Taxonomic description and 3D modelling of a new species of myzostomid (Annelida, Myzostomida) associated with black corals from Madagascar

Terrana, Lucas; Eeckhaut, Igor

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Terrana, Lucas; Eeckhaut, Igor

2017 • In Zootaxa

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https://hdl.handle.net/20.500.12907/38826

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28610126

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Abstract :

[en] Eenymeenymyzostoma nigrocorallium n. sp. is the first species of myzostomid worm associated with black corals to be described. Endoparasitic specimens of E. nigrocorallium were found associated with three species of antipatharians on the Great Reef of Toliara. Individuals inhabit the gastrovascular ducts of their hosts and evidence of infestation is, most of the time, not visible externally. Phylogenetic analyses based on 18S rDNA, 16S rDNA and COI data indicate a close relation to Eenymeenymyzostoma cirripedium, the only other species of the genus. The morphology of E. nigrocorallium is very unusual compared to that of the more conventional E. cirripedium. The new species has five pairs of extremely reduced parapodia located on the body margin and no introvert, cirri or lateral organs. Individuals are hermaphroditic, with the male and female gonads both being located dorsally in the trunk. It also has a highly developed parenchymo-muscular layer on the ventral side, and the digestive system lies in the middle part of the trunk. A three-dimensional digital model of this worm's body plan has been constructed whereby the external morphology and in toto views of the observed organ systems (nervous, digestive and reproductive) can be viewed on-screen: http://doi.org/10.13140/RG.2.2.17911.21923.

Disciplines :

Phytobiology (plant sciences, forestry, mycology...)

Author, co-author :

Terrana, Lucas ; Université de Mons > Faculté des Sciences > Biologie des Organismes Marins et Biomimétisme

Eeckhaut, Igor ; Université de Mons > Faculté des Sciences > Biologie des Organismes Marins et Biomimétisme

Language :

English

Title :

Taxonomic description and 3D modelling of a new species of myzostomid (Annelida, Myzostomida) associated with black corals from Madagascar

Publication date :

20 March 2017

Journal title :

Zootaxa

ISSN :

1175-5326

Publisher :

Magnolia Press, New Zealand

Peer reviewed :

Peer Reviewed verified by ORBi

Research unit :

S864 - Biologie des Organismes Marins et Biomimétisme

Research institute :

R100 - Institut des Biosciences

Available on ORBi UMONS :

since 18 January 2019

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