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Seed dispersal

Directed deterrence by capsaicin in chillies

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Abstract

The primary function of ripe, fleshy fruit is to facilitate seed dispersal by attracting consumers1,2, yet many fruits contain unpleasant-tasting chemicals that deter consumption by vertebrates3. Here we investigate this paradox in the chilli (Capsicum) and find that capsaicin, the chemical responsible for the fruit's peppery heat4, selectively discourages vertebrate predators without deterring more effective seed dispersers.

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Figure 1: The effects of capsaicin on consumers and of consumers on chillies.

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Author information

Author notes

  1. Joshua J. Tewksbury

    Present address: Department of Zoology, University of Florida, Box 118525, Gainesville, Florida, 32611-8525, USA

Authors and Affiliations

  1. Center for Sustainable Environments, Northern Arizona University, PO Box 5765, Flagstaff, 86011-5765, Arizona, USA

    Joshua J. Tewksbury & Gary P. Nabhan

  2. Department of Biological Sciences, University of Montana, Missoula, Montana, 59812, USA

    Joshua J. Tewksbury

Authors
  1. Joshua J. Tewksbury
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  2. Gary P. Nabhan
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Correspondence to Joshua J. Tewksbury.

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Tewksbury, J., Nabhan, G. Directed deterrence by capsaicin in chillies. Nature 412, 403–404 (2001). https://doi.org/10.1038/35086653

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