The unusual cytoarchitecture of “vitelline follicles” in freshwater blood flukes of the genus Sanguinicola (Digenea, Aporocotylidae)

This is the first study assessing the cytoarchitecture of the vitellarium of members of the freshwater, teleost-infecting lineage of blood-flukes (Aporocotylidae). The vitelline cytoarchitecture of two innominate species of Sanguinicola from freshwater fishes in Russia showed that vitelline cells at...

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Autores principales:	Poddubnaya Larisa G., Zhokhov Alexander, Gibson David I.
Formato:	article
Lenguaje:	EN
Publicado:	EDP Sciences 2021
Materias:	vitelline cells intercellular junctions vitelline duct evolutionary lineage Infectious and parasitic diseases RC109-216
Acceso en línea:	https://doaj.org/article/cf0950c6656a4df99054fb55c85c3708
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spelling	oai:doaj.org-article:cf0950c6656a4df99054fb55c85c37082021-11-08T15:21:44ZThe unusual cytoarchitecture of “vitelline follicles” in freshwater blood flukes of the genus Sanguinicola (Digenea, Aporocotylidae)1776-104210.1051/parasite/2021070https://doaj.org/article/cf0950c6656a4df99054fb55c85c37082021-01-01T00:00:00Zhttps://www.parasite-journal.org/articles/parasite/full_html/2021/01/parasite210102/parasite210102.htmlhttps://doaj.org/toc/1776-1042This is the first study assessing the cytoarchitecture of the vitellarium of members of the freshwater, teleost-infecting lineage of blood-flukes (Aporocotylidae). The vitelline cytoarchitecture of two innominate species of Sanguinicola from freshwater fishes in Russia showed that vitelline cells at different stages of maturation are widely distributed throughout much of the body and are mixed with other cell types. The latter feature indicates that use of the term “follicular vitellarium” is inappropriate for species of this genus. An additional characteristic of the vitelline cells in these Sanguinicola spp. is their ability to form long, pseudopodia-like extensions of the peripheral cytoplasm that contact neighbouring vitelline cells and sarcoplasmic extensions, forming both heterologous and homologous intercellular junctions. Within the vitelline duct lumen, the cytoplasm of mature vitelline cells is filled with regular clusters (0.5–1.0 μm in diameter), comprising 10–30 vitelline globules, which have heterogeneous contents and electron-lucent lipid droplets (1.1–1.7 μm in diameter), but no apparent modifications of vitelline globules occur within the vitelline duct. The flattened, ciliated, epithelial lining of the common vitelline duct contains intra-epithelial nuclei, its luminal surface bears shallow lamellae and adjacent cells are adjoined by apical septate junctions. All of these observations, when compared to the marine Aporocotyle simplex, likely represent additional characteristics supporting the divergent evolutionary lineages of marine and freshwater aporocotylids.Poddubnaya Larisa G.Zhokhov AlexanderGibson David I.EDP Sciencesarticlevitelline cellsintercellular junctionsvitelline ductevolutionary lineageInfectious and parasitic diseasesRC109-216ENParasite, Vol 28, p 72 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	vitelline cells intercellular junctions vitelline duct evolutionary lineage Infectious and parasitic diseases RC109-216
spellingShingle	vitelline cells intercellular junctions vitelline duct evolutionary lineage Infectious and parasitic diseases RC109-216 Poddubnaya Larisa G. Zhokhov Alexander Gibson David I. The unusual cytoarchitecture of “vitelline follicles” in freshwater blood flukes of the genus Sanguinicola (Digenea, Aporocotylidae)
description	This is the first study assessing the cytoarchitecture of the vitellarium of members of the freshwater, teleost-infecting lineage of blood-flukes (Aporocotylidae). The vitelline cytoarchitecture of two innominate species of Sanguinicola from freshwater fishes in Russia showed that vitelline cells at different stages of maturation are widely distributed throughout much of the body and are mixed with other cell types. The latter feature indicates that use of the term “follicular vitellarium” is inappropriate for species of this genus. An additional characteristic of the vitelline cells in these Sanguinicola spp. is their ability to form long, pseudopodia-like extensions of the peripheral cytoplasm that contact neighbouring vitelline cells and sarcoplasmic extensions, forming both heterologous and homologous intercellular junctions. Within the vitelline duct lumen, the cytoplasm of mature vitelline cells is filled with regular clusters (0.5–1.0 μm in diameter), comprising 10–30 vitelline globules, which have heterogeneous contents and electron-lucent lipid droplets (1.1–1.7 μm in diameter), but no apparent modifications of vitelline globules occur within the vitelline duct. The flattened, ciliated, epithelial lining of the common vitelline duct contains intra-epithelial nuclei, its luminal surface bears shallow lamellae and adjacent cells are adjoined by apical septate junctions. All of these observations, when compared to the marine Aporocotyle simplex, likely represent additional characteristics supporting the divergent evolutionary lineages of marine and freshwater aporocotylids.
format	article
author	Poddubnaya Larisa G. Zhokhov Alexander Gibson David I.
author_facet	Poddubnaya Larisa G. Zhokhov Alexander Gibson David I.
author_sort	Poddubnaya Larisa G.
title	The unusual cytoarchitecture of “vitelline follicles” in freshwater blood flukes of the genus Sanguinicola (Digenea, Aporocotylidae)
title_short	The unusual cytoarchitecture of “vitelline follicles” in freshwater blood flukes of the genus Sanguinicola (Digenea, Aporocotylidae)
title_full	The unusual cytoarchitecture of “vitelline follicles” in freshwater blood flukes of the genus Sanguinicola (Digenea, Aporocotylidae)
title_fullStr	The unusual cytoarchitecture of “vitelline follicles” in freshwater blood flukes of the genus Sanguinicola (Digenea, Aporocotylidae)
title_full_unstemmed	The unusual cytoarchitecture of “vitelline follicles” in freshwater blood flukes of the genus Sanguinicola (Digenea, Aporocotylidae)
title_sort	unusual cytoarchitecture of “vitelline follicles” in freshwater blood flukes of the genus sanguinicola (digenea, aporocotylidae)
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/cf0950c6656a4df99054fb55c85c3708
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The unusual cytoarchitecture of “vitelline follicles” in freshwater blood flukes of the genus Sanguinicola (Digenea, Aporocotylidae)

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