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Two new ectoparasitic ciliates, Sphenophrya solinis sp. nov. and Planeticovorticella paradoxa sp. nov. (Protozoa: Ciliophora), from marine molluscs

Published online by Cambridge University Press:  07 February 2011

Kuidong Xu
Affiliation:
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Yanli Lei
Affiliation:
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Khaled A.S. Al-Rasheid
Affiliation:
Zoology Department, King Saud University, Riyadh 11451, Saudi Arabia
Weibo Song*
Affiliation:
Laboratory of Protozoology, Institute of Evolution & Marine Diversity, Ocean University of China, Qingdao 266003, China
*
Correspondence should be addressed to: W. Song, Laboratory of Protozoology, Institute of Evolution & Marine Diversity, Ocean University of China, Qingdao 266003, China email: wsong@ouc.edu.cn

Abstract

Two new species of ciliates parasitizing marine molluscs in the Yellow Sea were described using live observation, protargol and wet silver impregnation: Sphenophrya solinis sp. nov. from the gills of Solen grandis and Planeticovorticella paradoxa sp. nov. from the gills as well as the mantle cavity of Meretrix meretrix. Sphenophrya solinis is elongate boat-shaped, and characterized by having the right system of 5–6 kineties more or less distinctly longer than the left system of 3–5 kineties and the bud formed on the dorsal left of body during budding. Planeticovorticella paradoxa is a second member of the genus Planeticovorticella, and characterized by the free-swimming, cylindroidal trophonts usually with no stalk or with a very short and non-contractile stalk, the C-shaped macronucleus longitudinally oriented in mid-body, and the apically located contractile vacuole. The morphology, infraciliature and morphometry of the two new species were studied in detail and compared with those of their most similar congeners.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 2011

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Two new ectoparasitic ciliates, Sphenophrya solinis sp. nov. and Planeticovorticella paradoxa sp. nov. (Protozoa: Ciliophora), from marine molluscs
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Two new ectoparasitic ciliates, Sphenophrya solinis sp. nov. and Planeticovorticella paradoxa sp. nov. (Protozoa: Ciliophora), from marine molluscs
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