Data from: The resurrection of the genus Bergia (Anthozoa, Zoantharia, Parazoanthidae)

The genus Bergia was established by Duchassaing de Fonbressin and Michelotti in 1860, for two species, Bergia catelunaris and B. vialactea. Subsequently, in 1903 Duerden recognized these two species as conspecific, and used B. catelunaris in favour of B. vialactea, and transferred B. catelunaris to the genus Parazoanthus. However, over the last decade, it has been found that the genus Parazoanthus is actually polyphyletic and therefore it has gradually been divided and redefined. Based on phylogenetic analyses, Parazoanthus sensu stricto was recently limited to species which form associations with sponges, but it still comprised of three distinctive and monophyletic subclades. Of these clades, one Parazoanthus clade contains the type species for Parazoanthus, P. axinellae, while another clade was recently described as the genus Umimayanthus based on mitochondrial 16S-rDNA sequences. However, the other remaining Parazoanthus clade contains P. catenularis, the original type species of the genus Bergia. Based on a concatenated set of published data for five molecular markers (18S-rDNA, 28S-rDNA, ITS1/5.8S/ITS2-rDNA, 16S-rDNA and COI-DNA), this study confirms the monophyly of Bergia in the context of Parazoanthidae. The phylogenetic analyses strongly support the resurrection of the genus Bergia as a valid taxonomic unit.

Bergia属（Bergia）由Duchassaing de Fonbressin与Michelotti于1860年建立，当时包含2个物种：Bergia catelunaris及B. vialactea。1903年，Duerden认定这两个物种为同物异名，优先采用B. catelunaris而废弃B. vialactea，并将B. catelunaris转移至副海葵属（Parazoanthus）。然而近十年来的研究发现，副海葵属（Parazoanthus）实际为多系群，因此逐渐被拆分并重新定义。基于系统发育分析，狭义副海葵属（Parazoanthus sensu stricto）近期被限定为与海绵形成共生关系的物种，但其仍包含3个独特的单系亚支。在这些支系中，一个副海葵支系包含副海葵属的模式种P. axinellae，而另一个支系近期依据线粒体16S核糖体DNA（16S-rDNA）序列被建立为Umimayanthus属。剩余的副海葵支系则包含P. catenularis——即Bergia属的原始模式种。本研究基于5个分子标记（18S-rDNA、28S-rDNA、ITS1/5.8S/ITS2-rDNA、16S-rDNA及COI-DNA）的整合公开数据集，在副海葵科（Parazoanthidae）的分类框架下，证实了Bergia属的单系性。系统发育分析结果强力支持恢复Bergia属作为有效分类单元。