Fine Structure of the Head and Cervical Region of Ceramonema carinatum (Chromadorida : Ceramonematidae)

Structure of the head and cervical region of Ceramonema carinatum (Chromadorida: Ceramonematidae) was described from transmission electron microscopy of serial transverse and longitudinal sections of two females. An unbroken massive cortical layer encompasses the head, except where three thin liplet...

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Veröffentlicht in:Journal of nematology. - 1969. - 26(1994), 2 vom: 10. Juni, Seite 188-211
1. Verfasser: Stewart, A C (VerfasserIn)
Weitere Verfasser: Nicholas, W L
Format: Aufsatz
Sprache:English
Veröffentlicht: 1994
Zugriff auf das übergeordnete Werk:Journal of nematology
Schlagworte:Journal Article Ceramonema Nematoda buccal cavity cuticle muscles pharynx sensilla ultrastructure
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245 1 0 |a Fine Structure of the Head and Cervical Region of Ceramonema carinatum (Chromadorida  |b Ceramonematidae) 
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520 |a Structure of the head and cervical region of Ceramonema carinatum (Chromadorida: Ceramonematidae) was described from transmission electron microscopy of serial transverse and longitudinal sections of two females. An unbroken massive cortical layer encompasses the head, except where three thin liplets surround the mouth. A large flask-shaped buccal cavity, with simpler less dense cuticle identical with that of the pharynx, abuts the body cuticle just within the mouth. Myoepithelial ceils constituting the buccal and pharyngeal regions were described. Sixteen head sensilla, the amphids, and dorsal and ventral internal sensilla were identified and described, each with associated sheath and socket cells. Ultrasturcture of the head was compared with that of other nematodes. Arrangement of sensilla resembled that of Monhysterida and Rhabditida with some significant variations, such as prominent longitudinally arranged intracellular organelles containing many microtubules associated with the amphids. The buccal cavity was almost entirely pharyngeal in character. A well-developed system of structural fibrils and abundant hemidesmosomes were notable features 
650 4 |a Journal Article 
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650 4 |a pharynx 
650 4 |a sensilla 
650 4 |a ultrastructure 
700 1 |a Nicholas, W L  |e verfasserin  |4 aut 
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