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Rapid evolution to terrestrial life in Jamaican crabs

Author

Listed:
  • Christoph D. Schubart

    (Fakultät für Biologie I, VHF, Universität Bielefeld
    University of Southwestern Louisiana)

  • Rudolf Diesel

    (Fakultät für Biologie I, VHF, Universität Bielefeld
    Max-Planck-Instit fr Verhaltensphysiologie)

  • S. Blair Hedges

    (Pennsylvania State University)

Abstract

Crabs of the family Grapsidae are abundant organisms in most intertidal communities. However, relatively few species live in complete independence of the sea1. Of those species that do, Jamaica's nine endemic species of land crabs are unique in their exceptional adaptations to terrestrial life, which include the only active brood-care for larvae and juveniles known in crabs2,3,4,5,6. These adaptations, and the morphological similarity to a group of southeast Asian land-dwelling crabs, have raised the question of the number and age of land invasions of the Jamaican species. Here we present molecular evidence that Jamaican land crabs represent a single adaptive radiation from a marine ancestor that invaded terrestrial habitats only 4 million years (Myr) ago. A Late-Tertiary origin has also been found for lizards and frogs of Jamaica7,8,9 and probably reflects the Mid-Tertiary inundation of that island10.

Suggested Citation

  • Christoph D. Schubart & Rudolf Diesel & S. Blair Hedges, 1998. "Rapid evolution to terrestrial life in Jamaican crabs," Nature, Nature, vol. 393(6683), pages 363-365, May.
    • Handle: RePEc:nat:nature:v:393:y:1998:i:6683:d:10.1038_30724
    DOI: 10.1038/30724
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