Amoudi Mikky A, Alyousif Mohamed S, Saifi Muheet A, Alanazi Abdullah D
Zoology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
Department of Biological Sciences, Faculty of Science and Humanities, Shaqra University, P.O. Box 1040, Ad-Dawadimi 11911, Saudi Arabia.
Saudi J Biol Sci. 2015 May;22(3):312-6. doi: 10.1016/j.sjbs.2014.10.006. Epub 2014 Oct 28.
Fallisia arabica n. sp. was described from peripheral blood smears of the Skink lizard, Scincus hemprichii from Jazan Province in the southwest of Saudi Arabia. Schizogony and gametogony take place within neutrophils in the peripheral blood of the host. Mature schizont is rosette shaped 17.5 ± 4.1 × 17.0 ± 3.9 μm, with a L/W ratio of 1.03(1.02-1.05) μm and produces 24(18-26) merozoites. Young gametocytes are ellipsoidal, 5.5 ± 0.8 × 3.6 ± 0.5 μm, with a L/W of 1.53(1.44-1.61) μm. Mature macrogametocytes are ellipsoidal, 9.7 ± 1.2 × 7.8 ± 1.0 μm, with a L/W of 1.24(1.21-1.34) μm and microgametocytes are ellipsoidal, 7.0 ± 1.1 × 6.8 ± 0.9 μm. with a L/W of 1.03(1.01-1.10) μm. In comparison to the described Fallisia species, this new taxon has rosette schizonts and is larger than F. dominicensis, in Hispaniola, F. bipocrati, F. poecilopi, in Panama, F. thecadactyli in Venezuela, and F. effusa, F. simplex, F. modesta, in Brazil. F. arabica has fewer merozoites than F. effusa, F. poecilopi, F. thecadactyli and F. siamense in Thailand. This new species has more merozoites than F. dominicensis and F. modesta. All of these species belong to diverse saurian families (Agamidae, Gekkonidae, Polychrotidae, Scincidae and Teiidae) parasitize only thrombocytes or lymphocytes and some species parasitize immature erythroid cells and leucocytes.
阿拉伯法氏虫新种（Fallisia arabica n. sp.）是从沙特阿拉伯西南部吉赞省的亨氏沙蜥（Scincus hemprichii）的外周血涂片描述而来。裂体生殖和配子生殖发生在宿主外周血的中性粒细胞内。成熟裂殖体呈玫瑰花结形，大小为17.5 ± 4.1 × 17.0 ± 3.9μm，长宽比为1.03(1.02 - 1.05)μm，产生24(18 - 26)个裂殖子。年轻配子体呈椭圆形，大小为5.5 ± 0.8 × 3.6 ± 0.5μm，长宽比为1.53(1.44 - 1.61)μm。成熟大配子体呈椭圆形，大小为9.7 ± 1.2 × 7.8 ± 1.0μm，长宽比为1.24(1.21 - 1.34)μm，小配子体呈椭圆形，大小为7.0 ± 1.1 × 6.8 ± 0.9μm，长宽比为1.03(1.01 - 1.10)μm。与已描述的法氏虫物种相比，这个新分类单元具有玫瑰花结形裂殖体，且比多米尼加法氏虫（F. dominicensis，在伊斯帕尼奥拉岛）、双冠法氏虫（F. bipocrati）、多斑法氏虫（F. poecilopi，在巴拿马）、委内瑞拉的指趾法氏虫（F. thecadactyli）以及巴西的疏松法氏虫（F. effusa）、简单法氏虫（F. simplex）、谦逊法氏虫（F. modesta）都大。阿拉伯法氏虫的裂殖子比泰国的疏松法氏虫、多斑法氏虫、指趾法氏虫和暹罗法氏虫（F. siamense）少。这个新物种的裂殖子比多米尼加法氏虫和谦逊法氏虫多。所有这些物种都属于不同的蜥蜴科（鬣蜥科、壁虎科、变色蜥科、石龙子科和美洲蜥蜴科），仅寄生于血小板或淋巴细胞，有些物种还寄生于未成熟的红细胞和白细胞。
