✦ LIBER ✦

Chromosomes and types of parthenogenesis in the false spider mites (Acari: Tenuipalpidae)

✍ Scribed by W. Helle; H. R. Bolland; W. R. B. Heitmans

Publisher: Springer Netherlands
Year: 1980
Tongue: English
Weight: 762 KB
Volume: 54
Category: Article
ISSN: 0016-6707
DOI: 10.1007/bf00122407

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✦ Synopsis

The chromosome numbers and types of parthenogenesis have been assessed for 19 species of 6 different genera of the Tenuipalpidae. The modal number of n = 2 is found to occur in species of the genera Aegyptobia, Cenopalpus, Brevipalpus, Dolichotetranychus and Raoiella. The bisexual species examined exhibit haplo-diploidy (with n = 2 and 2n = 4) as a result of arrhenotokous parthenogenesis. Thelytokous parthenogenesis with female diploidy is found in Aegyptobia vannus (2n = 4), Aegyptobia thujae (2n = 4) and in Tenuipalpus spec. (2n = 6). Thelytoky with female haploidy exists in Brevipalpus obovatus and B. phoenicus, both with n=2.

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