当前位置: X-MOL 学术Invertebr. Syst. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Molecular phylogeny and biogeography of the temperate Gondwanan family Triaenonychidae (Opiliones : Laniatores) reveals pre-Gondwanan regionalisation, common vicariance, and rare dispersal
Invertebrate Systematics ( IF 2.2 ) Pub Date : 2020-01-01 , DOI: 10.1071/is19069
Caitlin M. Baker , Kate Sheridan , Shahan Derkarabetian , Abel Pérez-González , Sebastian Vélez , Gonzalo Giribet

Abstract. Triaenonychidae Sørensen in L. Koch, 1886 is a large family of Opiliones with ∼480 described species broadly distributed across temperate forests in the Southern Hemisphere. However, it remains poorly understood taxonomically, as no comprehensive phylogenetic work has ever been undertaken. In this study we capitalise on samples largely collected by us during the last two decades and use Sanger DNA-sequencing techniques to produce a large phylogenetic tree with 300 triaenonychid terminals representing nearly 50% of triaenonychid genera and including representatives from all the major geographic areas from which they are known. Phylogenetic analyses using maximum likelihood and Bayesian inference methods recover the family as diphyletic, placing Lomanella Pocock, 1903 as the sister group to the New Zealand endemic family Synthetonychiidae Forster, 1954. With the exception of the Laurasian representatives of the family, all landmasses contain non-monophyletic assemblages of taxa. To determine whether this non-monophyly was the result of Gondwanan vicariance, ancient cladogenesis due to habitat regionalisation, or more recent over-water dispersal, we inferred divergence times. We found that most divergence times between landmasses predate Gondwanan breakup, though there has been at least one instance of transoceanic dispersal – to New Caledonia. In all, we identify multiple places in the phylogeny where taxonomic revision is needed, and transfer Lomanella outside of Triaenonychidae in order to maintain monophyly of the family.

中文翻译:

温带冈瓦纳家族 Triaenonychidae (Opiliones : Laniatores) 的分子系统发育和生物地理学揭示了前冈瓦纳地区的区域化、共同的变异和罕见的分散

摘要。Triaenonychidae Sørensen in L. Koch, 1886 是 Opiliones 的一个大家族,大约有 480 种描述的物种,广泛分布在南半球的温带森林中。然而,它在分类学上仍然知之甚少,因为从未进行过全面的系统发育工作。在这项研究中,我们利用过去 20 年大量收集的样本,并使用 Sanger DNA 测序技术生成了一个大型系统发育树,其中包含 300 个 triaenonychid 终端,代表了近 50% 的 triaenonychid 属,包括来自所有主要地理区域的代表他们是众所周知的。使用最大似然和贝叶斯推理方法进行的系统发育分析将家族恢复为双系群,将 Lomanella Pocock、1903 年作为新西兰特有家族 Synthetonychiidae Forster 的姊妹组,1954 年。除了该家族的劳亚人代表外,所有陆地都包含非单系群的分类群。为了确定这种非单系性是否是冈瓦纳变异、栖息地区域化导致的古老分支发生或最近的水上扩散的结果,我们推断了发散时间。我们发现大部分大陆之间的分化时间早于冈瓦纳大陆分裂,尽管至少有一次跨洋扩散的例子——新喀里多尼亚。总之,我们确定了系统发育中需要进行分类学修订的多个位置,并将 Lomanella 转移到 Triaenonychidae 之外以保持该科的单一性。所有陆地都包含非单系群的分类群。为了确定这种非单系性是否是冈瓦纳变异、栖息地区域化导致的古老分支发生或最近的水上扩散的结果,我们推断了发散时间。我们发现大部分大陆之间的分化时间早于冈瓦纳大陆分裂,尽管至少有一次跨洋扩散的例子——新喀里多尼亚。总之,我们确定了系统发育中需要进行分类学修订的多个位置,并将 Lomanella 转移到 Triaenonychidae 之外以保持该科的单一性。所有陆地都包含非单系群的分类群。为了确定这种非单系性是否是冈瓦纳变异、栖息地区域化导致的古老分支发生或最近的水上扩散的结果,我们推断了发散时间。我们发现大部分大陆之间的分化时间早于冈瓦纳大陆分裂,尽管至少有一次跨洋扩散的例子——新喀里多尼亚。总之,我们确定了系统发育中需要进行分类学修订的多个位置,并将 Lomanella 转移到 Triaenonychidae 之外以保持该科的单一性。我们推断发散时间。我们发现大部分大陆之间的分化时间早于冈瓦纳大陆分裂,尽管至少有一次跨洋扩散的例子——新喀里多尼亚。总之,我们确定了系统发育中需要进行分类学修订的多个位置,并将 Lomanella 转移到 Triaenonychidae 之外以保持该科的单一性。我们推断发散时间。我们发现大部分大陆之间的分化时间早于冈瓦纳大陆分裂,尽管至少有一次跨洋扩散的例子——新喀里多尼亚。总之,我们确定了系统发育中需要进行分类学修订的多个位置,并将 Lomanella 转移到 Triaenonychidae 之外以保持该科的单一性。
更新日期:2020-01-01
down
wechat
bug