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Lethality factors in a laboratory population of the spider mite Tetranychus urticae Koch (Acarina: Tetranychidae)

✍ Scribed by R. Boer; G. J. Oreel


Publisher
Springer Netherlands
Year
1980
Tongue
English
Weight
267 KB
Volume
51
Category
Article
ISSN
0016-6707

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✍ C. C. M. Feiertag-Koppen πŸ“‚ Article πŸ“… 1980 πŸ› Springer Netherlands 🌐 English βš– 632 KB

The morphology and behaviour of the holokinetic chromosomes of Tetranychus urticae Koch were studied in maturing oocytes from diplotene up to and including metaphase. Each of the three diplotene bivalents contains 2-3 chiasmata. During congression the dyads of the axially orientated bivalents make