Folia Parasitologica 46[3] 199-203 (1999)

Ultrastructure of glands in a scutariellid (Platyhelminthes) and possible phylogenetic implications

Carlo Iomini1,2, Marco Ferraguti3, Jean-Lou Justine1
1 Laboratoire de Biologie Parasitaire, Protistologie, Helminthologie, EP 1790 CNRS "Biologie et Évolution des Parasites", Muséum national d'Histoire naturelle, 61 rue Buffon, 75231 Paris cedex 05, France
2 Present address: Mount Sinai School of Medicine, Department of Cell Biology and Anatomy, 1 Gustave L. Levy Place, Box 1007, New York NY 10029, USA
3 Dipartimento di Biologia, Università di Milano, Via Celoria 26, 20133 Milano, Italy

Subepidermal glands of the body of Troglocaridicola sp. (from the cavernicolous shrimp Troglocaris sp. in eastern Italy) were observed by transmission electron microscopy. The reservoir and duct of the glands are lined with longitudinal microtubules. Membrane-bound granules inside the gland show a distinctive pattern: they contain fibres, 18 nm in diameter, regularly arranged in bundles with a 5 nm space between fibres. From a survey of the available literature on glands of Platyhelminthes, it is concluded that this structure is known only in this species. Glands with regularly arranged 18 nm fibres, if characteristic for the Scutariellidae, could be considered an autapomorphy of this family, distinguishing it from other members of the Temnocephalida.

Keywords: Platyhelminthes, Temnocephalida, Scutariellidae, ultrastructure, glands

Received: November 23, 1998; Accepted: March 8, 1999; Published: September 1, 1999  Show citation

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Iomini, C., Ferraguti, M., & Justine, J. (1999). Ultrastructure of glands in a scutariellid (Platyhelminthes) and possible phylogenetic implications. Folia Parasitologica46(3), 199-203
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