Platonova		Contents		Rev: 02/21/2024
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Platonova Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Leptosomatidae Menu		Feeding		References
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Classification:

Enoplea

  Enoplia
        Enoplida

            Ironina

                Ironoidea

                     Leptosomatidae

Synonchinae

Platonova  Mordukhovich, Semenchenko, Fadeeva & Zograf,  2019

Type speciesd of the genus: Platanova magna Mordukhovich, Semenchenko, Fadeeva & Zograf,  2019

Note: The genus name honors Tatyana Alekseevna Platonova, a Russian nematologist who studied the family Leptosomatidae intensively.

    Synonyms:

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Morphology and Anatomy:

 Genus Platonova differs from other known Synonchinae by:

•  the tail shape - conical anteriorly, filiform posteriorly
•  division of pharyngostome into 2 distinct parts,
• one dorsal tooth in the anterior part of pharyngostome,
• 6 cuticular supports and microonchia in the posterior part of pharyngostome.

Characteristics:

• Very large nematodes.
• Cephalic capsule relatively long, interlobular grooves wide. Three well-developed lips.
• Amphideal fovea large, pocket-shaped, located in lateral grooves.
• Six small inner labial papillae (2 on each lip); six outer labial setae and four cephalic setae in one circle, relatively equal in length. Short post-amphideal setae present.
• Cheilostome with three mandibular ridges, odontia present.
• Single dorsal onchium in the anterior part of pharyngostome. The posterior part of pharyngostome is reinforced with 6 cuticular thickeningss (two on each of the dorsal and two ventrosublateral sectors), with contains microonchia.
• Tail conical anteriorly, filiform posteriorly.

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Distribution:

Deep-sea nematodes; species of the family Leptosomatidae are reporterd to occur frequently in macrobenthic samples from the North-Western Pacific ocean. Reportd at depths of 3300 to 4500 meters below sea level in the Kuril–Kamchatka Trench and adjacent areas.

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Feeding:

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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:

Mordukhovich, V.V., Semenchenko, A.A., Fadeeva, N.P., Zograf, J.K. 2019. One new genus and two new free-living deep-sea nematode species with discussion of phylogeny of the family Leptosomatidae Filipjev, 1916. Progress in Oceanography, 178: doi.org/10.1016/j.pocean.2019.102160

Platonova, T.A., 1970. On the Taxonomy of the Leptosomatidae (Nematoda) of the Mediterranean Sea and of the Adjacent Waters of the Atlantic [O sistematike Leptosomatidae (Nematoda) Sredizemnogo Morya i prilezhashchikh vod Atlantiki]. Zoologicheskii Zhurnal 49:1298-1305.

Platonova, T.A., 1976. Lower Enoplida (free-living marine nematodes) of the seas of the USSR (in Russian). Issledovaniya Fauny Morei (Nematody i ikh rol' v meiobentose) 15:3-164.

Platonova, T.A., 1979. Structure of the head end and system of the subfamily Synonchinae (Nematoda, Enoplida, Leptosomatidae) (Struktura golovnogo kontsa i sistema podsemeistva Synonchinae (Nematoda, Enoplida, Leptosomatidae)). Zoologicheskii Zhurnal 58 1117-1129.

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Copyright © 1999 by Howard Ferris.
Revised: February 21, 2024.