Tylenchorhynchus dubius (Nematoda) - Saugen an Wurzeln von Sämlingen (Rübsen)

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Video in TIB AV-Portal: Tylenchorhynchus dubius (Nematoda) - Saugen an Wurzeln von Sämlingen (Rübsen)

Formal Metadata

Tylenchorhynchus dubius (Nematoda) - Saugen an Wurzeln von Sämlingen (Rübsen)
Alternative Title
Tylenchorhynchus dubius (Nematoda) - Feeding on Roots of Seedlings (Rapeseed)
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IWF Signature
E 1902
Release Date
Silent film
Production Year

Technical Metadata

IWF Technical Data
Film, 16 mm, 58 m ; SW, 5 1/2 min

Content Metadata

Subject Area
Fadenwurm. Die Zellwand der Rhizodermiszelle wird mit schnellen, unregelmäßigen Stößen des Mundstachels durchbohrt. Speichelabgabe; Zytoplasmagranula werden vor dem Stachel abgebaut und durch regelmäßige, schnelle Pulsationen der Pumpe im Mittelbulbus des Ösophagus aufgesaugt.
A complete feeding process of Tylenchorhynchus dubius on seedling roots of rapeseed consists of five phases: probing, puncturing of the cell wall, salivation, ingestion and departure from the feeding site. The film shows characteristic details of the phases that follow probing. The wall of epidermal cells and root hairs is punctured with rapid and irregular stylet thrusts. During salivation salivary granules flow continuously from the site of synthesis, in front of the dorsal gland-cell nucleus, through the gland duct towards the gland reservoir. Food is ingested by steady and very rapid pulsations of the metacorporeal pump. Granular constituents of the cytoplasm are not drawn into the stylet.
Keywords Wurzelnematoden Wurm / Fadenwurm Rübsen Nematoden / Wurzelnematoden Fadenwurm Wurzelhaar Tylenchorhynchus dubius Saugen / Nemathelminthes Nahrungsaufnahme / Nemathelminthes Tylenchorhynchus dubius ingestion / Nemathelminthes nematode root hair suckling / Nemathelminthes threadworm Encyclopaedia Cinematographica