Widespread cloning in echinoderm larvae

Alexandra A. Eaves () and A. Richard Palmer
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Alexandra A. Eaves: Physiology and Cell Biology Group, University of Alberta
A. Richard Palmer: Systematics and Evolution Group, University of Alberta

Nature, 2003, vol. 425, issue 6954, 146-146

Abstract: Abstract Asexual reproduction by free-living invertebrate larvae is a rare and enigmatic phenomenon and, although it is known to occur in sea stars1,2,3,4 and brittle stars5,6, it has not been detected in other echinoderms despite more than a century of intensive study6,7. Here we describe spontaneous larval cloning in three species from two more echinoderm classes: a sea cucumber (Holothuroidea), a sand dollar and a sea urchin (Echinoidea). Larval cloning may therefore be an ancient ability of echinoderms and possibly of deutero-stomes — the group that includes echinoderms, acorn worms, sea squirts and vertebrates.

Date: 2003
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DOI: 10.1038/425146a

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