, Volume 15, Issue 5, pp 562–567 | Cite as

A cytological demonstration of arrhenotoky in three mites of the family Phytoseiidae

  • Roger I. C. Hansell
  • Margaret M. Mollison
  • William L. Putman


Chromosome numbers of Phytoseiulus persimilis. Amblyseius fallacis, and Typhlodromus caudiglans were determined in lacto-propionic orcein squashes of developing eggs. Eggs of all species had either four or eight chromosomes: this indicates arrhenotoky (2 n = 8). All chromosomes are acrocentric; one of P. persimilis and one of A. fallacis had a lighter staining area suggestive of heterochromatin.


Developmental Biology Chromosome Number Orcein Staining Area Light Staining 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag 1964

Authors and Affiliations

  • Roger I. C. Hansell
    • 1
    • 2
  • Margaret M. Mollison
    • 1
    • 2
  • William L. Putman
    • 1
    • 2
  1. 1.Research Branch, Canada Department of AgricultureThe Research LaboratoryVineland Station
  2. 2.The Department of BotanyUniversity of TorontoTorontoCanada

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