TY - JOUR T1 - Standardized nuclear markers advance metazoan taxonomy JF - bioRxiv DO - 10.1101/2021.05.07.443120 SP - 2021.05.07.443120 AU - Lars Dietz AU - Jonas Eberle AU - Christoph Mayer AU - Sandra Kukowka AU - Claudia Bohacz AU - Hannes Baur AU - Marianne Espeland AU - Bernhard A. Huber AU - Carl Hutter AU - Ximo Mengual AU - Ralph S. Peters AU - Miguel Vences AU - Thomas Wesener AU - Keith Willmott AU - Bernhard Misof AU - Oliver Niehuis AU - Dirk Ahrens Y1 - 2021/01/01 UR - http://biorxiv.org/content/early/2021/05/08/2021.05.07.443120.abstract N2 - Species are the fundamental units of life and their recognition is essential for science and society. DNA barcoding, the use of a single and often mitochondrial gene, has been increasingly employed as a universal approach for the identification of animal species. However, this approach faces several challenges. Here, we demonstrate with empirical data from a number of metazoan animal lineages that multiple nuclear-encoded markers, so called universal single-copy orthologs (USCOs) performs much better than the single barcode gene to discriminate closely related species. Overcoming the general shortcomings of mitochondrial DNA barcodes, USCOs also accurately assign samples to higher taxonomic levels. These loci thus provide a powerful and unifying framework for species delimitation which considerably improves the DNA-based inference of animal species.Competing Interest StatementThe authors have declared no competing interest. ER -