The neuroactive substances and associated muscle system in Rhipidocotyle campanula (Digenea, Bucephalidae) from the intestine of the pike Esox lucius
| Autor: | Natalia D. Kreshchenko, Sergey Movsesyan, Darya Nefedova, Ekaterina Leonidovna Voropaeva, Natalia Mochalova, Nadezhda B. Terenina |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Nervous system Serotonin Campanula Phalloidin 010603 evolutionary biology 01 natural sciences 03 medical and health sciences chemistry.chemical_compound Brain commissure medicine Animals FMRFamide Actin Neurotransmitter Agents Microscopy Confocal biology Staining and Labeling Muscles Muscular system Anatomy Commissure biology.organism_classification Intestines 030104 developmental biology medicine.anatomical_structure chemistry Esocidae Animal Science and Zoology Body region Trematoda Developmental Biology |
| Zdroj: | Journal of morphologyREFERENCES. 281(9) |
| ISSN: | 1097-4687 |
| Popis: | We report about the muscular system and the serotonergic and FMRFamidergic components of the nervous system of the Bucephalidae trematode, Rhipidocotyle campanula, an intestinal parasite of the pike. We use immunocytochemical methods and confocal scanning laser microscopy (CLSM). The musculature is identified by histochemical staining with fluorescently labeled phalloidin. The body wall musculature of R. campanula contains three layers of muscle fibres - the outer thin circular, intermediate longitudinal and inner diagonal muscle fibres running in two opposite directions. The digestive system of R. campanula possess of a well-developed musculature: radial, longitudinal and circular muscle elements are detected in the pharynx, circular and longitudinal muscle filaments seen in the oesophagus, and longitudinal and the circular muscle fibres were found in the intestinal wall. Specific staining indicating the presence of actin muscle filaments occurs in the cirrus sac localized in the posterior body region. The frontal region of anterior attachment organ, the rhynchus, in R. campanula is represented by radial muscle fibres. The posterior part of the rhynchus comprise of radial muscles forming the organ's wall, and several strong longitudinal muscle bundles. Serotonergic and FMRFamidergic structures are detected in the central and peripheral compartments of the nervous system of R. campanula, that is, in the paired brain ganglia, the brain commissure, the longitudinal nerve cords, and connective nerve commissures. The innervations of the rhynchus, pharynx, oesophagus and distal regions of the reproductive system by the serotonergic and FMRFamidergic nervous elements are revealed. We compare our findings obtained on R. campanula with related data for other trematodes. |
| Databáze: | OpenAIRE |
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