对西太平洋和中太平洋海洋物种的DNA条形码参考数据库的评估
Yufei Zhou1, Alejandro Trujillo-González1, Simon Nicol1,2
1Centre for Conservation Ecology and Genomics, University of Canberra, Canberra, ACT, Australia.
PeerJ
|July 18, 2025
概括
太平洋海洋物种的DNA条形码数据库存在重大差距和质量问题. 改善数据策划和测序对于可靠的物种识别和保护工作至关重要.
科学领域:
- 海洋生物学 海洋生物学
- 基因组学就是基因组学.
- 生物信息学是一种生物信息学.
背景情况:
- DNA 条形码依赖于参考数据库来识别物种.
- 这些数据库的质量和覆盖范围至关重要,但在区域范围内往往没有得到评估.
- 西部和中部太平洋 (WCPO) 的海洋生物多样性很高,但测序工作有限.
研究的目的:
- 在NCBI和BOLD数据库中系统评估线粒体细胞染色体c氧化酶子单位I (COI) 条形码覆盖范围和序列质量.
- 为了比较海洋类型和WCPO区域的数据库性能.
- 在现有的DNA条形码资源中识别关键的知识差距和质量问题.
主要方法:
- 开发了一个工作流程来评估COI条形码覆盖范围和序列质量.
- 我们比较了两个主要的DNA条形码数据库:NCBI和BOLD.
- 分析了海洋类型和不同的WCPO区域的数据.
主要成果:
- NCBI 的条形码覆盖率更高,但序列质量低于 BOLD.
- 确定了广泛的质量问题,包括两种数据库中的模两可的核酸,短序列和分类学冲突.
- 在南温带WCPO地区和像Porifera,Bryozoa和Platyhelminthes这样的类中观察到显著的条形码缺陷.
- 在BOLD中使用的条形码识别号码 (BIN) 系统在识别有问题的记录方面表现出实用性.
结论:
- 现有的DNA条形码数据库对WCPO海洋生物多样性有很大的覆盖范围和质量限制.
- 标准化的数据库策划和测序实践对于可靠的DNA条形码是必不可少的.
- 解决这些问题将加强生物多样性监测,保护工作,以及DNA条形码的全球应用.
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