Cytological studies of the two-spotted spider mite Tetranychus urticae Koch (Tetranychidae, trombidiformes). I: Meiosis in eggs

@article{FeiertagKoppen2004CytologicalSO,
  title={Cytological studies of the two-spotted spider mite Tetranychus urticae Koch (Tetranychidae, trombidiformes). I: Meiosis in eggs},
  author={C. C. M. Feiertag-Koppen},
  journal={Genetica},
  year={2004},
  volume={46},
  pages={445-456}
}
Meiosis in eggs of Tetranychus urticae Koch is described. The two maturation divisions result in (a) a haploid female pronucleus consisting of three karyomeres; — (b) a divided first polar body in which the chromosomes change into karyomeres; — (c) a second polar body, entering a new mitosis which is blocked in metaphase. Irradiation of adult females produced chromosome fragments in the meiotic divisions. The fragments behave as intact chromosomes which proves that during meiosis a diffuse… 
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Cytological studies of the two-spotted spider mite Tetranychus urticae Koch (tetranychidae, trombidiformes) II. Meiosis in growing oocytes

TLDR
The morphology and behaviour of the holokinetic chromosomes of Tetranychus urticae Koch were studied in maturing oocytes from diplotene up to and including metaphase and it was argued that chiasmata terminalise towards both ends of the dyads and that each dyad contains two sister chromatids.

Some remarks on the cytogenetics of oribatid mites

TLDR
The behaviour of the meiotic segregations of the parthenogenetic oribatid mite Archegozetes longisetosus Aoki were investigated in maturing oocytes and it is believed to have evidence for an inverted meiotic sequence.

Ultrastructure of holokinetic mitotic chromosomes and interphase nuclei of Tetranychus urticae Koch (Acari, Tetranychidae) in relation to loss and missegregation of induced fragments

TLDR
From morphologic data, the fate of induced chromosome fragments, described in earlier papers, is surmised to depend on events in interphase as well as in mitosis.

Holocentromere identity: from the typical mitotic linear structure to the great plasticity of meiotic holocentromeres

TLDR
Recent and former findings about centromere/kinetochore adaptations shown by holocentric organisms during mitosis and meiosis are summarized and how these adaptations are related to the type of meiosis found are discussed.

Specialization in the behaviour of chromosomes on the meiotic spindle

TLDR
Arguments are presented for the hypothesis that the monokinetic chromosomes are nothing but the end point in the same gradient and do not form a fundamentally different category.

Mass Production of Predatory Mites and Their Efficacy for Controlling Pests

TLDR
This chapter discussed the rearing method on various diets referring to the advantages, the cost and benefit as well as the abundance of these predators and the possibility of their application and success, especially in Egypt.

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