Ultrahistology of oogenesis and vitellogenesis in the spider mite Tetranychus urticae.

@article{MothesWagner1984UltrahistologyOO,
  title={Ultrahistology of oogenesis and vitellogenesis in the spider mite Tetranychus urticae.},
  author={Ursula Mothes-Wagner and Karl August Seitz},
  journal={Tissue \& cell},
  year={1984},
  volume={16 2},
  pages={
          179-94
        }
}
Oogenesis in ovipositing females of the microtrombidiid mite Platytrombidium fasciatum (C.L. Koch) (Acariformes: Microtrombidiidae)
TLDR
The process of oogenesis in ovipositing females of the microtrombidiid mite Platytrombidium fasciatum was investigated by means of transmission electron microscopy and found that large oval oocytes, tightly packed with elements of rough endoplasmic reticulum and free ribosomes and containing large nucleus, gradually migrate to the ovarian boundaries, coming into contact with a basal lamina.
Oogenesis in the pentastomidRaillietiella aegypti (Cephalobaenida)
In the pentastomidRaillietiella aegypti the structure of the genital apparatus and of oogonia, previtellogenic and vitellogenic oocytes was studied by light and electron microscopy. The ovarian wall
Egg shells in mites: vitelline envelope and chorion in Acaridida (Acari)
TLDR
It can be argued, however, that locular chambers of Tyrophagus exochorion may participate in reduction of water loss rather than in egg adherence or plastron respiration, as previously suggested in the literature.
Vitellogenesis in Varroa jacobsoni, a parasite of honey bees
TLDR
It was found that the cytoplasmic connection between the lyrate organ and the oocyte persists far into the vitellogenic growth phase of Varroa jacobsoni, and a large amount of yolk material is taken up from the haemolymph.
Post-embryonic development of the two-spotted spider mite Tetranychus urticae with special reference to the differentiation of the female reproductive system
TLDR
The spider mite passes through four active stages in its life cycle: larva, protonymph, deutonymph, adult; each of the movable stages is followed by a resting phase (= chrysalis) where moulting processes are prepared.
Egg-Shells in mites: Cytological aspects of vitelline envelope and chorion formation in Pergamasus barbarus berlese (Gamasida, Pergamasidae)
TLDR
Double role of exochorion as plastron and as a structure protecting the embryo from dessication is suggested.
Intercellular connection between the lyrate organ and the growing oocyte in Varroa jacobsoni as revealed by Lucifer Yellow dye-coupling
TLDR
Since translocation of LY in vitro reflects the alimentation of oocytes (nutrimentary oogenesis), it is highlighted the temporal pattern of intercellular transport during oogenesis.
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TLDR
Light and electron microscope studies were made on harvestman oocytes during the course of their origin, differentiation, and vitellogenesis, finding that the previtellogenic oocytes are impermeable to horseradish peroxidase under both in vivo and in vitro conditions.
The cytology of the vitellogenic stages of oogenesis in Drosophila melanogaster. II. Ultrastructural investigations on the origin of protein yolk spheres
The cytology of the vitellogenic stages in the development of the oocyte of Drosophila melanogaster is described following an electron microscopic study of sections of plastic‐embedded ovaries and
The transformation of male sex cells of Tetranychus urticae K. (Acari, Tetranychidae) during passage from the testis to the oocytes: an electron microscopic study
TLDR
The fine structure of the spermatozoon of Tetranychus urticae is described during passage from the testis to the site of insemination in the ovary and can be observed in the lumen of the receptaculum seminis of the female.
The cytology of the vitellogenic stages of oogenesis in Drosophila melanogaster
TLDR
Electron microscopic studies of oogenesis in Drosophila melanogaster suggest that the ovarian follicle cells alone are responsible for the secretion of the vitelline membrane and chorion, but under certain aberrant conditions, other cell types may serve to induce formation of these membranes.
ELECTRON MICROSCOPE STUDY OF THE VITELLINE BODY OF SOME SPIDER OOCYTES
TLDR
The optical properties of the vitelline body cortex compared with the electron microscope findings lead to the concept that this layer is a "composite body" according to Weiner's theory.
Functional microscopic anatomy of the digestive system of Tetranychus urticae (Acari, Tetranychidae).
TLDR
The phagocytes take over specialised functions in digestion, whereas at the same time they serve as a system of distribution for storage and nutritive products and replace the missing hemolymph system.
THE ULTRASTRUCTURE OF THE VITELLINE BODY IN THE OOCYTE OF THE SPIDER TEGENARIA PARIETINA
TLDR
The vitelline body in the mature oocyte of the spider Tegenaria parietina is composed of 4 different zones and it is suggested that the peculiar ultrastructure of these cytoplasmic components may be related to an intense metabolic activity.
ANNULATE LAMELLAE AND "YOLK NUCLEI" IN OOCYTES OF THE DRAGONFLY, LIBELLULA PULCHELLA
TLDR
Evidence is provided that the appearance of cortical ooplasmic stacks of annulate lamellae in the dragonfly oocyte is specifically limited to cytoplasmic areas of high electron density which contain RNA but which do not have a ribosomal morphology.
Electron microscopic and autoradiographic studies on vitellogenesis in Necturus maculosus
TLDR
Electron microscope studies indicate the primary proteinaceous yolk to arise within structures referred to in other amphibian oocytes as yolk precursor sacs or bodies, and the interior of these sacs becomes granular, perhaps by a dissolution of the components just described, and soon becomes organized into a crystalline configuration.
The formation of “Accessory Nuclei” and annulate lamellae in the oöcytes of the flour moth anagasta kühniella
  • W. J. Cruickshank
  • Biology
    Zeitschrift für Zellforschung und Mikroskopische Anatomie
  • 2004
TLDR
Oöcytes in various stages of maturation were studied with the electron microscope and it is suggested that mRNA enters the cytoplasm in membraneous vesicles which collapse, liberating the mRNA, and thus produce annulate lamellae which may later form E.R.M. as a potential source of accessory nuclei.
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