Turner G F, Crampton D A, Rusuwa B, Hooft van Huysduynen A, Svardal H
School of Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW UK.
Vertebrates Division, Natural History Museum, Cromwell Road, London, SW7 5BD UK.
Hydrobiologia. 2023;850(10-11):2165-2175. doi: 10.1007/s10750-022-05025-1. Epub 2022 Oct 27.
The taxonomic status of the zooplanktivorous cichlids and has been confused since their original descriptions by lles in 1960. Whilst two forms of , 'Kaduna' and 'Kajose', were distinguished in the type material, has not been positively identified since its original description. Here we re-examined the types as well as 54 recently collected specimens from multiple sampling locations. Genome sequencing of 51 recent specimens revealed two closely related but reciprocally monophyletic clades. Geometric morphological analysis indicated that one clade morphologically encompasses the type specimens of identified by Iles as the Kaduna form, including the holotype, whilst the other clade encompasses not only the paratypes identified as the Kajose form, but also the type series of . Given that all three forms in Iles's type series are from the same locality, that there are no meristic or character states to differentiate them and that there are no records of adult male in breeding colours, we conclude that the Kajose form previously identified as represents relatively deeper bodied sexually active or maturing individuals of .
The online version contains supplementary material available at 10.1007/s10750-022-05025-1.
自1960年伊尔斯首次描述以来，食浮游动物丽鱼科鱼类的分类地位一直存在混淆。虽然在模式标本中区分出了两种形式的“卡杜纳”和“卡乔塞”，但自最初描述以来，尚未得到明确鉴定。在这里，我们重新检查了模式标本以及从多个采样地点最近收集的54个标本。对51个近期标本的基因组测序揭示了两个密切相关但相互单系的分支。几何形态分析表明，一个分支在形态上包含了伊尔斯鉴定为卡杜纳形式的模式标本，包括正模标本，而另一个分支不仅包含鉴定为卡乔塞形式的副模标本，还包含的模式系列。鉴于伊尔斯模式系列中的所有三种形式都来自同一地点，没有可区分它们的分节特征或性状状态，也没有成年雄性处于繁殖颜色的记录，我们得出结论，先前鉴定为的卡乔塞形式代表了相对体型较深的性活跃或成熟个体。
在线版本包含可在10.1007/s10750-022-05025-1获取的补充材料。
