Abstract
Ceraesignum maximum (G.B. Sowerby I, 1825), formerly Dendropoma maximum, was subject to a sudden, massive die-off in the Society Islands, French Polynesia, in 2015. On Mo’orea, where we have detailed documentation of the die-off, these gastropods were previously found in densities up to 165 m−2. In July 2015, we surveyed shallow back reefs of Mo’orea before, during and after the die-off, documenting their swift decline. All censused populations incurred 100% mortality. Additional surveys and observations from Mo’orea, Tahiti, Bora Bora, and Huahine (but not Taha’a) suggested a similar, and approximately simultaneous, die-off. The cause(s) of this cataclysmic mass mortality are currently unknown. Given the previously documented negative effects of C. maximum on corals, we expect the die-off will have cascading effects on the reef community.
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Acknowledgments
We thank Amy Briggs, Jacques YouSing, Keith Seydel, Stella Swanson, and Morgan Farrell for their field assistance, and Halard Lescinksky, Nicole Boriski, and Leslie Bissey for sharing their photographs from Mo’orea, Huahine, Bora Bora, and Taha’a. This work was supported by NSF grant OCE-1130359 and is a contribution from UC Berkeley’s Richard B. Gump South Pacific Research Station.
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Communicated by Biology Editor Dr. Line K. Bay
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Brown, A.L., Frazer, T.K., Shima, J.S. et al. Mass mortality of the vermetid gastropod Ceraesignum maximum . Coral Reefs 35, 1027–1032 (2016). https://doi.org/10.1007/s00338-016-1438-8
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DOI: https://doi.org/10.1007/s00338-016-1438-8