Holotricha


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Holotricha

 

an order (or subclass) of protozoans of the class Infusoria. The cilia are either evenly distributed over the entire body or are developed predominantly on the ventral side. The Holotricha usually have special peristomial cilia, which often fuse into undulating membranes, of which there are usually three. There is no peristomial spiral of membranelles. More than 3,000 species are known. The Holotricha are particularly numerous in fresh and marine waters. There are parasitic forms, including the parasite of the fish Ichthyophthirius.

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In the present study, the mitigation of methanogenesis by SOTE contained tannins was accompanied by a several factors like in vitro dry matter digestibility (linear Pless than 0.01), TGP (linear Pless than 0.01) and microbial population (bacteria, Entodiniomorpha, Holotricha and methanogens; linear Pless than 0.01) what is consistent with Patra et al.
For example, dietary supplementation with cinnamaldehyde (180 mg d-1) and eugenol (90 mg d-1) increased the number of Holotricha, but the higher concentrations of cinnamaldehyde (600 mg d-1) and eugenol (300 mg d-1) caused no effect.
(Ciliata, Holotricha, Thigmotrichida) living on the gill epithelium of Dreissena polymorpha Pall., 1754.