Molecular and taxonomic analyses in troglobiotic Alpioniscus (Illyrionethes) species from the Dinaric Karst (Isopoda: Trichoniscidae)
Molecular and taxonomic analyses in troglobiotic Alpioniscus (Illyrionethes) species from the Dinaric Karst (Isopoda: Trichoniscidae)
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DOI：
10.1093/zoolinnean/zlz056
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发表时间：
2019-11-01
影响因子：
2.8
通讯作者：
Baratti, Mariella
中科院分区：
文献类型：
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作者：
Bedek, Jana;Taiti, Stefano;Baratti, Mariella
物种丰富度的陆地等足类动物是高的Dinaric喀斯特洞穴，其中主机类似于10%的世界上的名义oniscidean troglobions。最广泛的分类群是南欧属Alpioniscus，它由两个亚属组成：Alpioniscus s.s.和伊利里亚涅提斯在这项研究之前，14个名义troglobioic Illyrionethes类群记录从Dinaric喀斯特。我们的分子分析使用两个mitochnodrial DNA（16 S rRNA和COI）片段和核基因（H3）片段在所有已知的Dinaric类群确定了三个不同的谱系：strasseri-，heroldi-和magnus-谱系。我们的研究结果证实了大多数名义物种的有效性。例外是Balthasari，它由两个不同的物种组成，包括Alpioniscus iapodicus和Alpioniscus heroldi，这是波斯尼亚Alpioniscus的并系。的strasseri谱系是高度支持所有系统发育的方法，因此，我们进行了详细的形态学分析，以区分和表征这组的物种。新的形态特征，如身体部分的比例，提出了未来的物种鉴定。此外，本文还重新描述了三个已知种（施特拉氏氏细眼鲷Alpioniscus strasseri，克里斯蒂安细眼鲷Alpioniscus christiani和巴尔塔萨细眼鲷Alpioniscus balthasari），并描述了两个新种（毛细眼鲷Alpioniscus hirci sp. nov.和绒细眼鲷Alpioniscus velebiticus sp. nov.）因此，目前已知的15种Illyrionethes从Dinaric喀斯特。
Species richness of terrestrial isopods is high in caves of the Dinaric Karst, which hosts similar to 10% of the world's nominal oniscidean troglobionts. The most widespread taxon is the southern European genus Alpioniscus, which consists of two subgenera: Alpioniscus s.s. and Illyrionethes. Before this study, 14 nominal troglobiotic Illyrionethes taxa were recorded from the Dinaric Karst. Our molecular analyses using two mitochnodrial DNA (16S rRNA and COI) fragments and a nuclear gene (H3) fragment on all known Dinaric taxa identified three distinct lineages: strasseri-, heroldi- and magnus-lineage. Our results confirmed the validity of most nominal species. The exceptions are Alpioniscus balthasari, which consists of two different species including Alpioniscus iapodicus, and Alpioniscus heroldi, which is paraphyletic with respect to Alpioniscus bosniensis. The strasseri-lineage was highly supported by all phylogenetic methods used; therefore, we performed a detailed morphological analysis to distinguish and characterize the species of this group. New morphological characters, such as body part ratios, are proposed for future species identification. In addition, we redescribe three known species (Alpioniscus strasseri, Alpioniscus christiani and Alpioniscus balthasari) and describe two new ones (Alpioniscus hirci sp. nov. and Alpioniscus velebiticus sp. nov.). As a result, 15 nominal species of Illyrionethes are currently known from the Dinaric Karst.