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Omnivore

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  • First Online:
Encyclopedia of Animal Cognition and Behavior
  • 142 Accesses

Synonyms

Consumer; Heterotroph; Scavenger

Definition

An omnivore is an organism with a dietary intake consisting of both plant- and animal-derived materials.

Introduction

An omnivore is defined as an animal that consumes both plant- and animal-derived foods, the prefix being derived from the Latin words omnis, meaning “all,” and vor, meaning “to devour.” Omnivores can obtain their dietary energy and nutrient requirements from a mixed diet of plant and animal origin and will occasionally include other sources of nourishment in their diet such as fungi, algae, and bacteria. Omnivory can be characterized as behavioral and/or physiological, based on the spatial and temporal availability of foodstuff, combined with an organism’s intrinsic ability to obtain energy and other nutrients from ingested material. Certain omnivorous species will demonstrate specific anatomical, physiological, and/or behavioral specializations and adaptations for the acquisition and processing of specific foodstuff.

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References

  • Bredin, I. P., Skinner, J. D., & Mitchell, G. (2008). Can osteophagia provide giraffes with phosphorus and calcium? Onderstepoort Journal of Veterinary Research, 75(1), 1–9.

    Article  Google Scholar 

  • Burin, G., Kissling, W. D., Guimarães, P. R., Şekercioğlu, C. H., & Quental, T. B. (2016). Omnivory in birds is a macroevolutionary sink. Nature Communications, 7, 11250. https://doi.org/10.1038/ncomms11250.

    Article  PubMed  PubMed Central  Google Scholar 

  • Càceres, I., Esteban-Nadal, M., Bennàsar, M., Marìn Monfort, M. D., Pesquero, M. D., & Fernàndez-Jalvo, Y. (2013). Osteophagia and dental wear in herbivores: Actualistic data and archaeological evidence. Journal of Archaeological Science, 40, 3105–3116.

    Article  Google Scholar 

  • Cantalapiedra, J. L., Fitzjohn, R. G., Kuhn, T. S., Fernandez, M. H., DeMiguel, D., Azanza, B., Morales, J., & Moores, A. O. (2014). Dietary innovations spurred the diversification of ruminants during the Caenozoic. Proceedings of the Biological Sciences, 281, 20132746.

    Article  Google Scholar 

  • Clauss, M., Lischke, A., & Botha, H. (2015). Carcass consumption by domestic rabbits (Oryctolagus cuniculus). European Journal of Wildlife Research, 62(1), 143–145.

    Article  Google Scholar 

  • Cruz, J., Sutherland, D. R., Martin, G. R., & Leung, L. K. (2012). Are smaller subspecies of common brushtail possums more omnivorous than larger ones? Austral Ecology, 37, 893–902.

    Article  Google Scholar 

  • De Cuyper, A., Clauss, M., Carbone, C., Codron, C., Cools, A., Hesta, M., & Janssens, G. P. J. (2019). Predator size and prey size-gut capacity ratios determine kill frequency and carcass production in terrestrial carnivorous mammals. Oikos, 128, 13–22.

    Article  Google Scholar 

  • Ferrell, F. (1984). Preference for sugars and non-nutritive sweeteners in young beagles. Neuroscience and Biobehavioural Reviews, 8, 199–203.

    Article  Google Scholar 

  • Grant, P. R., & Grant, B. R. (2006). Evolution of character displacement in Darwin’s finches. Science, 313, 224–226.

    Article  Google Scholar 

  • Hampton, C. (2002). Carnivorous giraffe, or natural phenomenon? Endangered Wildlife, 40, 22–25.

    Google Scholar 

  • Hart, B. L. (2008). Why do dogs and cats eat grass? Veterinary Medicine, 103, 648–649.

    Google Scholar 

  • Hume, I. D. (2002). Digestive strategies of mammals. Acta Zoologica Sinica, 48(1), 1–19.

    Google Scholar 

  • Kissling, W. D., Sekercioglu, C. H., & Jetz, W. (2012). Bird dietary guild richness across latitudes, environments and biogeographic regions. Global Ecology and Biogeography, 21, 328–340.

    Article  Google Scholar 

  • Landry, S. M., & Van Kruiningen, H. J. (1979). Food habits of feral carnivores: A review of stomach contents analysis. Journal of the American Animal Hospital Association, 15, 775–782.

    Google Scholar 

  • Li, X., Li, W., Wang, H., Bayley, D. L., Cao, J., Reed, D. R., Bachmanov, A. A., Huang, L., Legrand-Defretin, V., Beauchamp, G. K., & Brand, J. G. (2006). Cats lack a sweet taste receptor. The Journal of Nutrition, 136(7 Suppl), 1932S–1934S.

    Article  Google Scholar 

  • McDonald, P., Edwards, R. A., Greenhalgh, J. F. D., Morgan, C. A., Sinclair, L. A., & Wilkinson, R. G. (2011). Animal nutrition (7th ed.). Harlow: Pearson.

    Google Scholar 

  • Meckel, L. A., McDaneld, C. P., & Wescott, D. J. (2017). White-tailed deer as a taphonomic agent: Photographic evidence of white-tailed deer gnawing on human bone. Journal of Forensic Sciences, 63(1), 292–294.

    Article  Google Scholar 

  • Mori, E., Lovari, S., & Mazza, G. (2018). The bone collector: Temporal patterns of bone-gnawing behaviour define osteophagia as a female prerogative in a large rodent. Behavioral Ecology and Sociobiology, 72(6), 1–7.

    Article  Google Scholar 

  • Motta-Junior, J. C., Talamoni, S. A., Lombardi, J. A., & Simokomaki, K. (1996). Diet of the maned wolf, Chrysocyon brachyurus, in central Brazil. Journal of Zoology, 240(2), 277–284.

    Article  Google Scholar 

  • Peers, M. J. L., Majchrzak, Y. N., Kinkolics, S. M., Boonstra, R., & Boutin, S. (2018). Scavenging by snowshoe hares (Lepus americanus) in Yukon, Canada. Northwestern Naturalist, 99(3), 232–235.

    Article  Google Scholar 

  • Preen, A. (1995). Diet of dugongs: Are they omnivores? Journal of Mammalogy, 76(1), 163–171.

    Article  Google Scholar 

  • Price, S. A., Hopkins, S. S. B., Smith, K. K., & Roth, V. L. (2012). Tempo of trophic evolution and its impact on mammalian diversification. Proceedings of the National Academy of Sciences of the United States of America, 109, 7008–7012.

    Article  Google Scholar 

  • Wilson, D. S., & Yoshimura, J. (1994). On the coexistence of specialists and generalists. The American Naturalist, 144, 692–707.

    Article  Google Scholar 

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Correspondence to Jacqueline Boyd .

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Boyd, J. (2020). Omnivore. In: Vonk, J., Shackelford, T. (eds) Encyclopedia of Animal Cognition and Behavior. Springer, Cham. https://doi.org/10.1007/978-3-319-47829-6_880-1

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  • DOI: https://doi.org/10.1007/978-3-319-47829-6_880-1

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