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Homology of arthropod anterior appendages revealed by Hox gene expression in a sea spider

Author

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  • Muriel Jager

    (Université Pierre et Marie Curie-Paris 6, UMR 7138 CNRS UPMC MNHN ENS IRD, Case 05)

  • Jérôme Murienne

    (Université Pierre et Marie Curie-Paris 6, UMR 7138 CNRS UPMC MNHN ENS IRD, Case 05
    Muséum National d'Histoire Naturelle, UMR 5202 CNRS, Département Systématique et Evolution, case 50
    Evolutionary Biology, University of Konstanz)

  • Céline Clabaut

    (Université Pierre et Marie Curie-Paris 6, UMR 7138 CNRS UPMC MNHN ENS IRD, Case 05
    Muséum National d'Histoire Naturelle, UMR 5202 CNRS, Département Systématique et Evolution, case 50
    Evolutionary Biology, University of Konstanz)

  • Jean Deutsch

    (Université Pierre et Marie Curie-Paris 6, UMR 7622 CNRS UPMC)

  • Hervé Le Guyader

    (Université Pierre et Marie Curie-Paris 6, UMR 7138 CNRS UPMC MNHN ENS IRD, Case 05)

  • Michaël Manuel

    (Université Pierre et Marie Curie-Paris 6, UMR 7138 CNRS UPMC MNHN ENS IRD, Case 05)

Abstract

Talking heads The arthropods are a good example of how evolution shapes different body forms from a single ancestral species. They consist of a series of head and body segments, each with different appendages — claws, antennae, wings, legs. A recent Nature paper offered a new explanation of some apparent anomalies. The curious arthropods called sea spiders, it was suggested, have appendages on the first head segment, providing a link with the arthropod ancestor. That work was based on neuroanatomical observations, but now, using molecular techniques, Jager et al. show that sea spiders, like all other living arthropods, have lost the first head appendages seen in fossils.

Suggested Citation

  • Muriel Jager & Jérôme Murienne & Céline Clabaut & Jean Deutsch & Hervé Le Guyader & Michaël Manuel, 2006. "Homology of arthropod anterior appendages revealed by Hox gene expression in a sea spider," Nature, Nature, vol. 441(7092), pages 506-508, May.
    • Handle: RePEc:nat:nature:v:441:y:2006:i:7092:d:10.1038_nature04591
    DOI: 10.1038/nature04591
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