birds continually favored familiar food. Results suggest consistent among individual differences in response to novel food with red-headed birds being adventurous consumers and black-headed birds dietary conservatives. The differences in food acceptance aligned with responses to novel environments on the individual level (found in an earlier study) providing individuals with an adaptive combination of novelty responses across contexts in line with potential differences in movement patterns. Taken together, these novelty responses could aid in population persistence when faced with environmental changes.

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Genes, social transmission, but not maternal effects influence responses of wild Japanese macaques (Macaca fuscata) to novel-object and novel-food tests

Cited by 9 publications

References 58 publications

Developing individual differences in primate behavior: the role of genes, environment, and their interplay

Developing individual differences in primate behavior: the role of genes, environment, and their interplay

Atypical tooth wear found in fossil hominins also present in a Japanese macaque population

Individual Variation in Dietary Wariness Is Predicted by Head Color in a Specialist Feeder, the Gouldian Finch

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