KFU. Card publication. Excretory system ultrastructure of diphyllobothriidean tapeworm Pyramicocephalus phocarum with cytochemical and functional implication.

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EXCRETORY SYSTEM ULTRASTRUCTURE OF DIPHYLLOBOTHRIIDEAN TAPEWORM PYRAMICOCEPHALUS PHOCARUM WITH CYTOCHEMICAL AND FUNCTIONAL IMPLICATION.

Form of presentation

Articles in Russian journals and collections

Year of publication

2022

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Authors, employees of KFU

Biserova Natalya Mikhaylovna, author

Other authors

Mustafina Alfiya Rodmirovna, author

Bibliographic description in the original language

Mustafina A.R., Biserova N. M. 2022. Excretory system ultrastructure of diphyllobothriidean tapeworm Pyramicocephalus phocarum with cytochemical and functional implication. Invertebrate Zoology.V.19(2) P.159-184. doi: 10.15298/invertzool.19.2.05

Annotation

The article describes the architecture and ultrastructure of the excretory system (protonephridial system) of the plerocercoid Pyramicocephalus phocarum (Fabricius, 1780), a parasite of the liver of the cod Gadus morhua Linneaus, 1758. The excretory system consists of cyrtocytes and a syncytial excretory epithelium, which forms the protonephridial funnels, the canal system, and the excretory bladder. Our immunocytochemical studies have shown that cyrtocytes are immunoreactive to α-tubulin, the protonephridial complexes are reactive to fibrillar actin. The excretory epithelium consists of differentiated apical cytoplasm specializing at secretion and reabsorption, and submerged cytons/perikarya. Architecture of the excretory system includes syncytial canals of various diameters and positions within the body. The 1st and the 2nd order canals form a complex three-dimensional peripheral network. The longitudinal central (main) excretory canals branch dichotomously at the posterior end of the body and flow into the excretory bladder. The main excretory canals possess a thick muscular wall innervated by the central nervous system. In addition, the ultrastructure of the excretory bladder, nephropore, terminal excretory pore are described. A close connection between the excretory and nervous systems occurs in the plerocercoid body. In the scolex, the main excretory canals and transverse excretory anastomoses pierce the brain, and underlie the transverse cerebral commissure. Neurites of the main nerve cords innervate the main excretory channels. Apart from this, there are unciliated sensory organs in the wall of the terminal excretory pore. The functional significance of the described structures is discussed. Based on the obtained ultrastructural and immunocytochemical data, we support the hypothesis of primary ultrafiltration through a molecular sieve of the glycocalyx, covering the weir ribs of protonephridia.

Keywords

Cestoda, cyrtocyte, excretory bladder, flame cell, filtration, junctions, immunocytochemistry, nephropore, protonephridia, syncytium, ultrastructure.

The name of the journal

Invertebrate Zoology

URL

https://kmkjournals.com/journals/Inv_Zool/IZ_Index_Volumes/IZ_19/IZ_19_2_159_184

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=280865&p_lang=2

Resource files

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F_2022_invert19_2_159_184_Mustafina_Biserova_for_Inet.pdf	1,14	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Biserova Natalya Mikhaylovna	ru_RU
dc.contributor.author	Mustafina Alfiya Rodmirovna	ru_RU
dc.date.accessioned	2022-01-01T00:00:00Z	ru_RU
dc.date.available	2022-01-01T00:00:00Z	ru_RU
dc.date.issued	2022	ru_RU
dc.identifier.citation	Mustafina A.R., Biserova N. M. 2022. Excretory system ultrastructure of diphyllobothriidean tapeworm Pyramicocephalus phocarum with cytochemical and functional implication. Invertebrate Zoology.V.19(2) P.159-184. doi: 10.15298/invertzool.19.2.05	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=280865&p_lang=2	ru_RU
dc.description.abstract	Invertebrate Zoology	ru_RU
dc.description.abstract	The article describes the architecture and ultrastructure of the excretory system (protonephridial system) of the plerocercoid Pyramicocephalus phocarum (Fabricius, 1780), a parasite of the liver of the cod Gadus morhua Linneaus, 1758. The excretory system consists of cyrtocytes and a syncytial excretory epithelium, which forms the protonephridial funnels, the canal system, and the excretory bladder. Our immunocytochemical studies have shown that cyrtocytes are immunoreactive to α-tubulin, the protonephridial complexes are reactive to fibrillar actin. The excretory epithelium consists of differentiated apical cytoplasm specializing at secretion and reabsorption, and submerged cytons/perikarya. Architecture of the excretory system includes syncytial canals of various diameters and positions within the body. The 1st and the 2nd order canals form a complex three-dimensional peripheral network. The longitudinal central (main) excretory canals branch dichotomously at the posterior end of the body and flow into the excretory bladder. The main excretory canals possess a thick muscular wall innervated by the central nervous system. In addition, the ultrastructure of the excretory bladder, nephropore, terminal excretory pore are described. A close connection between the excretory and nervous systems occurs in the plerocercoid body. In the scolex, the main excretory canals and transverse excretory anastomoses pierce the brain, and underlie the transverse cerebral commissure. Neurites of the main nerve cords innervate the main excretory channels. Apart from this, there are unciliated sensory organs in the wall of the terminal excretory pore. The functional significance of the described structures is discussed. Based on the obtained ultrastructural and immunocytochemical data, we support the hypothesis of primary ultrafiltration through a molecular sieve of the glycocalyx, covering the weir ribs of protonephridia.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Cestoda	ru_RU
dc.subject	cyrtocyte	ru_RU
dc.subject	excretory bladder	ru_RU
dc.subject	flame cell	ru_RU
dc.subject	filtration	ru_RU
dc.subject	junctions	ru_RU
dc.subject	immunocytochemistry	ru_RU
dc.subject	nephropore	ru_RU
dc.subject	protonephridia	ru_RU
dc.subject	syncytium	ru_RU
dc.subject	ultrastructure.	ru_RU
dc.title	Excretory system ultrastructure of diphyllobothriidean tapeworm Pyramicocephalus phocarum with cytochemical and functional implication.	ru_RU
dc.type	Articles in Russian journals and collections	ru_RU