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Evolutionary biology

Speciation undone


Hybridization can cause two species to fuse into a single population. New observations suggest that two species of Darwin's finches are hybridizing on a Galapagos island, and that a third one has disappeared through interbreeding.

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Figure 1: Invasion, evolution and loss.

A–C: P. R. Grant & B. R. Grant


  1. Dobzhansky, T. Genetics and the Origin of Species 350 (Columbia Univ. Press, 1941).

    Google Scholar 

  2. Kleindorfer, S. et al. Am. Nat. 183, 325–341 (2014).

    Article  Google Scholar 

  3. Lack, D. Darwin's Finches (Cambridge Univ. Press, 1947).

    Google Scholar 

  4. McKinnon, J. S. & Taylor, E. B. Nature 482, 313–314 (2012).

    CAS  ADS  Article  Google Scholar 

  5. Grant, P. R. Ecology and Evolution of Darwin's Finches (Princeton Univ. Press, 1999).

    Google Scholar 

  6. Bowman, R. I. in Patterns of Evolution in Galapagos Organisms (eds Bowman, R. I., Berson, M. & Leviton, A. E.) 237–537 (Am. Assoc. Adv. Sci., Pacif. Div., 1983).

    Google Scholar 

  7. Grant, P. R. & Grant, B. R. 40 Years of Evolution (Princeton Univ. Press, in the press).

  8. Grant, P. R., Grant, B. R., Petren, K. & Keller, L. F. Biol. Conserv. 122, 499–503 (2005).

    Article  Google Scholar 

  9. Causton, C. E. et al. Ann. Entomol. Soc. Am. 99, 121–143 (2006).

    Article  Google Scholar 

  10. Seehausen, O., Takimoto, G., Roy, D. & Jokela, J. Mol. Ecol. 17, 30–44 (2008).

    Article  Google Scholar 

  11. Vonlanthen, P. D. et al. Nature 482, 357–362 (2012).

    CAS  ADS  Article  Google Scholar 

  12. Seehausen, O. Proc. R. Soc. B 273, 1987–1998 (2006).

    Article  Google Scholar 

  13. Grant, P. R. & Grant, B. R. How and Why Species Multiply (Princeton Univ. Press, 2008).

    MATH  Google Scholar 

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Correspondence to Peter R. Grant or B. Rosemary Grant.

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Grant, P., Grant, B. Speciation undone. Nature 507, 178–179 (2014).

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