Salakij Jarernsak, Lertwatcharasarakul Preeda, Kasorndorkbua Chaiyan, Salakij Chaleow
Department of Large Animal and Wildlife Clinical Sciences, Faculty of Veterinary Medicine, Kasetsart University, Kamphaengsaen, Nakorn Pathom 73140, Thailand.
Jpn J Vet Res. 2012 Aug;60(2-3):105-9.
A wild-caught, juvenile Shikra (Accipiter badius) was evaluated for rehabilitation at the Kasetsart University Raptor Rehabilitation Unit (KURRU) with a history of weakness. Plasmodium sp. was observed by both light and electron microscopy in blood obtained on day 1 of evaluation. Based on the appearance of erythrocytic meronts and gametocytes, the parasites were defined as Plasmodium (Giovannolaia) circumflexum. The sequence analysis of the mitochondrial cytochrome b gene from the plasmodia was closely related to parasites found in the Grey-headed woodpecker from Myanmar and the Brown hawk-owl from Singapore. Transmission electron microscopic examination revealed organelles in the haematozoa and heterophils that ingested the plasmodia. This is the first recorded case of Plasmodium circumflexum in a wild Shikra. This note emphasises the molecular characterisation and ultra-structure of the haematozoa.
一只野外捕获的幼年褐耳鹰（Accipiter badius）因身体虚弱被送往朱拉隆功大学猛禽康复中心（KURRU）进行康复评估。在评估的第1天采集的血液中，通过光学显微镜和电子显微镜均观察到疟原虫属。根据红细胞裂殖体和配子体的形态，这些寄生虫被鉴定为环形疟原虫（Giovannolaia circumflexum）。对疟原虫线粒体细胞色素b基因的序列分析表明，其与在缅甸灰头啄木鸟和新加坡褐鹰鸮体内发现的寄生虫密切相关。透射电子显微镜检查发现了疟原虫以及吞噬疟原虫的异嗜性粒细胞中的细胞器。这是野生褐耳鹰体内首次记录到环形疟原虫感染的病例。本报告着重介绍了疟原虫的分子特征和超微结构。
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