Reproduction: Widespread cloning in echinoderm larvae

  title={Reproduction: Widespread cloning in echinoderm larvae},
  author={Alexandra A. Eaves and A. Richard Palmer},
Asexual reproduction by free-living invertebrate larvae is a rare and enigmatic phenomenon and, although it is known to occur in sea stars and brittle stars, it has not been detected in other echinoderms despite more than a century of intensive study. 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… 

Predators Induce Cloning in Echinoderm Larvae

This research shows that larvae of the sand dollar Dendraster excentricus also clone in response to cues from predators, suggesting an advantage against visual predators.

Culturing echinoderm larvae through metamorphosis.

Abrupt Change in Food Environment Induces Cloning in Plutei of Dendraster excentricus

Results indicate that a change in food concentration can induce cloning in plutei, and demonstrate that anterior autotomization does occur in 4- to 6-arm pluteo.

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Predator-Induced Larval Cloning in the Sand Dollar Dendraster excentricus: Might Mothers Matter?

  • D. Vaughn
  • Environmental Science, Biology
    The Biological Bulletin
  • 2009
The hypothesis that cloning in D. excentricus plutei is maternally influenced by mothers is tested and reduced larval size was a uniform response to fish mucus and did not indicate an effect of mothers.

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Cloning by Ophiuroid Echinoderm Larvae.

  • E. Balser
  • Environmental Science, Biology
    The Biological bulletin
  • 1998
Asexually produced secondary larvae of O. aculeata and an unidentified species of ophiuroid undergo metamorphosis, settle to the benthos, and initiate a tertiary larval generation, indicating that cloned larvae could be added to the population as long as environmental conditions could support a planktonic existence.

Identification of Asteroid Genera With Species Capable of Larval Cloning

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The nesting of the pterobranchs within the enteropneusts dramatically alters the view of the evolution of the chordate body plan and suggests that the ancestral deuterostome more closely resembled a mobile worm-like enteropNEust than a sessile colonial pterOBranch.

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