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Morphological Redescriptions of Aspidisca magna Kahl, 1932 and A. leptaspis Fresenius, 1865 (Ciliophora, Euplotida), with Notes on Ontogenesis in A. magna
並列摘要
The largest known Aspidisca species, A. magna Kahl, 1932, was found from coastal waters near Qingdao (Tsingtao), northern China, and investigated using both the ”wet” silver nitrate and protargol staining method. Based on the living observation and impregnated individuals, improved diagnosis and morphometric data are provided. As an additional contribution, the morphogenesis in Aspidisca magna during binary fission was revealed and summarized as follows: 1) the parental adoral zone of membranelles and paroral membrane are retained by the proter; 2) the oral primordium of the opisthe develops hypoapokinetally behind the posterior part of the adoral zone of membranelles; 3) five frontoventral-transverse cirral anlagen are formed de novo, initially as primary primordia, and develop into 3:3:2:2:1 cirri from left to right, respectively in both dividers; 4) the leftmost frontoventral cirrus is generated from an independently formed cirral anlage in both dividers. In the present work, Chinese and Korean populations of A. leptaspis Fresenius, 1865 were investigated respectively to support the importance of living characteristics in identification of Aspidisca species. The isolation of A. magna and A. leptaspis from other congeners are also firmly demonstrated by the SSU rRNA gene sequence alignments.
延伸閱讀
- Rui, C. X., Yan, Z., FARRAJ, S. A. A., QURAISHY, S. A. A., SEREHY, H. A. E., Chen, S., & RASHEID, K. A. S. A. (2013). Taxonomic Descriptions of Two Marine Ciliates, Euplotes dammamensis n. sp. and Euplotes balteatus (Dujardin, 1841) Kahl, 1932 (Ciliophora, Spirotrichea, Euplotida), Collected from the Arabian Gulf, Saudi Arabia. Acta Protozoologica, 52(2), 73-89. https://doi.org/10.4467/16890027AP.13.008.1087
- Berger, H. (2004). Uroleptopsis Kahl, 1932 (Ciliophora: Hypotricha): Morphology and Cell Division of Type Species, Redefinition, and Phylogenetic Relationships. Acta Protozoologica, 43(2), 99-121. https://www.airitilibrary.com/Article/Detail?DocID=00651583-200406-201012290013-201012290013-99-121
- Song, W. B., Wilbert, N., Chen, Z. G., & Shi, X. L. (2004). Considerations on the Systematic Position of Uronychia and Related Euplotids Based on the Data of Ontogeny and 18S rRNA Gene Sequence Analyses, with Morphogenetic Redescription of Uronychia setigera Calkins, 1902 (Ciliophora: Euplotida). Acta Protozoologica, 43(4), 313-328. https://www.airitilibrary.com/Article/Detail?DocID=00651583-200412-201012290015-201012290015-313-328
- Vdacny, P., & Tirjaková, E. (2012). Taxonomic Revision and Neotypification of Zosterodasys transversus (Kahl, 1928), with Description of a Mirror-Image Doublet (Ciliophora, Phyllopharyngea, Synhymeniida). Acta Protozoologica, 51(1), 39-54. https://doi.org/10.4467/16890027AP.12.004.0387
- Li, L. Q., Huang, J., Song, W. B., Shin, M. K., Rasheid, K. A. S. A., & Berger, H. (2010). Apogastrostyla rigescens (Kahl, 1932) gen. nov., comb. nov. (Ciliophora, Hypotricha): Morphology, Notes on Cell Division, SSU rRNA Gene Sequence Data, and Neotypification. Acta Protozoologica, 49(3), 195-212. https://www.airitilibrary.com/Article/Detail?DocID=00651583-201009-201101060037-201101060037-195-212