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重新审视Atractoscion macrolepis (Perciformes: Sciaenidae) 的描述:支持全面分类的另一个论点
Gavin Gouws1, Jerraleigh L Kruger2, Malcolm Smale3
1National Research Foundation-South African Institute for Aquatic Biodiversity; Private Bag 1015; Makhanda; 6140; South Africa; Department of Ichthyology and Fisheries Science; Rhodes University; PO Box 94; Makhanda; 6140; South Africa. gavingouws@gmail.com.
Zootaxa
|December 8, 2024
概括
这项研究重新评估了Atractoscion macrolepis和A. aequidens之间的区别,发现以前诊断的meristic特征不可靠. 然而,形态测量和耳石分析提供了可靠的方法来区分这些鱼类.
科学领域:
- 鱼类学 鱼类学 鱼类学
- 纳税学是一种分类学.
- 分子生物学分子生物学
背景情况:
- 在此之前,Atractoscion macrolepis和A. aequidens之间的区别是基于有限的标本和单一的特征特征,即多种横线尺度的数量.
- 潜在的错误识别和被忽视的数据引发了对这些诊断特征可靠性的质疑.
研究的目的:
- 用一个全面的数据集重新检查A. macrolepis和A. aequidens之间的物种区别.
- 为了确定可靠的特征来区分这两种鱼类.
主要方法:
- 分析了来自33个A. aequidens和52个A. macrolepis标本的7个美里斯特字符,24个形态测量和9个奥托利特变量.
- 应用单变量和多变量分析,包括主要组件分析 (PCA) 和区分函数分析 (DFA).
主要成果:
- 两种物种之间没有可靠区分的meristic字符,包括横线尺度,可靠地区分.
- 区分函数分析显示,使用尺寸转换的形态学数据和耳石变量,存在显著的歧视.
- 具体的形态变量 (HL,MCL,PFL,AFL,PLFL) 表达为标准长度 (SL) 的比例,有效地区分了A. aequidens和A. macrolepis.
结论:
- 虽然这项研究并没有质疑A. macrolepis的分类学地位,但它反驳了以前识别的诊断特征.
- 形态学标志,特别是当用SL的比例表示时,为物种识别提供了可靠的手段.
- 提供了Atractoscion属的最新识别密钥,强调了广泛的标本数据的重要性.
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