Hypotrichida

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Hypotrichida

[‚hī·pə′trik·ə·də]
(invertebrate zoology)
An order of highly specialized protozoans in the subclass Spirotrichia characterized by cirri on the ventral surface and a lack of ciliature on the dorsal surface.
References in periodicals archive ?
The cosmopolitan, hypotrich genus Euplotes (Class Spirotrichea, Order Euplotida) is remarkable among ciliates for its species richness (Kusch et al.
A particularly fascinating example is the hypotrich ciliate Euplotidium itoi.
Identification of cell surface polypeptides of the hypotrich Euplotes octocarinatus.
Epixenosomes: symbionts of the hypotrich ciliate Euplotidium itoi.
The hypotrich, Euplotes patella, showed the lowest sensitivity for both nickel and most of other tested metals.
Revealed quantitative predominance of attached ciliates (Epistylis, Opercularia, and Vorticella), occurrence of hypotrichs and predatory ciliates (Litonotus, Amphileptus), suctorians (Tokophria, Podophria), testate amoebae (Arcella and Centropyxis), the constant presence of rotifers, the presence of significant quantities of Oligochaeta of the Aeolosoma kind is an indicator of the process of nitrification of activated sludge, when the main part of the organic substrate has already mineralized.
A complete comparison of the two studies is not possible because Tribbey grouped taxa in the cyanobacteria, diatoms, flagellates, and hypotrichs to facilitate his primary objective of studying succession in these pools.
Hypotrichs "mate" both by the fusion of gametes to form zygotes and by the exchange of nuclei during "conjugation.