da Silva João Paulo C B, Datovo Aléssio, Johnson G David
Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brazil.
Laboratório de Ictiologia, Museu de Zoologia da Universidade de São Paulo, São Paulo, SP, Brazil.
J Morphol. 2019 Jul;280(7):934-947. doi: 10.1002/jmor.20991. Epub 2019 Apr 23.
A cladistic analysis of the eel families Derichthyidae and Colocongridae is herein proposed for the first time on the basis of morphological data. We discovered dozens of new phylogenetic characters derived from a detailed analysis of the pectoral skeleton, an anatomical system neglected by most previous studies. Our maximum parsimony analysis indicates that Colocongridae sensu lato is paraphyletic, with its two constituent genera Coloconger and Congriscus appearing as successive sister groups of derichthyids. Monophyly of the family Derichthyidae, which has been questioned by some studies, is herein strongly supported by 10 unambiguous synapomorphies. We also stress the importance of the appendicular skeleton as a useful source of phylogenetic information for the resolution of systematic problems within Anguilliformes.
本文首次基于形态学数据对海鳝科（Derichthyidae）和长颌海鳝科（Colocongridae）进行支序分析。通过对胸鳍骨骼的详细分析，我们发现了数十个新的系统发育特征，而胸鳍骨骼这一解剖系统在以往大多数研究中都被忽视了。我们的最大简约法分析表明，广义的长颌海鳝科是并系群，其两个组成属长颌海鳝属（Coloconger）和长吻海鳝属（Congriscus）作为海鳝科鱼类的连续姐妹群出现。海鳝科的单系性在一些研究中受到质疑，但本文通过10个明确的共衍征有力地支持了这一点。我们还强调了附肢骨骼作为解决鳗鲡目系统发育问题的有用系统发育信息来源的重要性。
