Peritrichia


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Peritrichia

[‚per·ə′trik·ē·ə]
(invertebrate zoology)
A specialized subclass of the class Ciliatea comprising both sessile and mobile forms.
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For several years this author has worked under the assumption that there was no simple field method to perform lab and field classifications, differentiating the genera/ species of the spasmoneme bearing contractile, colonial members of Peritrichia, specifically of the ciliates -- Carchesium and Zoothamnium.
The highest ciliate ingestion rates were observed in January 2011, due to the fact that the ciliated population were numerically dominated by the group Spirotrichea (mainly Halteria grandinella), composed of small bacterivorous ciliates (usually <30[micro]m) and by the Peritrichia group (mainly represented by Campanella umbellaria and Vorticella aquadulcis-complex), composed by efficient bacterial filter feeders.
In the dry season, although higher density and biomass had been verified for species of the orders Heterotrichida and Peritrichia, mostly comprised of benthic species, other species with great values of these attributes in the present study, Pelagovorticella mayeri, Tintinnidium sp.
Taxonomische und okologische Revision der Ciliaten des Saprobiensystems - Band II: Peritrichia, Heterotrichida, Odontostomatida.