Characterization of species diversity of zooplankton is key to understanding, assessing, and predicting the function and future of pelagic ecosystems throughout the global ocean. The marine zooplankton assemblage, including only metazoans, is highly diverse and taxonomically complex, with an estimated ~28,000 species of 41 major taxonomic groups. This review provides a comprehensive summary of DNA sequences for the barcode region of mitochondrial cytochrome oxidase I (COI) for identified specimens. The foundation of this summary is the MetaZooGene Barcode Atlas and Database (MZGdb), a new open-access data and metadata portal that is linked to NCBI GenBank and BOLD data repositories. The MZGdb provides enhanced quality control and tools for assembling COI reference sequence databases that are specific to selected taxonomic groups and/or ocean regions, with associated metadata (e.g., collection georeferencing, verification of species identification, molecular protocols), and tools for statistical analysis, mapping, and visualization. To date, over 150,000 COI sequences for ~ 5600 described species of marine metazoan plankton (including holo- and meroplankton) are available via the MZGdb portal. This review uses the MZGdb as a resource for summaries of COI barcode data and metadata for important taxonomic groups of marine zooplankton and selected regions, including the North Atlantic, Arctic, North Pacific, and Southern Oceans. The MZGdb is designed to provide a foundation for analysis of species diversity of marine zooplankton based on DNA barcoding and metabarcoding for assessment of marine ecosystems and rapid detection of the impacts of climate change.

浮游动物物种多样性的表征对于理解，评估和预测整个全球海洋中上层生态系统的功能和未来至关重要。海洋浮游动物组合（仅包括后生动物）高度多样且分类复杂，估计有41个主要分类组约28,000种。这篇综述提供了已鉴定标本的线粒体细胞色素氧化酶I（COI）条形码区域的DNA序列的全面摘要。此摘要的基础是MetaZooGene条形码图集和数据库（MZGdb），这是一个新的开放访问数据和元数据门户，该门户链接到NCBI GenBank和BOLD数据存储库。MZGdb提供增强的质量控制和工具，用于组装特定于所选生物分类群和/或海洋区域的COI参考序列数据库，以及相关的元数据（例如，收集地理配准，物种鉴定，分子协议验证）和统计分析工具，映射和可视化。迄今为止，可通过MZGdb门户网站获取约5600种描述的海洋后生浮游生物（包括整体和浮游生物）的超过150,000个COI序列。这次审查使用MZGdb作为重要信息的海洋浮游动物和选定区域（包括北大西洋，北极，北太平洋和南大洋）的重要分类组的COI条码数据和元数据的摘要资源。