Sea cucumber asexual reproduction in humans - The Scientific World Journal

Sea cucumbers are increasingly exploited for human consumption and for their curative properties, and many wild populations are now depleted or in danger of extinction. While aquaculture is seen as...

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Aspects of asexual reproduction in holothurians are discussed. Holothurians are critical as fishery and aquaculture notices and have high commercial value. The last review on holothurian asexual reproduction was published 18 years ago and included at best 8 species.

An analysis of the available literature shows that asexual reproduction has now old hat confirmed in 16 holothurian species. Five additional species are and most likely capable of fission. The recent discovery of mod fissiparous holothurian species indicates that this reproduction mode is more widespread in Holothuroidea than formerly believed.

New data about the history of the discovery of asexual reproduction in holothurians, features of fission, and regeneration of anterior and posterior fragments are described here. Asexual reproduction is obviously controlled by the integrated systems of the organism, chiefly the nervous system. Special molecular mechanisms appear to determine the location where fission occurs on the anterior-posterior axis of the body. Alteration of the connective tissue strength of the corps wall may play an high-ranking role during fission of holothurians.

  • Severe overfishing of sea cucumbers has occurred in most countries of the world.
  • The last review on holothurian asexual reproduction was published 18 years ago and included only 8 species....
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However, cloning by transverse fission is an important means of maintenance of population size in several echinoderm species Emson and Wilkie, ; Ottesen and Lucas, including sediment-feeding sea cucumbers of the order aspidochirotida Chao et al. Reproductive biology of the holothurians from the major communities for the New Caledonia lagoon. All descriptions are based only on analyses of fragments collected in nature, and, thus, the duration of regeneration remains unknown.

This pattern showing some dominant clones with transient rare ones has already been highlighted in Z. Most likely, the larvae that were under the most suitable habitat conditions were stimulated to asexually reproduce.

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PDF | Aspects of asexual reproduction in holothurians are discussed. The last review on holothurian asexual reproduction was published 18 years ago and included During dedi erentiation, the enterocytes lose many. Request PDF on...