A cultivable acoel species from the Mediterranean, Aphanostoma pisae sp nov (Acoela, Acoelomorpha)
A cultivable acoel species from the Mediterranean, Aphanostoma pisae sp nov (Acoela, Acoelomorpha)
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DOI：
10.11646/zootaxa.3941.3.6
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发表时间：
2015-04-01
期刊：
影响因子：
0.9
通讯作者：
Egger, Bernhard
中科院分区：
文献类型：
--
作者：
Zauchner, Thomas;Salvenmoser, Willi;Egger, Bernhard
豌豆丝口线虫 sp.十一月是在比萨（意大利托斯卡纳）利古里克海沿岸发现的一种间质气腔。它属于等径科大科，其特征是雄性交配器官呈圆柱形，具有非吻合的纵向肌纤维。它是地中海第一个被认可的Aphanostoma 物种，在其模式产地可以大量出现（一勺沙子中有数百个标本）。 A. pisae 已在实验室中以硅藻为食进行培养多年。胚胎发育在 20 摄氏度下持续不到两天。我们使用实时观察、矢状切片的光学和电子显微镜以及丝状肌动蛋白和血清素神经系统的染色来提供对新物种的描述，并讨论和更新 Aphanostoma 属和 Praeconvoluta 属的属诊断。
Aphanostoma pisae sp. nov. is an interstitial acoel found at the coast of the Liguric Sea in Pisa (Tuscany, Italy). It belongs to the large family Isodiametridae, characterised by a male copulatory organ with a cylindrical shape and non-anastomising longitudinal muscle fibers. It is the first recognised species of Aphanostoma in the Mediterranean and it can occur in great abundance at its type locality (several hundred specimens in a spoonful of sand). A. pisae has been cultured in the laboratory for several years with diatoms for food. The embryonic development lasts for just under two days at 20 degrees C.We provide a description of the new species using live observations, light and electron microscopy of sagittal sections and stainings of the filamentous actin and the serotonergic nervous system, and we discuss and update the genus diagnoses of the genera Aphanostoma and Praeconvoluta.