Phylogenomics and species delimitation for effective conservation of manta and devil rays

Jane Hosegood, Emily Humble, Rob Ogden, Mark de Bruyne, Simon Creer, Guy M. W. Stevens , Mohammed Abudaya, Kim Bassos-Hull, Ramon Bonfil, Daniel Fernando, Andrew D. Foote , Helen Hipperson, Rima W. Jabado, Jennifer Kaden, Muhammad Moazzam, Lauren R. Peel , Stephen Pollett, Alessandro Ponzo , Marloes Poortvliet, Jehad SalahHelen Senn, Joshua D. Stewart , Sabine Wintner, Gary Carvalho

Research output: Contribution to journalArticlepeer-review

Abstract

Practical biodiversity conservation relies on delineation of biologically meaningful units. Manta and devil rays (Mobulidae) are threatened worldwide, yet morphological similarities and a succession of recent taxonomic changes impede the development of an effective conservation strategy. Here, we generate genome-wide single nucleotide polymorphism (SNP) data from a geographically and taxonomically representative set of manta and devil ray samples to reconstruct phylogenetic relationships and infer evaluate species boundaries under the general lineage concept. We show that nominal species units supported by alternative data sources constitute independently evolving lineages, and find robust evidence for a putative new n undescribed species of manta ray in the Gulf of Mexico. Additionally, we uncover substantial incomplete lineage sorting indicating that rapid speciation together with standing variation in ancestral populations has driven phylogenetic uncertainty within Mobulidae. Finally, we detect cryptic diversity in geographically distinct populations, demonstrating that management below the species level may be warranted in certain species. Overall, our study provides a framework for molecular genetic species delimitation that is relevant to wide-ranging taxa of conservation concern, and highlights the potential for genomic data to support effective management,conservation, and law enforcement strategies.
Original languageEnglish
Pages (from-to)4783-4796
JournalMolecular Ecology
Early online date9 Nov 2020
DOIs
Publication statusPublished - Dec 2020

Keywords

  • ddRAD
  • management
  • mobulids
  • single nucleotide polymorphism
  • taxonomy

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