Kaga Tatsuya
Laboratory of Marine Biology and Biodiversity (Systematic Ichthyology), Graduate School of Fisheries Sciences, Hokkaido; University, 3-1-1 Minato-cho, Hakodate, Hokkaido 041-8611, Japan; Osaka Animal Plants Ocean College, 1-7-3 Sangenyahigashi, Taisho, Osaka 551-0002, Japan.
Zootaxa. 2013;3642:1-105. doi: 10.11646/zootaxa.3642.1.1.
The phylogenetic relationships of the family Sillaginidae are inferred based on morphological characters. The Sillaginidae is revealed as being a monophyletic group supported by 16 synapomorphies such as shortened segments on the first soft ray of pelvic fin and the adductor mandibulae section A2 covering section A1 laterally. The characters recognized in 24 transformation series were used for the phylogenetic analysis to reconstruct the interrelationships of the family. Twelve equally most parsimonious trees were obtained in the analysis. A strict consensus tree from the 12 trees was adopted as representing the phylogenetic relationships of the family Sillaginidae. Although reversals and character changes to other derived conditions are recognized, it is inferred that five characters additionally support the monophyly of the Sillaginidae. The family Sillaginidae is redefined based on the synapomorphies supporting its monophyly for the first time. In the new classification proposed, the Sillaginidae comprises the following five genera: Sillago, Sillaginopsis, Sillaginodes, Sillaginopodys, and Sillaginops gen. nov. A key to identification of the genera of Sillaginidae is provided. The family Sillaginidae contains two groups having different evolutionary trends in the reconstructed phylogeny of the family. The first group, including Sillaginopsis, Sillaginodes, Sillaginopodys, and Sillaginops gen. nov., has a trend towards reducing the swimbladder; and the second group, including only Sillago, has a trend towards further refining the swimbladder.
基于形态特征推断了银鲈科的系统发育关系。银鲈科被揭示为一个单系类群，由16个共衍征支持，如腹鳍第一软条上的节段缩短以及下颌收肌A2部分在侧面覆盖A1部分。在24个性状转变系列中识别出的特征用于系统发育分析，以重建该科的相互关系。分析中获得了12棵同等简约的树。采用这12棵树的严格合意树来代表银鲈科的系统发育关系。尽管认识到存在反向演化和向其他衍生状态的性状变化，但推断另外有5个性状支持银鲈科的单系性。首次基于支持其单系性的共衍征对银鲈科进行了重新定义。在提出的新分类中，银鲈科包括以下五个属：银鲈属、似银鲈属、银身鲈属、异鳍银鲈属和新属银拟鲈属。提供了银鲈科各属的鉴别检索表。在重建的银鲈科系统发育中，该科包含两组具有不同进化趋势的类群。第一组包括似银鲈属、银身鲈属、异鳍银鲈属和新属银拟鲈属，具有鳔退化的趋势；第二组仅包括银鲈属，具有鳔进一步精细化的趋势。
