Partial re-assessment of the family structure of the Clausocalanoidea (Copepoda: Calanoida) using morphological data
Partial re-assessment of the family structure of the Clausocalanoidea (Copepoda: Calanoida) using morphological data
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DOI：
10.1093/zoolinnean/zly086
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发表时间：
2019-04-01
影响因子：
2.8
通讯作者：
Boxshall, Geoffrey A.
中科院分区：
文献类型：
--
作者：
Bradford-Grieve, Janet M.;Boxshall, Geoffrey A.
通过对非Bradfordian属的分支系统分析，进一步完善了黄花总科的分类。所使用的形态特征之间的同质性普遍干扰了树的推理和我们对所产生的拓扑的支持程度的评估。以前被认为具有系统发育意义的性状似乎是同型的(例如，在第4条腿的髋部出现了大的棘突)。之前没有被认为具有系统发育意义的其他特征，尽管不完全一致，但对这些树的基本拓扑结构做出了贡献。这些雌性特征是：触角祖先节段I、XIII、XV、XXI和XXIII；下颌底和内足节1；上颌外足；上颌前足突1；腿1外足足和腿2内足节。我们以Bradfordian分类群为外群的非Bradfordian‘Clausocalanoidae’的系统发育假说，给出了三个支系的一些信心：Aentideidae Giesbrecht，1893，Clausocalanidae Giesbrecht，1893和Pseudcle clopiidae G.O.Sars，1902，这一结论需要用遗传数据来证实。真甲科总是嵌套在亚科中，而亚科是同源的，并且嵌套在亚科中。该科是一个由多个属组成的分支中的一个末端分支，该属目前被归为该科。
A cladistic analysis of the non-Bradfordian' genera was used to improve the classification of the superfamily Clausocalanoidea. The prevalence of homoplasy among the morphological characters used interfered with tree inference and our assessment of support for the topologies produced. Characters previously thought to have phylogenetic significance appear to be homoplasious (e.g. the presence of large spinules on the coxa of leg 4). Other characters, not previously thought to have phylogenetic significance, contributed to the fundamental topology of the trees even though incompletely congruent. These female characters are the setation of: antennular ancestral segments I, XIII, XV, XXI and XXIII; mandible basis and endopod segment 1; maxillule exopod; the maxilla praecoxal endite 1; and segmentation of the leg 1 exopod and leg 2 endopod. Our phylogenetic hypothesis of the non-Bradfordian' Clausocalanoidea, using Bradfordian' taxa as the outgroup, gives some confidence in three clades: Aetideidae Giesbrecht, 1893, Clausocalanidae Giesbrecht, 1893 and Pseudocyclopiidae G. O. Sars, 1902, a conclusion requiring corroboration with genetic data. The Euchaetidae are always nested within the Aetideidae, and the Stephidae are paraphyletic and nested within the Clausocalanidae. The Mesaiokeratidae is a terminal branch within a clade composed of genera currently grouped as the Stephidae.