Ultrastructural observations on the tegument and associated structures of the monogenean Cichlidogyrus hallitypicus (Price & Kirk, 1967) Paperna, 1979
| Autor: | M.M. El-Naggar, Graham C. Kearn, A.A. Khidr |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Gills
Sense organ viruses Cichlidogyrus virus diseases Zoology Trematode Infections Viral tegument Anatomy biochemical phenomena metabolism and nutrition Biology biology.organism_classification Fish Diseases Microscopy Electron Infectious Diseases Perches Homogeneous Circular muscle Ultrastructure Animals Parasite hosting Parasitology Trematoda Monogenea |
| Zdroj: | International Journal for Parasitology. 21:707-713 |
| ISSN: | 0020-7519 |
| DOI: | 10.1016/0020-7519(91)90083-j |
| Popis: | The tegument of the ancyrocephaline monogenean gill parasite Cichlidogyrus halli typicus is basically similar to that of other monogeneans. However, there are some tegumental features shared with relatively few other monogeneans, namely the presence in the surface tegument of extensive regions of homogeneous granular cytoplasm, a close association between myofibres and the basal region of the tegument and the production of two different tegumental secretory bodies by the same cyton. It is suggested that the regions of homogeneous granular cytoplasm found in the troughs between the circular muscle fibres provide some kind of support for the tegument, perhaps related to contraction of the tegumental circular muscle fibres and body shape changes. Three kinds of transtegumental sensory structures are recognized, namely a uniciliated bulb, a bulb bearing a non-ciliary process and a non-ciliated bulb. The latter two kinds are reported for the first time in monogeneans. Possible functions of these sensory structures are discussed. |
| Databáze: | OpenAIRE |
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