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首页> 外文期刊>European Journal of Protistology >Morphology and ontogenesis of Lambornella trichoglossa nov spec., a new tetrahymenid ciliate (Protozoa, Ciliophora) from Brasilian tank bromeliads (Bromeliaceae)
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Morphology and ontogenesis of Lambornella trichoglossa nov spec., a new tetrahymenid ciliate (Protozoa, Ciliophora) from Brasilian tank bromeliads (Bromeliaceae)

机译：来自巴西罐形凤梨科的一种新的四膜虫纤毛虫（原生动物，纤毛虫）Lambornella trichoglossa nov spec。的形态学和致瘤性

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This is the second of a series of papers describing the morphology and ontogenesis of new ciliates occurring in the cisterns of tank bromeliads, a group of rosette plants of tropical America, entrapping rainwater between the coalescing leaf axils. The new species described here was discovered in the tanks of ground bromeliads from the east coast (Mata Atlantica) of Brazil, South America, and in tank bromeliads of the Dominican Republic, Caribbean Sea. Its morphology and ontogenesis were investigated on cultivated specimens, using live observation, silver impregnation, and scanning electron microscopy. Morphologically, the new ciliate resembles the tetrahymenine genus Lambornella, while the habit is different in that it does not parasitize and produce cuticular cysts on mosquito larvae. Thus, it could be considered as representative of a new genus. Likewise, the Brazilian and Dominican populations are probably not conspecific. Basically, Lambornella trichoglossa nov. spec. has a tetrahymenid somatic and oral ciliary pattern with characteristics likely diagnostic for the, unfortunately, still insufficiently described type species of Lambomella, viz., an increased number (8) of postoral kineties, a spatulate preoral suture, a curved adoral membranelle 1, a sigmoidal membranelle 2, loop-like intrameridional silverlines, and a synchronous replacement of the parental oral apparatus during cell division, a conspicuous ontogenetic feature. Lambornella trichoglossa differs from the two described congeners mainly by the large size (200 x 50 mum vs. less than or equal to 100 x 50 mum), the fusiform to claviform shape (vs. ovoidal), the location of the contractile vacuole (near mid-body vs. posterior body third), a 25 mum long caudal cilium (vs. lacking), and the arrangement of adoral membranelle 2 (directed to right vs. left). Considering that L. trichoglossa has not been found in Europe, though it is a large, conspicuous ciliate, it might be restricted to South America or Gondwana. [References: 33]
机译：这是描述在罐形凤梨科植物的罐子中出现的新纤毛虫的形态和致瘤作用的系列论文中的第二篇。这里描述的新物种是在南美巴西东海岸（Mata Atlantica）的碎凤梨科鱼缸以及加勒比海多米尼加共和国的凤梨科鱼缸中发现的。使用实时观察，银浸渍和扫描电子显微镜在培养标本上研究了其形态和致瘤性。在形态上，新的纤毛虫类似于四膜虫碱属的兰伯氏菌，而习性则有所不同，因为它不会寄生在蚊虫的幼虫上并产生表皮囊肿。因此，它可以被认为是新属的代表。同样，巴西和多米尼加的人口也不是同种的。基本上，Lambornella trichoglossa nov。规格具有四处有膜的体细胞和口腔睫状纤毛模式，其特征很可能可诊断为Lambomella的描述类型种类不足，即，口腔运动的数量增加了（8），前齿缝线呈缝线状，弯曲的口腔膜1，乙状膜，环状子午线内银线，并在细胞分裂过程中同步更换父母的口腔器具，这是一个显着的个体发育特征。 Lambornella trichoglossa与上述两个同类物的不同之处主要在于尺寸大（200 x 50毫米对小于或等于100 x 50毫米），梭形到锁骨形（相对卵形），收缩液泡的位置（近身体中部与后部分别为第三），25毫米长的尾纤毛（相对于缺少），以及动脉膜2的排列（指向右与向左）。考虑到L. trichoglossa在欧洲尚未发现，尽管它是大型的，显着的纤毛虫，但它可能仅限于南美或冈瓦纳。 [参考：33]

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