Sympatric speciation in palms on an oceanic island (original) (raw)

Nature volume 441, pages 210–213 (2006)Cite this article

Abstract

The origin of species diversity has challenged biologists for over two centuries. Allopatric speciation, the divergence of species resulting from geographical isolation, is well documented1. However, sympatric speciation, divergence without geographical isolation, is highly controversial2. Claims of sympatric speciation must demonstrate species sympatry, sister relationships, reproductive isolation, and that an earlier allopatric phase is highly unlikely1. Here we provide clear support for sympatric speciation in a case study of two species of palm (Arecaceae) on an oceanic island. A large dated phylogenetic tree shows that the two species of Howea, endemic to the remote Lord Howe Island, are sister taxa and diverged from each other well after the island was formed 6.9 million years ago3. During fieldwork, we found a substantial disjunction in flowering time that is correlated with soil preference. In addition, a genome scan4,5 indicates that few genetic loci are more divergent between the two species than expected under neutrality, a finding consistent with models of sympatric speciation involving disruptive/divergent selection2. This case study of sympatric speciation in plants provides an opportunity for refining theoretical models on the origin of species, and new impetus for exploring putative plant and animal examples on oceanic islands.

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References

  1. Coyne, J. A. & Orr, H. A. Speciation (Sinauer Associates, Sunderland, Massachusetts, 2004)
    Google Scholar
  2. Gavrilets, S. Models of speciation: what have we learned in 40 years? Evolution 57, 2197–2215 (2003)
    Article PubMed Google Scholar
  3. McDougall, I., Embleton, B. J. J. & Stone, D. B. Origin and evolution of Lord Howe Island, southwest Pacific Ocean. J. Geol. Soc. Aust. 28, 155–176 (1981)
    Article CAS Google Scholar
  4. Luikart, G., England, P., Tallmon, D., Jordan, S. & Taberlet, P. The power and promise of population genomics: from genotyping to genome typing. Nature Rev. Genet. 4, 981–994 (2003)
    Article CAS PubMed Google Scholar
  5. Beaumont, M. Adaptation and speciation: what can _F_ST tell us? Trends Ecol. Evol. 20, 435–440 (2005)
    Article PubMed Google Scholar
  6. Turelli, M., Barton, N. H. & Coyne, J. A. Theory and speciation. Trends Ecol. Evol. 16, 330–343 (2001)
    Article CAS PubMed Google Scholar
  7. Dieckmann, U. & Doebeli, M. On the origin of species by sympatric speciation. Nature 400, 354–357 (1999)
    Article ADS CAS PubMed Google Scholar
  8. Higashi, M., Takimoto, G. & Yamamura, N. Sympatric speciation by sexual selection. Nature 402, 523–526 (1999)
    Article ADS CAS PubMed Google Scholar
  9. Kondrashov, A. S. & Kondrashov, F. A. Interactions among quantitative traits in the course of sympatric speciation. Nature 400, 351–353 (1999)
    Article ADS CAS PubMed Google Scholar
  10. Tregenza, T. & Butlin, R. K. Speciation without isolation. Nature 400, 311–312 (1999)
    Article ADS CAS PubMed Google Scholar
  11. Filchak, K. E., Roethele, J. B. & Feder, J. L. Natural selection and sympatric divergence in the apple maggot Rhagoletis pomonella. Nature 407, 739–742 (2000)
    Article ADS CAS PubMed Google Scholar
  12. Schliewen, U. K., Tautz, D. & Pääbo, S. Sympatric speciation suggested by crater lake cichlids. Nature 368, 629–632 (1994)
    Article ADS CAS PubMed Google Scholar
  13. Meyer, A., Kocher, T. D., Basasibwaki, K. P. & Wilson, A. C. W. Monophyletic origin of Lake Victoria cichlid fishes suggested by mitochondrial DNA sequences. Nature 347, 550–553 (1990)
    Article ADS CAS PubMed Google Scholar
  14. Bush, G. L. Sympatric speciation in animals, new wine in old bottles. Trends Ecol. Evol. 9, 285–288 (1994)
    Article CAS PubMed Google Scholar
  15. Sorenson, M. D., Sefc, K. M. & Payne, R. B. Speciation by host switch in brood indigo birds. Nature 424, 928–931 (2003)
    Article ADS CAS PubMed Google Scholar
  16. Pickard, J. Vegetation of Lord Howe Island. Cunninghamia 1, 133–265 (1983)
    Google Scholar
  17. Bailey, L. H. Howea in cultivation–the sentry palms. Gentes Herbarum 4, 189–198 (1939)
    Google Scholar
  18. Oliver, W. R. B. The vegetation and flora of Lord Howe Island. Trans. Proc. NZ Inst. 49, 94–161 (1917)
    Google Scholar
  19. Otto, S. P. & Whitton, J. Polyploid incidence and evolution. Annu. Rev. Genet. 34, 401–437 (2000)
    Article CAS PubMed Google Scholar
  20. Dransfield, J. et al. A new phylogenetic classification of the palm family, Arecaceae. Kew Bull. (in the press)
  21. Sanderson, M. J. A nonparametric approach to estimating divergence times in the absence of rate constancy. Mol. Biol. Evol. 14, 1218–1231 (1997)
    Article CAS Google Scholar
  22. Kishino, H., Thorne, J. L. & Bruno, W. J. Performance of a divergence time estimation method under a probabilistic model of rate evolution. Mol. Biol. Evol. 18, 352–361 (2001)
    Article CAS PubMed Google Scholar
  23. Burrett, C., Duhig, N., Berry, R. & Varne, R. Asian and south-western Pacific continental terranes derived from Gondwana, and their biogeographic significance. Aust. Syst. Bot. 4, 13–24 (1991)
    Article Google Scholar
  24. Beaumont, M. & Nichols, R. Evaluating loci for use in the genetic analysis of population structure. Proc. R. Soc. Lond. B 263, 1619–1626 (1996)
    Article ADS Google Scholar
  25. Via, S. Sympatric speciation in animals: the ugly duckling grows up. Trends Ecol. Evol. 16, 381–390 (2001)
    Article CAS PubMed Google Scholar
  26. Brooke, B. R., Woodroffe, C. D., Murray-Wallace, C. V., Heijnis, H. & Jones, B. G. Quaternary calcarenite stratigraphy on Lord Howe Island, southern Pacific Ocean and the record of coastal carbonate deposition. Quat. Sci. Rev. 22, 859–880 (2003)
    Article ADS Google Scholar
  27. Doebeli, M., Dieckmann, U., Metz, J. & Tautz, D. What we have also learned: adaptive speciation is theoretically plausible. Evolution 59, 691–695 (2005)
    PubMed Google Scholar
  28. Swofford, D. L. PAUP* 4.0: Phylogenetic Analysis Using Parsimony (*and Other Methods) (Sinauer Associates, Sunderland, Massachusetts, 2001)
    Google Scholar
  29. Vaughan, R. E. & Wiehe, P. O. Studies on the vegetation of Mauritius 1: a preliminary survey of the plant communities. J. Ecol. 25, 289–343 (1937)
    Article Google Scholar
  30. Berry, E. W. A palm from the mid-Cretaceous. Torreya 5, 30–33 (1905)
    Google Scholar

