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Marine Biology

, 166:34 | Cite as

Implications of range overlap in the commercially important pan-tropical sea urchin genus Tripneustes (Echinoidea: Toxopneustidae)

  • Omri BronsteinEmail author
  • Andreas Kroh
  • Ashley D. Miskelly
  • Stephen D. A. Smith
  • Symon A. Dworjanyn
  • Benjamin Mos
  • Maria Byrne
Short note

Abstract

Sea urchins of the genus Tripneustes are among the most abundant and ecologically important pan-tropical marine invertebrates. Recognized as potent ecosystem engineers due to their intense grazing of macroalgae and sea grass and highly valued for their gonads, wild populations of Tripneustes are commercially exploited for fisheries and aquaculture. Recently, a new species, Tripneustes kermadecensis (Bronstein et al. 2017), was described from the southern Pacific Ocean, off the Kermadec Islands, near the tropical/sub-tropical transition zone. Here, we explore the range of Tripneustes and, in particular, T. kermadecensis by morphological and genetic tools to determine whether it also occurs in Australia. We report, for the first time, the presence of a second Tripneustes species, T. kermadecensis, from Australia. We show that T. kermadecensis is in fact highly abundant throughout most of sub-tropical eastern Australia, where it occurs in association with coral and temperate reefs and has been recognized for decades as the ‘lamington sea urchin’. As commercial exploitation and stock-release programs of Tripneustes are rapidly expanding, and as global warming causes tropicalization of eastern Australia, driving the southern expansion of its congener T. gratilla, we call for re-evaluation of the conservation vulnerability of T. kermadecensis along the Australian continent and action by the aquaculture industry to genetically confirm the species identity of stocks in their facilities.

Notes

Acknowledgements

Institutional support was provided by the Central Research Laboratories and the Department of Geology and Palaeontology at the Natural History Museum Vienna, Austria. We gratefully acknowledge Gustav Paulay (Florida Museum of Natural History), Francisco Solis-Marin (National Autonomous University of Mexico), and Baraka Kuguru (Tanzania Fisheries Research Institute) for assistance in obtaining the samples. Meirav Chen is acknowledged for graphical assistance. M. A. Sewell and an undisclosed reviewer are greatfully acknowledged for critically reading the manuscript and suggesting valuable comments. This work was supported by the Austrian Science Fund (FWF): project number P 29508-B25.

Funding

Funding was provided by the Austrian Science Fund (FWF): project number P 29508-B25.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All applicable international, national, and institutional guidelines for the use of animals were followed.

Supplementary material

227_2019_3478_MOESM1_ESM.pdf (738 kb)
Supplementary material 1 (PDF 737 kb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Natural History Museum ViennaViennaAustria
  2. 2.The Steinhardt Museum of Natural HistoryTel Aviv UniversityTel AvivIsrael
  3. 3.The Sea Urchin Science Centre and GallerySydneyAustralia
  4. 4.National Marine Science CentreSouthern Cross UniversityLismoreAustralia
  5. 5.Marine Ecology Research Centre, School of Environment, Science and EngineeringSouthern Cross UniversityLismoreAustralia
  6. 6.School of Medical SciencesUniversity of SydneyLismoreAustralia

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