Euterranova		Contents		Rev: 08/24/2024
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Euterranova Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Anisakidae Menu		Feeding		References
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Classification:

Chromadorea

Chromadoria

Rhabditida

Spirurina

Ascaridoidea

                         Anisakidae

                          Euterranova Moravec & Justine, 2020

Nematodes recovered from three species of sharks off the coast of New Caledonia had characteristics previously described for the anisakid nematode genus Terranova Leiper & Atkinson, 1914..  However,  since the type species of thet genus has been designated species inquirenda, the genus Terranova is no longer considered valid.  Based on their characteristics, the nematodes were assigned to two new genera: Euterranova and Neoterranova. The new genera differ mainly in labial structures. (Moravec and Justine, 2020).

Type species of the genus Euterranova is E. dentiduplicata Moravec & Justine, 2020

    Synonyms:
     

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Morphology and Anatomy:

• Rather large nematodes (around 30mm length) with slightly transversely striated cuticle.
• Lips with narrow, comb-like dentigerous ridges formed by two prominent lateral teeth and several medial denticles between them
• Each lip provided with small, bilobed median elevation armed with two prominent lateral teeth and one row of several median denticles between them; additional row of median denticles may be present somewhat posterior to anterior row.
• Interlabia absent.
• Dorsal lip with two double papillae; each subventral lip with one double papilla and lateral amphid.
• Narrow lateral alae present.
• Deirids well developed, near nerve ring level.
• Esophagus long and narrow. Ventriculus elongate, without ventricular appendix. Intestinal caecum present.
• Excretory pore between base of subventral lips.
• Tail conical; tip without ornamentation.
• Parasites of sharks and reptiles.

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Distribution:

Described from three species of sharks, Galeocerdo cuvier, Triaenodon obesus (both Carcharhinidae, Carcharhiniformes) and Stegostoma fasciatum (Stegostomatidae, Orectolobiformes) from New Caledonian waters (Moravec and Justine, 2020).

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Feeding:

Parasites of the digestive system of sharks

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Biology and Ecology:

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Life Cycle:

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Ecosystem Functions and Services:

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Management:

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References:

Moravec, F. and Justine, J-L.. 2020. Erection of Euterranova n. gen. and Neoerranova n. gen. (Nematoda, Anisakidae), with the description of E. dentiduplicata n. sp. and new records of two other anisakid nematodes from sharks off New Caledonia. Parasite 27:58; doi: 10.1051/parasite/2020053

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Copyright © 1999 by Howard Ferris.
Revised: August 24, 2024.