Morphogenesis and Molecular Phylogeny of a Marine Urostylid Ciliate Apokeronopsis wrighti(Protista, Ciliophora, Hypotrichia)  

作　　者：LIAN Chunyu LI Ping ZHANG Tengteng SHAO Chen 

机构地区：[1]Department of Zoology,College of Life Sciences,Shaanxi Normal University,Xi’an 710119,China [2]Powerchina Northwest Engineering Corporation Limited,Xi’an 710065,China

出　　处：《Journal of Ocean University of China》2024年第4期1067-1075,共9页中国海洋大学学报（英文版）

基　　金：supported by the Natural Science Foundation of Shaanxi Province(Nos.2023-JC-QN-0214,2023JC-QN-0185);the Postdoctoral Science Foundation of Shaanxi Province(No.2023BSHEDZZ199);the Fundamental Research Funds for the Central Universities(No.GK202207019)。

摘　　要：Hypotrichs are one of the highly differentiated ciliated lineages which play important roles in ecological, environmental,evolutionary and basic biological studies. In the present study, we investigated the living characteristics, infraciliature, nuclear apparatus, ontogenesis and phylogenetic position of a marine hypotrichous ciliate, Apokeronopsis wrighti Long et al., 2008, which was isolated from coastal waters in Shenzhen, China. The new isolate resembles the type population in terms of morphological characteristics, morphometrics, and SSU rRNA gene sequence that is with a 99.7% similarity. Ontogenesis of A. wrighti is characterized by oral primordium for the proter as well as marginal and dorsal kineties anlagen in both filial products formed de novo, and the cirral row arranged along the paroral and endoral arises from several anterior frontoventral-transverse cirral streaks. Phylogenetic analyses based on SSU and concatenated gene data suggest that five species of Apokeronopsis form a monophyletic clade, and the genus Apokeronopsis is closely related to Thigmokeronopsis and Metaurostylopsis.

关 键 词：18S rRNA gene Apokeronopsis ciliated protists multi-gene ONTOGENESIS systematics Urostylida 

分 类 号：Q959[生物学—动物学]