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Studies on an endoparasitic ciliate Boveria labialis (Protozoa: Ciliophora) from the sea cucumber, Apostichopus japonicus

Published online by Cambridge University Press:  15 June 2006

Hongan Long
Affiliation:
Laboratory of Protozoology, Key Laboratory of Mariculture (KLM), Ocean University of China, Qingdao, 266003, People's Republic of China
Weibo Song
Affiliation:
Laboratory of Protozoology, Key Laboratory of Mariculture (KLM), Ocean University of China, Qingdao, 266003, People's Republic of China
Jiaxin Chen
Affiliation:
Yellow Sea Fisheries Research Institute, Qingdao, 266071, People's Republic of China
Jun Gong
Affiliation:
Laboratory of Protozoology, Key Laboratory of Mariculture (KLM), Ocean University of China, Qingdao, 266003, People's Republic of China
Daode Ji
Affiliation:
Laboratory of Protozoology, Key Laboratory of Mariculture (KLM), Ocean University of China, Qingdao, 266003, People's Republic of China
Xiaozhong Hu
Affiliation:
Laboratory of Protozoology, Key Laboratory of Mariculture (KLM), Ocean University of China, Qingdao, 266003, People's Republic of China
Honggang Ma
Affiliation:
Laboratory of Protozoology, Key Laboratory of Mariculture (KLM), Ocean University of China, Qingdao, 266003, People's Republic of China
Mingzhuang Zhu
Affiliation:
Laboratory of Protozoology, Key Laboratory of Mariculture (KLM), Ocean University of China, Qingdao, 266003, People's Republic of China
Mei Wang
Affiliation:
Laboratory of Protozoology, Key Laboratory of Mariculture (KLM), Ocean University of China, Qingdao, 266003, People's Republic of China

Abstract

The morphology and infraciliature of an endoparasitic ciliate, Boveria labialis, isolated from respiratory trees of the sea cucumber, Apostichopus japonicus, were investigated using living observation and silver impregnation methods. Based on the present and previous studies, an improved diagnosis is supplied: marine Boveria, size in vivo about 30–100×15–30 μm, body slender and flask-shaped, with a protruding lobe measuring 5–15 μm in length; one ovoid macronucleus and one micronucleus; single contractile vacuole positioned in posterior 1¼ of body length; 17–26 somatic kineties; paroral membrane and membranelle 2 forming a double anticlockwise spiral of nearly two turns.

Type
Research Article
Copyright
2006 Marine Biological Association of the United Kingdom

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