- 期刊
- OpenAccess
Morphology and Morphogenesis of Two Marine Ciliates, Pseudokeronopsis pararubra sp. n. and Amphisiella annulata from China and Japan (Protozoa: Ciliophora)
並列摘要
The morphology and the morphogenesis of two hypotrich ciliates, Pseudokeronopsis pararubra sp. n. and Amphisiella annulata, collected from the coastal waters off Qingdao (Tsingtao), China and Nagasaki, Japan were studied using live observation and protargol impregnation. Based on current investigations, descriptions of these two species are provided and comparisons with their congeners are given. Diagnosis for Pseudokeronopsis pararubra sp. n.: Marine Pseudokeronopsis, long elliptical in outline, 180-350×50-90 μm in vivo and dark reddish in colour. Ciliature comprising: 64-92 adoral membranelles; bicorona of 15-26 frontal cirri; 1 buccal and 2 frontoterminal cirri; 7-11 transverse cirri; two midventral rows comprising 62-93 cirri and extending to transverse cirri; 48-79 left and 46-80 right marginal cirri; 5-8 dorsal kineties. Numerous (＞100) macronuclear segments. Two types of cortical granules: one orange-red pigment, mainly grouped around cirri and dorsal bristles; the other, colourless and blood-cell-shaped, lying just beneath the former and densely distributed. The morphogenetic process corresponds well with those of its congeners. The most notable point is that the fronto-midventral transverse cirral anlagen never develop in connection with new oral primordium at posterior portion during divisional process in the proter. Supplementary comparison of Amphisiella annulata with some marine congeners has been provided in this study. Some morphogenetic and reorganizational stages show that its stomatogenesis seems to be similar to that of its congeners, i.e. the oral primordium originates parakinetally from the amphisiellid median cirral row (ACR) in the opisthe, and the old adoral zone of membranelles seems to be retained completely by the proter. Usually only 6 cirral anlagen (including the anlage for undulating membrane) develop. In the proter, the undulating membranes, the buccal cirrus and cirri left of the ACR provides three streaks, other two anlagen derive from the ACR. In the opisthe, the oral primordium produces the anlage for the undulating membranes and very likely three cirral streaks; the other two anlagen also occur within ACR. The new ACR is formed by alignment of the two rightmost cirral anlagen.
延伸閱讀
- 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
- Jung, J. H., Park, K. M., & Min, G. S. (2014). Morphology and Molecular Phylogeny of Pseudouroleptus jejuensis nov. spec., a New Soil Ciliate (Ciliophora, Spirotrichea) from South Korea. Acta Protozoologica, 53(2), 195-206. https://doi.org/10.4467/16890027AP.14.016.1597
- PAN, X. M., Huang, J., Fan, X. P., Ma, H. G., RASHEID, K. A. S. A., MIAO, M., & Gao, F. (2015). Morphology and Phylogeny of Four Marine Scuticociliates (Protista, Ciliophora), with Descriptions of Two New Species: Pleuronema elegans spec. nov. and Uronema orientalis spec. nov.. Acta Protozoologica, 54(1), 31-43. https://doi.org/10.4467/16890027AP.15.003.2190
- Gong, J., Lin, X. F., & Song, W. B. (2003). Redescription of a Poorly-known Marine Cyrtophorid Ciliate, Dysteria pusilla (Claparède et Lachmann, 1859) (Protozoa: Ciliophora: Cyrtophorida) from Qingdao, China. Acta Protozoologica, 42(3), 215-221. https://www.airitilibrary.com/Article/Detail?DocID=00651583-200309-201012290010-201012290010-215-221
- Lin, X. F., Song, W. B., Wilbert, N., & Warren, A. (2005). Two New Marine Pleurostomatid Ciliates from China, Loxophyllum jinni and L. qiuianum (Ciliophora: Pleurostomatida). Acta Protozoologica, 44(2), 147-157. https://www.airitilibrary.com/Article/Detail?DocID=00651583-200506-201012290017-201012290017-147-157