Evolutionary relationship within peritrichs

摘要

The peritrichs, Peritrich ciliates, are a large and distinctive group of ciliates, which are protozoans characterized by cilia and two kinds of nuclei, ma-cronucleus and micronucleus. Traditionally, they have been subdivided into the Orders Sessilida and Mobilida according to morphological characters. Recent molecular studies by a research team at the CAS Institute of Hydrobiology (IHB) will help people to gain insight into the evolutionary relationship of the group. Their work entitled "Reevaluation of the phylo-genetic relationships between mobiline and sessiline peritrichs (Ciliophora, Oligohymenophora) based on sequences of 18S small subunit rRNA genes" was reported in Journal of Eukaryotic Microbiology, a key US journal in the field.