Paraspecies

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A paraspecies (a

extinct.[1] Geographically widespread species that have given rise to one or more daughter species as peripheral isolates without themselves becoming extinct (i.e. through peripatric speciation) are examples of paraspecies.[2]

Paraspecies are expected from evolutionary theory (Crisp and Chandler, 1996), and are empirical realities in many terrestrial and aquatic taxa.[3][4][5][6][7][8][9][10][11][12]

Examples

  • A well-documented example of a living mammal species that gave rise to another living species is the evolution of the polar bear from the brown bear.[13][14]
  • An example of a living reptile paraspecies is New Zealand's North Island tuatara
    Cordilleran flycatcher.[16][17]

See also

  • Cladogenesis
  • Anagenesis, also known as "phyletic change", where no branching event occurred (or is known to have occurred)

Notes and references

  1. . Retrieved 28 June 2011.
  2. ^ Ackery, P. R., and R. I. Vane-Wright. 1984. Milkweed Butterflies: Their Cladistics and Biology. Cornell University Press, Ithaca. 425 pp.
  3. Thomomys
    ). Pp. 284-304 in: Speciation and its Consequences (D. Otte and J. A. Endler, eds.). Sinauer Associates, Sunderland.
  4. ^ Bell, M. A., and S. A. Foster. 1994. The Evolutionary Biology of the Threespine Stickleback. Oxford University Press, Oxford.
  5. .
  6. .
  7. .
  8. ^ "Publications".
  9. .
  10. .
  11. .
  12. .
  13. ^ "Polar bears related to extinct Irish bears, DNA study shows". Wikinews. 9 July 2011.
  14. PMID 21737280
    .
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  18. .