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Acknowledgements

We thank the Lord Howe Island Board, L. Wilson, T. Wilson, J. Smith and the New South Wales National Parks and Wildlife Service for facilitating this research; E. Brown and B. Conn for logistical support; T. Wilmot, R. Cowan, L. Llédo, I. Gallego and L. Hanson for research assistance; C. Lewis, J. Roncal, M. Thomas and M. Beaumont for sharing data and software; J. Dowe, the Flecker Botanic Garden and Royal Botanic Gardens, Sydney for providing material; J. Moat for GIS assistance; J. Dransfield, J.-C. Pintaud, S. Gavrilets, M. Chase, T. Barraclough and L. Rieseberg for discussions; and the Royal Botanic Gardens, Kew, the BAT Biodiversity Partnership, the European Commission and the Leverhulme Trust for funding.

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Authors and Affiliations

  1. Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3DS, UK
    Vincent Savolainen, Christian Lexer, James J. Clarkson, Maria V. Norup, Martyn P. Powell, David Springate & William J. Baker
  2. Centre for Evolutionary and Functional Ecology, UMR 5175, 1919 Route de Mende, 34293, Montpellier, cedex 5, France
    Marie-Charlotte Anstett
  3. PO Box 157, Lord Howe Island, New South Wales, 2898, Australia
    Ian Hutton
  4. Department of Systematic Botany, University of Aarhus, DK-8000, Aarhus C, Denmark
    Maria V. Norup
  5. Department of Ecology and Evolution, University of Lausanne, CH-1015, Lausanne, Switzerland
    Nicolas Salamin

Authors

  1. Vincent Savolainen
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  2. Marie-Charlotte Anstett
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  3. Christian Lexer
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  4. Ian Hutton
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  5. James J. Clarkson
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  6. Maria V. Norup
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  7. Martyn P. Powell
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  8. David Springate
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  9. Nicolas Salamin
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  10. William J. Baker
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Correspondence toVincent Savolainen.

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Competing interests

DNA sequences have been deposited at EBI under accession numbers AF453329–AF453381, AY348907–AY348944, AY543096–AY5443156, AJ830020–AJ831373, AJ971821–AJ971841 (see Supplementary Information). Reprints and permissions information is available at npg.nature.com/reprintsandpermissions. The authors declare no competing financial interests.

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Supplementary Notes

Supplementary notes with list of taxa, chronogram, phenological profiles and population statistics. (PDF 871 kb)

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Savolainen, V., Anstett, MC., Lexer, C. et al. Sympatric speciation in palms on an oceanic island.Nature 441, 210–213 (2006). https://doi.org/10.1038/nature04566

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