罗 (Ceriantharia:Anthozoa:Cnidaria):新的地位和新的前景
Tina N Molodtsova1, Viktoria N Moskalenko1, Elizabeth V Lipukhin1
1Shirshov Institute of Oceanology RAS, 36 Nakhimovsky Prospect, Moscow 117218, Russia.
Biology
|September 28, 2023
概括
对Cerianthus lloydii的分子分析揭示了不同的北极和欧洲类. 这项研究提出了一个新的属,Synarachnactis,和家庭,Synarachnactidae,这个海洋盆地物种.
科学领域:
- 海洋生物学 海洋生物学
- 分子系统学 分子系统学
- 纳税学是一种分类学.
背景情况:
- 子类Ceriantharia包括古代海洋盆地生物,以双边对称性而闻名.
- 在北极地区报告了四种Ceriantharia物种,包括Cerianthus lloydii,其物种完整性已受到质疑.
- 之前的研究缺乏分子数据,以澄清C. lloydii在其地理范围内的分类学地位.
研究的目的:
- 使用分子数据调查Cerianthus lloydii的物种完整性和遗传位置.
- 为了澄清C. lloydii和Ceriantharia中的相关物种的分类地位.
- 根据分子证据提出一个新的分类学分类.
主要方法:
- 使用18S和细胞染色体氧化酶I (COI) 基因进行分子遗传学分析.
- 测序来自不同地理位置的标本.
- COI序列相似性的比较与Cerianthus.属的类型物种.
主要成果:
- 遗传学重建证实C. lloydii标本形成了一个单一的,高度支持的群体 (>0.98).
- 确定了不同的分类:北欧/黑海/巴伦茨海,白海/卡拉海/拉普特海/伯林海/加拿大北极/拉布拉多海.
- Pachycerianthus borealis 序列形成了C. lloydii 类的第三个兄弟类,C. lloydii 和C. membranaceus之间具有86-87%的COI相似性.
结论:
- 分子数据支持其范围内的C. lloydii种群的独特性.
- 与类型物种C. membranaceus的低序列相似性要求进行分类学修订.
- 一个新的属,Synarachnactis,和家族,Synarachnactidae,被提出以适应C. lloydii.
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