On a New Seison Grube, 1861 from Coastal Waters of Kenya, with a Reappraisal of the Classification of the Seisonida (Rotifera)
On a New Seison Grube, 1861 from Coastal Waters of Kenya, with a Reappraisal of the Classification of the Seisonida (Rotifera)
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1861 年来自肯尼亚沿海水域的新 Seison Grube，以及对 Seisonida（轮虫纲）分类的重新评估
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
P. Funch
中科院分区：
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作者：
M. Sørensen;H. Segers;P. Funch
在肯尼亚加齐湾发现了神秘的星轮虫科海洋生代轮虫的新种后，我们重新评估了该类群的分类。迄今为止，该分类单元仅包含 2 个物种，即。 Seison nebaliae 和 S. annulatus，两者都生活在 Nebalia 属的甲壳纲动物中。新物种，Seison africanus sp。 11月，通过其物种特异性的营养形态和相对较小的尺寸进行诊断。与其他 2 个已知的 Seisonid 物种的比较揭示了 S. africanus sp. 之间的姐妹群关系。十一月和 S. nebaliae，基于营养结构的相似性，以及相应的假设的进食模式和与宿主的关系。这两个共生姐妹类群和外寄生环纹环纹藻之间的根本差异促使人们重新评估这些动物的属属分类。因此，我们建议重建Paraseison Plate, 1887属，以容纳P. annulatus (Claus, 1876) (comb. nov.)。
On occasion of the discovery of a new species of a marine epizoic rotifer of the enigmatic Seisonidae, from Gazi Bay in Kenya, we reassessed the classification of the group. The taxon was until now known to contain only 2 species, viz. Seison nebaliae and S. annulatus, both of which live attached to Crustacea of the genus Nebalia. The new species, Seison africanus sp. nov., was diagnosed by its species-specific trophi morphology and relatively small size. A comparison with the 2 other known seisonid species reveals a sister group relationship between S. africanus sp. nov. and S. nebaliae, based on similarities in trophi structure and, accordingly, an assumed feeding mode and relationship with their hosts. The fundamental differences between these 2 commensal sister taxa and the ectoparasitic S. annulatus prompted a reevaluation of the generic classification of these animals. Accordingly, we propose to reestablish the genus Paraseison Plate, 1887 in order to accommodate P. annulatus (Claus, 1876) (comb. nov.).