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珍しい中型ティラノサウルス類の骨?…北海道 (読売新聞)

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Entamoeba marina n. sp.; a New Species of Entamoeba Isolated From Tidal Flat Sediment of Iriomote Island, Okinawa, Japan.

著者 Shiratori T , Ishida KI
J Eukaryot Microbiol.2015 Oct 10 ; ():.
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The genus Entamoeba includes anaerobic lobose amoebae, most of which are parasites of various vertebrates and invertebrates. We report a new Entamoeba species, E. marina n. sp. that was isolated from a sample of tidal flat sediments collected at Iriomote Island, Okinawa, Japan. Trophozoites of E. marina were 12.8-32.1 μm in length and 6.8-15.9 μm in width, whereas the cysts were 8.9-15.8 μm in diameter and contained four nuclei. The E. marina cells contained a rounded nucleus with a small centric karyosome and uniformly arranged peripheral chromatin. Although E. marina is morphologically indistinguishable from other tetranucleated cyst-forming Entamoeba species, E. marina can be distinguished from them based on the combination of molecular phylogenetic analyses using SSU rDNA gene and the difference of collection site. Therefore, we propose E. marina as a new species of the genus Entamoeba. This article is protected by copyright. All rights reserved.
PMID: 26452446 [PubMed - as supplied by publisher]
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