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Redescriptions of Three Marine Peritrichous Ciliates, Zoothamnium alternans Claparède et Lachmann, 1859, Z. sinense Song, 1991 and Z. commune Kahl, 1933 (Ciliophora, Peritrichia), from North China

並列摘要


Three marine peritrichous ciliates, Zoothamnium alternans Claparède et Lachmann, 1859, Z. sinense Song, 1991 and Z. commune Kahl, 1933, were isolated from coastal waters near Qingdao, China. The living morphology, infraciliature and silverline system were studied in both living and silver-impregnated specimens. Based on the Qingdao populations, improved diagnoses and redescriptions are provided for each species: Z. alternans is distinguished from its congeners by the alternately branched stalk, the macrozooids on the main stalk trunk, the J-shaped macronucleus and in having 40-55 silverlines between the oral area and the trochal band and 20-30 between the trochal band and the scopula; Z. sinense can be recognized by the small zooid size, the alternately branched stalk, and in having 55-70 silverlines between the oral area and the trochal band and 20-35 between the trochal band and the scopula; Z. commune can be distinguished from other species of similar zooid shape and size by the form of peniculus 3 and the number of silverlines between the oral area and the trochal band (59-70) and between the trochal band and the scopula (38-43).

並列關鍵字

marine ciliate morphology Peritrichida Zoothamnium

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