作者: KLAUS ROHDE
DOI: 10.1111/J.1463-6409.1987.TB00075.X
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摘要: Craspedella has a non-ciliated epidermis with nuclei located in the and short microvilli. There is thin basal lamina thick underlying fibrous matrix. Rhabdites are secreted through ducts lined by microtubules. Multiciliate sense receptors consist of bundles dendrites depression epidermis. Each dendrite cilium cross-striated rootlet; there no electron-dense collars. Spermatozoa have peripheral microtubules which cross-section arranged ring-like or spiral fashion, numerous granules, mitochondria nucleus; axonemes 9 +‘1’type free for most their length. Centrioles occur some nerve fibres. In Didymorchis parts ciliated epidermal perikarya ‘insunk’, connected to surface part single cytoplasmic process. Epidermal cilia vertical horizontal rootlets. ciliary tips rod along central pair tubules extends tip, where it widens become terminal plate; doublets gradually disappear losing Receptors observed uniciliate. as Craspedella. Ultrastructural evidence indicates that arc closely related belong Rhabdocoela.