1887

Abstract

Two novel species, spec. nov. and spec. nov., isolated from coastal waters of Hangzhou Bay, China, were investigated with standard methods. is characterized as follows: size 95–135 × 50–85 μm; usually one spherical macronucleus; 12–15 prolonged caudal cilia; two or three preoral kineties and 42–50 somatic kineties; membranelle 1 (M1) about 20 % of the anterior fragment of membranelle 2 (M2a) in length, consisting of three longitudinal rows of kinetosomes; posterior end of M2a hook-like; membranelle 3 (M3) three-rowed. is characterized as follows: size about 55–85 × 25–55 μm; four or five preoral kineties and 21–23 somatic kineties; posterior end of M2a hook-like; M3 three-rowed. The small-subunit rRNA gene was sequenced for both species. Phylogenetic analyses revealed that is most closely related to and that is sister to and (GenBank accession no. JX310015). With the inclusion of the two new sequences, the monophyly of the genus is not supported.

Funding
This study was supported by the:
  • , Shanghai Universities First-class Disciplines Project of Fisheries , (Award 51279112)
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2015-12-01
2021-02-24
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