Taxonomy, Morphology and Phylogeny of a New Oligotrich Ciliate-Omegastrombidium hongkongense n. sp.(Protozoa: Ciliophora) from Clear Water Bay, Hong Kong

被引：0
作者：
SHEN Zhuo [1 ,2 ]
LIU Weiwei [3 ]
ZHANG Shuwen [2 ]
YI Zhenzhen [4 ]
LIU Hongbin [2 ]
机构：
[1] Microbial Ecology and Matter Cycle Group, School of Marine Sciences, Sun Yat-sen University
[2] Coastal Marine Laboratory, The Hong Kong University of Science and Technology
[3] Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Science
[4] Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Science, South China Normal University
来源：
JournalofOceanUniversityofChina | 2018年 / 17卷 / 04期
基金：
中国国家自然科学基金;
关键词：
infraciliature; marine ciliate; morphology; Oligotrichia; Noctiluca scuntillans;
D O I：
暂无
中图分类号：
Q959 [动物分类学（系统动物学）];
学科分类号：
071002 ;
摘要：
One new marine oligotrich ciliate, Omegastrombidium hongkongense n. sp., was isolated from a bloom of Noctiluca scuntillans near Port Shelter, Hong Kong. The morphology and infraciliature of this new species were studied on both living and protargol-stained specimens. Its phylogenetic position was discussed based on the sequence of the small subunit r RNA gene. O. hongkongense is different from its congeners with special characters. The cells are usually heart-shaped, and the cell size usually is(20–35) ×(20–30) μm in vivo. Its deep buccal cavity extends obliquely to about 1/2 of cell length. It shows prominent apical protrusion. The adoral zone of membranelles is divided into 17–19 collar membranelles and four buccal membranelles. It has one ball-like macronucleus. The girdle kinety forms a closed loop which obliquely surrounds the body. The ventral kinety and thigmotactic membranelles are not observed. The SSU r RNA sequence of O. hongkongense was close to those of Strombidium paracalkinsi and Varistrombidium kelum with approximately 99% similarity. In the phylogenetic trees, O. hongkongense can be grouped with O. elegans and V. kielum species with very low support(16% ML).
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收藏
页码：890 / 896
页数：7
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