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The sensory border of the land planarian Bipalium kewense (Tricladida, Terricola)
Fernandes, M.C.; Alvares, E.P.; Gama, P.; Silveira, M. (2001). The sensory border of the land planarian Bipalium kewense (Tricladida, Terricola), in: Saló, E. et al. (Ed.) Proceedings of the 9th International Symposium on the Biology of the Turbellaria, Barcelona, Spain, June 2000 [CD-ROM]. Belgian Journal of Zoology, 131(Suppl. 1): pp. 173-178
In: Saló, E.; Watson, N.; Schockaert, E. (Ed.) (2001). Proceedings of the 9th International Symposium on the Biology of the Turbellaria, Barcelona, Spain, June 2000 [CD-ROM]. Belgian Journal of Zoology, 131(Suppl. 1). Koninklijke Belgische Vereniging voor Dierkunde = Société royale zoologique de Belgique: Diepenbeek. 1-236 pp., more
In: Belgian Journal of Zoology. Koninklijke Belgische Vereniging voor Dierkunde = Société royale zoologique de Belgique: Gent. ISSN 0777-6276, more
Peer reviewed article  

Also published as
  • Fernandes, M.C.; Alvares, E.P.; Gama, P.; Silveira, M. (2001). The sensory border of the land planarian Bipalium kewense (Tricladida, Terricola). Belg. J. Zool. 131(Suppl. 1): 173-178, more

Available in Authors 
Document type: Conference paper

Keywords
    Immunohistochemistry; Skin; Substance p; Ultrastructure; Platyhelminthes [WoRMS]; Marine

Authors  Top 
  • Fernandes, M.C.
  • Alvares, E.P.
  • Gama, P.
  • Silveira, M.

Abstract
    The lunular headplate of Bipalium kewense is limited all around its margin by a distinct sensory organ, consisting of a row of papillae, intercalated with ciliated pits. We have investigated the detailed morphology of this sensory region by means of scanning and transmission electron microscopy, as well as, immunohistochemistry. Epithelial cells of the papillae have insunk nuclei and a microvillar border. The dense cytoplasm contains a system of smooth, elongate, vesicles. Monociliated ends of multipolar dendrites come to the surface of the headplate through the epithelial cells. Pear-shaped ciliated pits insert among the papillae. These pits are also provided with sensory dendrites having longer cilia, that are interpreted as chemo-receptors. The distal ends of receptors at both locations are provided with belt-ne septate junctions, especially evident following lanthanum. impregnation. Immunohistochemical experiments by indirect immunofluorescence have localized substance P in the ciliated receptors, thereby confirming their sensory nature.

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