(invertebrate zoology)
A heavily sclerotized group of free-living mites in the suborder Sarcoptiformes which serve as intermediate hosts of tapeworms.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a suborder of mites of the order Acariformes; the most numerous of all soil arthropods. The mites are enclosed in a sclerotized integument, whose sexual, anal, and oral openings are covered with opercula.

The developmental cycle consists of two morphologically and biologically distinct stages. The presexual forms (larvae, nymphs), which have soft integuments and are marked by cutaneous respiration, inhabit the top layers of the soil. Sexually mature individuals, which are armored and breathe through tracheae, inhabit the soil surface and the forest litter. They are capable of migrating vertically during fluctuations of moisture and temperature. The cycle from birth to sexual maturity lasts between 30 and 75 days.

The Oribatei are intermediate hosts of tapeworms of the family Anoplocephalidae, which are the causative agents of several helminthic diseases, including monieziasis. Worm eggs swallowed by a mite develop in 70 to 100 days into embryos, or cysticercoids (invasive stage), which remain inside the mite until the mite dies or is eaten by a ruminant.

Control measures include the dehelminthization of animals and the use of pastures that are not infested with mites.


Bulanova-Zakhvatkina, E. M. Pantsirnye kleshchi oribatidy. Moscow, 1967.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Entre los 129 capitulos que versan sobre la sistematica de Arthropoda, tres se refieren a taxones afines al grupo de artropodos: "Pentastomida", "Onychophora" y "Tardigrada"; en tanto que 126 resenan los taxones caracteristicos de Arthropoda, asi los grupos de Chelicerata se incluyen en 14 capitulos relativos a "Xiphosura", "Pycnogonida", "Palpigradi", "Schizomida", "Uropygi", "Amblypygi", "Solifugae", "Ricinulei", "Araneae" "Scorpiones", "Pseudoscorpionida", "Opiliones", "Acari" y "Oribatei (Acari)"; y en cuatro capitulos de Myriapoda se discuten "Symphyla", "Pauropoda", "Geophilomorpha" y "Diplopoda".
New Oribatulidae Thor, 1929 (Oribatei, Acari) from South Africa, new combinations and a key to the genera of the family.
Ebermann, "Oribatiden (Oribatei, Acari) als Zwischenwirte des Murmeltier-Bandwurmes Ctenotaenia marmotae (Frolich, 1802)," Parasitology Research, vol.
A partial revision of the Oppiidae Grandjean, 1954 (Acari: Oribatei).
List of subfossil oribatid mites (Acarina, Oribatei) of northern Europe and Greenland.
Sin embargo, se observa un incremento en las frecuencias de los tipos 14C, 22A, 126, y se registran las primeras apariciones de los tipos 72D, 88A, 93, 332E, 425, el tipo 36 (Acari, Oribatei) y Cosmarium cf.
Microarthropod community structures (Oribatei and Collembola) in Tam Dao National Park, Vietnam.
The development of soil mesofauna in a ruderal ecosystem as influenced by reclamation measures I: Oribatei Acari.
A statistical study of microdistribution of Oribatei (Acari) Part II: The transformation of the data.