Thumbnail Image
Item

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

Poddubnaya, Larisa G
; 
Zhokhov, Alexander
; 
Citations
Altmetric:
Advisors
Editors
Other Contributors
Affiliation
EPub Date
Issue Date
2021-10-26
Submitted Date
2021-08-06
Subject Terms
vitelline cells
intercellular junctions
vitelline duct
evolutionary lineage
Collections
Science
Show all metadata
Files
Thumbnail Image
Published version
Adobe PDF, 2.16 MB
Research Projects
Organizational Units
Journal Issue
Other Titles
Abstract
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 <jats:italic>Sanguinicola</jats:italic> 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 <jats:italic>Sanguinicola</jats:italic> 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 <jats:italic>Aporocotyle simplex</jats:italic>, likely represent additional characteristics supporting the divergent evolutionary lineages of marine and freshwater aporocotylids.
Citation
The unusual cytoarchitecture of “vitelline follicles” in freshwater blood flukes of the genus Sanguinicola (Digenea, Aporocotylidae) Larisa G. Poddubnaya, Alexander Zhokhov, David I. Gibson Parasite 28 72 (2021) DOI: 10.1051/parasite/2021070
Publisher
EDP Sciences
Journal
Parasite
Research Unit
URI
http://hdl.handle.net/10141/623311
DOI
10.1051/parasite/2021070
PubMed ID
PubMed Central ID
Embedded videos
Type
Journal Article
Item Description
Copyright © L.G. Poddubnaya et al., published by EDP Sciences, 2021. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The attached file is the published version of the article.
NHM Repository
Series/Report no.
ISSN
1252-607X
EISSN
1776-1042
ISBN
ISMN
GovDoc
Test Link
License
openAccess
cb
Sponsors