Comparison of some closely-related Metanophrys-taxa with description of a new species Metanophrys similis nov spec. (Ciliophora, Scuticociliatida)

摘要

The living morphology, infraciliature and silverline system of a marine scuticociliate Metanophrys similis nov. spec. have been observed and investigated. Based on both morphological and molecular biological data (using the random amplified polymorphic DNA fingerprinting method), several closely-related and easily confused taxa were compared. The diagnosis for this new taxon: slender marine Metanophrys with rounded cell ends and pre-equatorially positioned cytostome; in vivo 25-50 x 10-15 mum; 3-rowed membranelle 1 about as long as membranelle 2; paroral membrane extending anteriorly to about mid-level of membranelle 2; 11-12 somatic kineties; scutica with ca. 5-7 basal bodies arranged in a long line; extrusomes bar-like, aligned between somatic kineties; one caudal cilium and one macronucleus. [References: 26]