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Morphological and Morphogenetic Redescriptions of the Stichotrich Ciliate Diaxonella trimarginata Jankowski, 1979 (Ciliophora, Stichotrichia, Urostylida)
並列摘要
The living morphology, infraciliature and morphogenesis of the rose-coloured stichotrich ciliate Diaxonella trimarginata Jankowski, 1979, collected from a freshwater pond in Qingdao (Tsingtao), China, were studied in vivo and after protargol impregnation. The Qingdao population of D. trimarginata is characterized by: body flexible, elongated elliptical in outline, 95-185 × 30-50 μm in vivo; two kinds of cortical granules, grass-green and red wine-coloured, respectively; single contractile vacuole positioned at anterior 1/3-1/4 of body; ca 80-140 macronuclear nodules and 7-10 micronuclei; about 37 adoral membranelles; 4 enlarged frontal cirri and 1 frontal row composed of 3-5 cirri; 5-8 buccal, 1-4 frontoterminal, 7-10 transverse cirri; midventral rows with 16-29 pairs of cirri, terminating at posterior 1/4 of the body; 4 left marginal rows, the length of which shorten incrementally from right to left; 3-4 dorsal kineties. The morphogenetic process is characterized by the following features: (1) the parental ciliature including the oral apparatus is entirely renewed; (2) the oral primordium of the proter originates de novo beneath the parental buccal cavity; (3) the right marginal row develops 2 separate anlagen intrakinetally; (4) in both dividers the left marginal rows derive from a single anlage that originates intrakinetally in the rightmost parental row, while all other old structures are morphogenetically inactive and are gradually resorbed during the division process; (5) the macronuclear nodules fuse to form a single mass prior to division. The morphogenetic data suggest a close relationship between the genera Diaxonella and Pseudourostyla, with their marginal cirri arising from a common primordium. Based on the data obtained, the genus Diaxonella Jankowski, 1979 is redefined thus: Pseudourostylidae with long midventral rows; several clearly distinct large frontal cirri and one row of frontal cirri; single long row of buccal cirri; transverse and frontoterminal cirri present; caudal cirri absent; one right and two or more left marginal rows which derive from a single anlage intrakinetally.
延伸閱讀
- Liu, M. J., Fan, Y. B., Miao, M., Hu, X. Z., Rasheid, K. A. S. A., Farraj, S. A. A., & Ma, H. G. (2015). Morphological and Morphogenetic Redescriptions and SSU rRNA Genebased Phylogeny of the Poorly-known Species Euplotes amieti Dragesco, 1970 (Ciliophora, Euplotida). Acta Protozoologica, 54(3), 171-182. https://doi.org/10.4467/16890027AP.15.014.3211
- Hu, X. Z., & Song, W. B. (2001). Morphological Redescription and Morphogenesis of the Marine Ciliate, Pseudokeronopsis rubra (Ciliophora: Hypotrichida). Acta Protozoologica, 40(2), 107-115. https://www.airitilibrary.com/Article/Detail?DocID=00651583-200106-201012290001-201012290001-107-115
- Berger, H. (2004). Amphisiella annulata (Kahl, 1928) Borror, 1972 (Ciliophora: Hypotricha): Morphology, Notes on Morphogenesis, Review of Literature, and Neotypification. Acta Protozoologica, 43(1), 1-14. https://www.airitilibrary.com/Article/Detail?DocID=00651583-200403-201012290012-201012290012-1-14
- SHI, X., LIU, G., WANG, C., & HU, X. (2017). Description of a New Brackish Water Ciliate, Uronychia xinjiangensis n. sp. (Ciliophora, Euplotida) Based on Morphology, Morphogenesis and Molecular Phylogeny. Acta Protozoologica, 56(4), 303-315. https://doi.org/10.4467/16890027AP.17.026.7828
- Ji, D. D., Xu, H. L., Choi, J. K., Warren, A., & Song, W. B. (2009). Taxonomic Characterization of Three Marine Peritrichous Ciliates from China: Zoothamnium alrasheidi spec. nov., Z. marinum Kahl, 1933 and Z. vermicola Precht, 1935 (Ciliophora: Peritrichia). Acta Protozoologica, 48(2), 171-183. https://www.airitilibrary.com/Article/Detail?DocID=00651583-200906-201101060032-201101060032-171-183