A new species of eagle ray Aetobatus narutobiei from the Northwest Pacific: an example of the critical role taxonomy plays in fisheries and ecological sciences

PLoS One. 2013 Dec 31;8(12):e83785. doi: 10.1371/journal.pone.0083785. eCollection 2013.

Abstract

Recent taxonomic and molecular work on the eagle rays (Family Myliobatidae) revealed a cryptic species in the northwest Pacific. This species is formally described as Aetobatus narutobiei sp. nov. and compared to its congeners. Aetobatus narutobiei is found in eastern Vietnam, Hong Kong, China, Korea and southern Japan. It was previously considered to be conspecific with Aetobatus flagellum, but these species differ in size, structure of the NADH2 and CO1 genes, some morphological and meristic characters and colouration. Aetobatus narutobiei is particularly abundant in Ariake Bay in southern Japan where it is considered a pest species that predates heavily on farmed bivalve stocks and is culled annually as part of a 'predator control' program. The discovery of A. narutobiei highlights the paucity of detailed taxonomic research on this group of rays. This discovery impacts on current conservation assessments of A. flagellum and these need to be revised based on the findings of this study.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Animals
  • Classification
  • Ecology*
  • Fisheries*
  • Northwestern United States
  • Phylogeny
  • Skates, Fish / anatomy & histology
  • Skates, Fish / classification*
  • Skates, Fish / genetics
  • Species Specificity
  • Terminology as Topic*

Grants and funding

The senior author was supported by a National Science Foundation (NSF; http://www.nsf.gov) grant (Jaws and Backbone: Chondrichthyan Phylogeny and a Spine for the Vertebrate Tree of Life; DEB-01132229; www.nsf.gov) and the CSIRO’s Wealth from Oceans Flagship. The other authors (AY and KF) were supported by Grant-in-Aid for Scientific Research (C) 20580205, Grant-in-Aid for Scientific Research (B) 23380112 (www.jsps.go.jp). The funders had no role in study design, data collection and analysis, decision to publish or preparation of the manuscript.