ArticleProtoplasma2015
Germ cell cluster organization and oogenesis in the tardigrade Dactylobiotus parthenogeneticus Bertolani, 1982 (Eutardigrada, Murrayidae).
Article in Protoplasma, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
- The formation and function of intercellular bridges in male germlines.Communications biology · 2026Review
- Storage cell proliferation during somatic growth establishes that tardigrades are not eutelic organisms.Biology open · 2024Article
- Quantitative models for building and growing fated small cell networks.Interface focus · 2022Review
- All for one: changes in mitochondrial morphology and activity during syncytial oogenesis†.Biology of reproduction · 2022Article
- Collective oscillations of coupled cell cycles.Biophysical journal · 2021Article
- Size scaling in collective cell growth.Development (Cambridge, England) · 2021Article
- Mapping parameter spaces of biological switches.PLoS computational biology · 2021Article
- Tardigrada: An Emerging Animal Model to Study the Endoplasmic Reticulum Stress Response to Environmental Extremes.Progress in molecular and subcellular biology · 2021Article
- Integrative description of a new Dactylobiotus (Eutardigrada: Parachela) from Antarctica that reveals an intraspecific variation in tardigrade egg morphology.Scientific reports · 2020Article
- X-ray imaging of a water bear offers a new look at tardigrade internal anatomy.Zoological letters · 2019Article
- Article
- The structure of the desiccated Richtersius coronifer (Richters, 1903).Protoplasma · 2017Article
- Article
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Germ cell cluster organization and the process of oogenesis in Dactylobiotus parthenogeneticus have been described using transmission electron microscopy and light microscopy. The reproductive system of D. parthenogeneticus is composed of a single, sac-like, meroistic ovary and a single oviduct that opens into the cloaca. Two zones can be distinguished in the ovary: a small germarium that is filled with oogonia and a vitellarium that is filled with germ cell clusters. The germ cell cluster, which has the form of a modified rosette, consists of eight cells that are interconnected by stable cytoplasmic bridges. The cell that has the highest number of stable cytoplasmic bridges (four bridges) finally develops into the oocyte, while the remaining cells become trophocytes. Vitellogenesis of a mixed type occurs in D. parthenogeneticus. One part of the yolk material is produced inside the oocyte (autosynthesis), while the second part is synthesized in the trophocytes and transported to the oocyte through the cytoplasmic bridges. The eggs are covered with two envelopes: a thin vitelline envelope and a three-layered chorion. The surface of the chorion forms small conical processes, the shape of which is characteristic for the species that was examined. In our paper, we present the first report on the rosette type of germ cell clusters in Parachela.
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