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Morphology, Biometry and Distribution of Difflugia biwae Kawamura, 1918 (Protozoa: Rhizopoda)
並列摘要
The freshwater testate amoeba Difflugia biwae Kawamura, 1918, isolated from Mulan Lake, Hubei Province, China is investigated using light microscopy and scanning electron microscopy. The morphology, biometry and distribution of this little known species are supplied. After careful comparison with three other similar species, including D. delicatula Gauthier-Lièvre et Thomas, D. elegans Penard and D. oblonga caudata Štĕpánek, we believe that the characteristics of smooth fusiform shell, conspicuous great collar flare (always larger than body-width) around the aperture, constriction behind the aperture and a somewhat curved aboral horn set D. biwae apart from all other Difflugia species. This species shows a great diversity in total length, collar height and aboral horn length which have high variability (CV between 11.76 and 24.52). However, body width, collar diameter, neck width, body length and aperture diameter are fairly constant with low variability (CV between 5.34 and 8.79) which shows a remarkable uniformity of D. biwae. Also, the size frequency distributions of both body width and body length yield bell-shaped (normally distributed) curves and indicate that D. biwae is a size-monomorphic species, characterized by a main-size class and a small size range. D. biwae is probably endemic to East Asia (China and Japan) because it has such a large size (165-306 μm) that it would have been easily found in Europe and North America, if it were there. Consequently, D. biwae must have a restricted geographical distribution, disproving the old hypothesis that microscopic organisms are cosmopolitan.
延伸閱讀
- Shi, X. L., Warren, A., & Song, W. B. (2002). Studies on the Morphology and Morphogenesis of Allotricha curdsi sp. n. (Ciliophora: Hypotrichida). Acta Protozoologica, 41(4), 397-405. https://www.airitilibrary.com/Article/Detail?DocID=00651583-200212-201012290007-201012290007-397-405
- 林鳳琪、邱一中、徐孟愉、王清玲（2010）。Morphological Identification of Thrips Larvae (Insecta: Thysanoptera)。台灣農業研究，59(3)，151-164。https://doi.org/10.6156/JTAR/2010.05903.02
- 錢景秦、張淑貞（2007）。Morphology, Life History and Life Table of Liriomyza sativae (Diptera: Agromyzidae)。台灣昆蟲，27(3)，207-227。https://doi.org/10.6661/TESFE.2007017
- Qin, Y., Qiu, Z., Shao, C., Warren, A., & Shen, Z. (2011). Morphological Redescription and Morphogenesis of Urosoma macrostyla (Wrześniowski, 1866) Berger, 1999 (Ciliophora, Hypotrichida). Acta Protozoologica, 50(3), 163-174. https://www.airitilibrary.com/Article/Detail?DocID=00651583-201112-201205160018-201205160018-10-21
- Naqvi, I., Gupta, R., Borgohain, P., & Sapra, G. R. (2006). Morphology and Morphogenesis of Rubrioxytricha indica n. sp. (Ciliophora: Hypotrichida). Acta Protozoologica, 45(1), 53-64. https://www.airitilibrary.com/Article/Detail?DocID=00651583-200603-201012290020-201012290020-53-64