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A Guide to Galago Diversity: Getting a Grip on How Best to Chew Gum

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The Evolution of Exudativory in Primates

Abstract

Disputes over galago taxonomy have meant that studies often use ­different names for identical populations, making comparative analysis difficult for the untrained researcher. A main objective of this study was to assess whether hand and foot pad morphology, nail shape and toothscraper structure reveal adaptations to exudate eating and show differences which reflect taxonomy in order to identify species. A total of 714 museum specimens were examined between May and July 2007, revealing six pads on each hand and foot which vary in shape and orientation across taxa. Three nail shapes and two variations in toothscraper position were identified. The results indicate that variance in pad size reflects species boundaries and shows adaptations to allow access to large-diameter substrates. No consistent dental variation was identified when comparing species with high and low proportions of exudates in their diet, although the highly gummivorous Euoticus elegantulus possessed a relatively longer, more procumbent toothscraper than other species.

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References

  • Ambrose, L. (2003). Three Acoustic Forms of Allen’s Galagos (Primates; Galagonidae) in the Central African Region. Primates 44, 25–39.

    PubMed  Google Scholar 

  • Anderson, M. J. (1999). The Use of Hand Morphology in the Taxonomy of Galagos. Primates 40(3), 469–478.

    Article  Google Scholar 

  • Anderson, M. J., Ambrose, L., Bearder, S. K., Dixson, A. F. and Pullen, S. (2000). Intraspecific Variation in the Vocalisations and Hand Pad Morphology of Southern Lesser Bush Babies (Galago moholi): A Comparison with G. senegalensis. International Journal of Primatology 21(3), 537–555.

    Article  Google Scholar 

  • Bearder, S. K. (1999). Physical and Social Diversity Among Nocturnal Primates: A New View Based on Long Term Research. Primates 40(1), 267–282.

    Article  PubMed  CAS  Google Scholar 

  • Bearder, S. K. and Martin, R. D. (1980). Acacia Gum and Its Use by Bushbabies, Galago senegalensis (Primates Lorisidae). International Journal of Primatology 1, 103–128.

    Article  Google Scholar 

  • Buettner-Janusch, J. and Andrew, R. J. (1962). The Use of Incisors by Primates in Grooming. American Journal of Physical Anthropology 20, 127–129.

    Article  PubMed  CAS  Google Scholar 

  • Burrows, A. M. and Nash, L. T. (2007). Introduction: Evolution, Morphology, and Behaviour of Lorisoid Primates. American Journal of Primatology 69, 1–5.

    Article  Google Scholar 

  • Cartmill, M. (1974). Pads and Claws in Arboreal Locomotion. In: Jenkins, F. A. Jr. (ed.) Primate Locomotion, 45–84. New York: Academic Press Inc.

    Google Scholar 

  • Cartmill, M. (1979). The Volar Skin of Primates: Its Frictional Characteristics and Their Functional Significance. American Journal of Physical Anthropology 50, 497–510.

    Article  PubMed  CAS  Google Scholar 

  • Charles-Dominique, P. (1977). Ecology and Behaviour of Nocturnal Prosimians. London: Duckworth.

    Google Scholar 

  • Charles-Dominique, P. and Petter, J.J. (1980). Ecology and social life of Phaner furcifer. In: Charles-Dominique, P. (ed.) Nocturnal Malagasy Primates, 75–96. New York: Academic Press Inc.

    Google Scholar 

  • Clark, A. B. (1982). Scent Marks as Social Signals in Galago crassicaudatus: I. Sex and Reproductive Status as Factors in Signals and Responses. Journal of Chemical Ecology 8, 1133–1151.

    Article  Google Scholar 

  • Courtenay, D. O. and Bearder, S. K. (1989). The Taxonomic Status and Distribution of Bushbabies in Malawi with Emphasis on the Significance of Vocalisations. International Journal of Primatology 10(1), 17–34.

    Article  Google Scholar 

  • Eaglen, R. H. (1986). Morphometrics of the Anterior Dentition in Strepsirhine Primates. American Journal of Physical Anthropology 71, 185–201.

    Article  PubMed  CAS  Google Scholar 

  • Gause, G. F. (1934). The Struggle for Existence. Baltimore, MD: Williams and Wilkins.

    Book  Google Scholar 

  • Grubb, P., Butynski, T. M., Oates, J. F., Bearder, S. K., Disotell, T. R., Groves, C. and Struhsaker, T. (2003) Assessment of the Diversity of African Primates. International Journal of Primatology 24(6), 1301–1357.

    Article  Google Scholar 

  • Kingdon, J. (2003). The Kingdon Field Guide to African Mammals, New Edition. London: A&C Black.

    Google Scholar 

  • Martin, R. D. (1972). Adaptive Radiation and Behaviour of the Malagasy Lemurs. Philosophical Transactions of the Royal Society of London 264, 295–352.

    Article  PubMed  CAS  Google Scholar 

  • Mayr, E. (1963). Animal Species and Evolution. Cambridge: Harvard University Press.

    Google Scholar 

  • Nash, L. T., Bearder, S. K. and Olson, T. R. (1989). Synopsis of Galago Species Characteristics. International Journal of Primatology 10(1), 57–80.

    Article  Google Scholar 

  • Schluter, D. (1996). Ecological Causes of Adaptive Radiation. The American Naturalist 148, S40–S64.

    Article  Google Scholar 

  • Soligo, C. and Martin, R. D. (2006). Adaptive Origins of Primates Revisited. Journal of Human Evolution 50, 414–430.

    Article  PubMed  Google Scholar 

  • Taylor, A. B. and Vinyard, C. J. (2004). Comparative Analysis of Masseter Fiber Architecture in Tree-Gouging (Callithrix jacchus) and Non-Gouging (Saguinus oedipus) Callitrichids. Journal of Morphology 261(3), 276–285.

    Article  PubMed  Google Scholar 

  • Thorndike, E. (1968).A Microscopic Study of the Marmoset Claw and Nail. American Journal of Physical Anthropology 28, 247–262.

    Article  PubMed  CAS  Google Scholar 

  • Van Valen, L. (1976). Ecological Species, Multispecies, and Oaks. Taxon 25(2/3), 233–239.

    Article  Google Scholar 

  • Viguier, B. (2004). Functional Adaptations in the Craniofacial Morphology of Malagasy Primates: Shape Variations Associated with Gummivory in the Family Cheirogaleidae. Annals of Anatomy 186, 495–501.

    Article  PubMed  Google Scholar 

  • Williams, S. H., Wall, C. E., Vinyard, C. J. and Hylander, W. L. (2002). A Biomechanical Analysis of Skull Form in Gum-Harvesting Galagids. Folia Primatologica 73, 197–209.

    Article  Google Scholar 

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Acknowledgments

Many thanks to Dr. Nekaris for her invaluable help, and to the Powell-Cotton (Kent) and Natural History (London) museums, in particular Malcolm Harman and Paula Jenkins.

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Correspondence to Isobel R. Stephenson .

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Stephenson, I.R., Bearder, S.K., Donati, G., Karlsson, J. (2010). A Guide to Galago Diversity: Getting a Grip on How Best to Chew Gum. In: Burrows, A., Nash, L. (eds) The Evolution of Exudativory in Primates. Developments in Primatology: Progress and Prospects. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-6661-2_12

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