Summary
The sensory palps of the macrodasyoid gastrotrichTetranchyroderma papii contain processes from two types of cell: 22–23 bipolar primary sensory cells and two to three support cells. In the proximal region of the palp each sensory cell contains a short ciliary segment with a basal body and from this ciliary segment a longer distal segment lacking axonemal microtubules extends through the major part of the length of the palp. Each support cell process bears microvilli and contains a conspicuous bundle of microtubules running the entire length of the process. The cell bodies of both cell types are situated in the epidermis of the head region. The palps are interpreted as having a chemosensory function. They are considered to be homologous to the posterior cephalic sensory organ ofTurbanella cornuta, but not the head tentacles ofChordodasys antennatus or nematode amphids.
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References
Batson, B.S.: Ultra structure of the anterior sense organs of adultGastromermis boophthorae (Nematoda: Mermithidae). Tissue Cell10, 51–61 (1978)
Boaden, P.J.S. and D.G. Erwin:Turbanella hyalina versusProtodriloides symbioticus: a study in interstitial ecology. Vie et Milieu Suppl.22, 479–492 (1971)
Bonar, D.B.: Ultrastructure of a cephalic sensory organ in larvae of the gastropodPhestilla sibogae (Aeolidacea, Nudibranchia). Tissue Cell10, 153–165 (1978)
Derivot, J.H., X. Mattel, R. Godet, and M. Dupé: Etude ultrastructurale de la region apicale des cellules de l'épithélmm olfactif deProtopterus annectens Owen (Dipneustes). J. Ultrastr. Res.66, 22–31 (1979)
Eakin, R.M.: Structure of invertebrate photoreceptors. In: Photochemistry of vision. Handbook of sensory physiology, Vol. VII/1 (H.J.A. Dartnall, ed.), pp. 625–684. Berlin-Heidelberg-New York: Springer 1972
Gerlach, S.A.: Gastrotrichen aus dem Küstengrundwasser des Mittelmeeres. Zool. Anz.150, 203–211 (1953)
Ghiradella, H., J. Case, and J. Cronshaw: Fine structure of the aesthetasc hairs ofCoenobita compressas Edwards. J. Morphol.124, 361–385 (1968)
Hummon, W.D.: Introgressive hybridization between two intertidal species ofTetranchyroderma (Gastrotricha, Thaumastodermatidae) with description of a new species. Mikrofauna Meeresboden61, 113–136(1977)
Hyams, J.S. and H. Stebbings: The distribution and function of microtubules in nutritive tubes. Tissue Cell9, 537–546 (1977)
Laverack, M.S.: Structure and function of chemoreceptor cells. In: Chemoreception in marine organisms (P.T. Grant and A.M. Mackie, eds.), pp. 1–48, New York: Acad. Press 1974
Moran, D.T. and F.G. Varela: Microtubules and sensory transduction. Proc. Nat. Acad. Sci. USA68, 757–760 (1971)
Moulton, D.G. and L.M. Beidler: Structure and function in the peripheral olfactory system. Phys. Rev.47, 1–52 (1967)
Nixon, David E.: Dynamics of spatial pattern for the gastrotrichTetranchyroderma bunti in the surface sand of high energy beaches. Int. Revue Ges. Hydrobiol.61, 211–248 (1976)
Reese, T.S.: Olfactory cilia in the frog. J. Cell Biol.25, 209–230 (1965)
Remane, A.: Gastrotricha. Bronn's Klassen und Ordnungen des Tierreichs4, 1–242 (1936)
Rieger, G.E. and R.M. Rieger: Comparative fine structure study of the gastrotrich cuticle and aspects of cuticle evolution within the Aschelminthes. Z. Zool. Syst. Evolutionsforsch.15, 81–124 (1977)
Rieger, R.M., E. Ruppert, G. Rieger and C. Schoepfer-Sterrer: On the fine structure of gastrotrichs with description ofChordodasys antennatus sp. nov. Zool. Scr.3 (5/6), 219–238 (1974)
Ruppert, E.E.: The reproductive system of gastrotrichs II. Insemination inMacrodasys: a unique mode of sperm transfer in Metazoa. Zoomorphologie89, 207–228 (1978a)
Ruppert, E.E.: The reproductive system of gastrotrichs III. Genital organs of Thaumastodermatinae subfam. n. and Diplodasyinae subfam. n. with discussion of reproduction in Macrodasyida. Zool. Scr.7, 93–114 (1978b)
Ruppert, E.E., and K. Shaw: The reproductive system of gastrotrichs I. Introduction with morphological data for two newDolichodasys species. Zool. Scr.6, 185–195 (1977)
Teuchert, G.: Sinneseinrichtungen beiTurbanella cornuta Remane (Gastrotricha). Zoomorphologie83, 193–207 (1976)
Teuchert, G.: The ultrastructure of the marine GastrotrichTurbanella cornuta Remane (Macrodasyoidea) and its functional and phylogenetic importance. Zoomorphologie88, 189–246 (1977)
Thurm, U.: General organization of sensory receptors. Rediconti S.I.F.43, 44–68 (1969)
Ward, S., N. Thomson, J.G. White, and S. Brenner: Electron microscopical reconstruction of the anterior sensory anatomy of the nematodeCaenorhabditis elegans. J. Comp. Neur.160, 313–338 (1975)
West, D.L.: Comparative ultrastructure of juvenile and adult nuchal organs of an annelid (Polychaeta: Opheliidae). Tissue Cell10, 243–257 (1978)
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Gagné, G.D. Ultrastructure of the sensory palps ofTetranchyroderma papii (Gastrotricha, Macrodasyida). Zoomorphologie 95, 115–125 (1980). https://doi.org/10.1007/BF00997905
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DOI: https://doi.org/10.1007/BF00997905