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A new oligotrich (Ciliophora, Oligotrichia) from Argentina, with redefinition of Novistrombidium Song and Bradbury.
European Journal of Protistology ( IF 2.9 ) Pub Date : 2019-02-26 , DOI: 10.1016/j.ejop.2019.02.006
Gabriela Cristina Küppers 1 , Thiago da Silva Paiva 2 , Bárbara do Nascimento Borges 3 , Elisa Raquel Alfaro 1 , María Cristina Claps 4
Affiliation  

A new oligotrich similar to Novistrombidium was discovered in plankton samples from an artificial tributary of the Salado River, Buenos Aires province, Argentina, in summer 2010. Propecingulum fistoleramalliei sp. n. has an obovate and anteriorly truncated body, with a conspicuous ventral furrow, is flattened ventrally, and has a prominent right apical protrusion. It temporarily attaches to the substratum by a posterior mucous thread. Rod-shaped extrusomes arranged equidistantly and insert directly above the girdle kinety. The macronucleus is globular to ellipsoidal. The contractile vacuole is located in the left, anterior quarter of the cell and the adoral zone is composed of 30–35 collar, 9–14 buccal, and two thigmotactic membranelles. The girdle kinety is dextrally spiraled and ventrally open; the ventral kinety is posterior to anterior end of the girdle kinety. The oral primordium develops posterior to the right thigmotactic membranelle and anterior the stripe of extrusomes above left, lateral portion of the girdle kinety. The SSUrDNA phylogeny confirms one more time that Novistrombidium is not monophyletic; consequently, we elevate the subgenus Propecingulum up to genus rank and redefine the genus Novistrombidium.



中文翻译:

来自阿根廷的一种新的寡聚寡糖(Ciliophora,Oligotrichia),重新定义了Novistrombidium Song和Bradbury。

2010年夏季,在阿根廷布宜诺斯艾利斯省萨洛多河的一个人工支流中,从浮游生物样品中发现了一种类似于诺维菌素的寡聚体。sp。。有一个倒卵形的和前截断的身体,有明显的腹沟,腹面扁平,并有一个突出的右心尖突起。它通过后粘液线暂时附着在基底上。杆状挤出物等距排列并直接插入腰带的上方。大核是球形的到椭圆形的。收缩液泡位于细胞的左前四分之一处,其动脉区由30–35个颈圈,9–14个颊侧和两个拟趋化膜团组成。腰带运动是右旋的,腹侧开放。腹运动在腰带运动的前端之前。口腔原基在右三角运动膜的后方发展,并在腰带运动的左,外侧部分上方的挤压物条纹之前发展。Novistrombidium不是单系的;因此,我们将Propecingulum属提升到了属,并重新定义了Novistrombidium属。

更新日期:2019-02-26
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