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首页> 外文期刊>Journal of Clinical Microbiology >Disseminated Mycosis in Veiled Chameleons (Chamaeleo calyptratus) Caused by Chamaeleomyces granulomatis, a New Fungus Related to Paecilomyces viridis
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Disseminated Mycosis in Veiled Chameleons (Chamaeleo calyptratus) Caused by Chamaeleomyces granulomatis, a New Fungus Related to Paecilomyces viridis

机译：沙门菌变色龙（Chamaeleo calyptratus）引起的弥散性真菌病，Chamaeleomyces granulomatis是一种与绿皮拟青霉菌有关的新真菌

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An outbreak of disseminated granulomatous disease occurred in a group of veiled chameleons (Chamaeleo calyptratus) in a zoo collection. An adult female and six offspring developed large granulomas in multiple organs and were euthanized. At necropsy, roughly spherical yellow-to-white nodules 1 to 3 mm in diameter were grossly visible in the liver and other organs. Histopathology revealed fungal elements that were spherical to ovoid in shape, fragments of slender to irregularly swollen hyphae, and occasional conidia produced on phialides. Fungal isolates were initially suspected on the basis of morphology results to represent Paecilomyces viridis, a species known only from one outbreak of fatal mycosis in carpet chameleons (Furcifer lateralis). Data obtained from morphological studies and from phylogenetic analyses of nuclear ribosomal rRNA (rDNA) sequence data revealed the Danish chameleon isolates to be a related undescribed anamorphic species within the family Clavicipitaceae that includes many insect pathogens. Chamaeleomyces granulomatis gen. et sp. nov. is given as the name for the newly described fungus, and P. viridis is transferred to the new genus as Chamaeleomyces viridis comb. nov. Chamaeleomyces species are distinguished by having basally swollen phialides tapering to a narrow neck, conidia in fragile chains, and pale green to greenish-gray colonies. Both species are dimorphic, producing a transitory yeast stage characterized by ovoid-to-subglobose or subcylindrical yeast-like cells. Chamaeleomyces species appear to be rare but aggressive pathogens of chameleons.
机译：在动物园的一组面纱变色龙（ Chamaeleo calyptratus ）中爆发了传播性肉芽肿病。成年女性和六个后代在多个器官中发展出大肉芽肿，并被安乐死。尸检时，在肝脏和其他器官中大致可见直径为1至3毫米的大致球形的黄白色结节。组织病理学发现，球形的到球形的真菌元素，菌丝的细长到不规则肿胀的碎片，以及在分枝杆菌上偶生的分生孢子。最初，根据形态学结果怀疑是真菌分离物代表青绿拟杆菌（Paemcilomyces viridis），这是一种仅因地毯变色龙一次致命的真菌病暴发才知道的物种。从形态学研究和核糖核糖体rRNA（rDNA）序列数据的系统发育分析获得的数据表明，丹麦变色龙分离株是包括许多昆虫病原体的锁骨科的一个未描述的相关变形种。 肉芽胞杆菌 gen。等。十一月作为新描述的真菌的名称给出，而 P。 viridis 以 Chamaeleomyces viridis 梳子转移到新属。十一月 Chamaeleomyces 物种的特征在于，其基部溶胀的phialides逐渐变细到狭窄的颈部，分生孢子在脆弱的链中，从浅绿色到绿色到灰色的菌落。这两个物种都是双态的，产生一个过渡的酵母阶段，其特征为卵球形至亚球状或亚圆柱形的酵母样细胞。 Chamaeleomyces 物种似乎很少见，但具有变色龙的攻击性病原体。

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