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Effect of elevated temperature on fecundity and reproductive timing in the coral Acropora digitifera

  • Camille W. Paxton (a1), Maria Vanessa B. Baria (a2), Virginia M. Weis (a3) and Saki Harii (a2)

Summary

The synchrony of spawning is of paramount importance to successful coral reproduction. The precise timing of spawning is thought to be controlled by a set of interacting environmental factors, including regional wind field patterns, timing of the sunset, and sea surface temperatures (SST). Climate change is resulting in increased SST, which is causing physiological stress in corals and could also be altering spawning synchrony and timing. In this study, we examined the effect of increasing seawater temperature by 2°C for 1 month prior to the predicted spawning time on reproduction in the coral Acropora digitifera. This short period of elevated temperature caused spawning to advance by 1 day. In animals incubated at elevated temperature, egg number per egg bundle did not change, however, egg volume significantly decreased as did sperm number. Our results indicate that temperature is acting both as a proximate cue to accelerate timing and as a stressor on gametogenesis to reduce fecundity. This finding suggests that increasing SSTs could play a dramatic role in altering reproductive timing and the success of corals in an era of climate change.

Copyright

Corresponding author

All correspondence to: Camille Paxton. Tropical Biosphere Research Center Sesoko Research Facility, University of the Ryukyus, Okinawa Prefecture Motobu Sesoko 3422 905–0227, Japan. Tel: 828 319 7103. E-mail: paxtonca@gmail.com

References

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Abdo, D.A., Bellchambers, L.M. & Evans, S.N. (2012). Turning up the heat: increasing temperature and coral bleaching at the high latitude coral reefs of the Houtman Abrolhos Islands. PLoS One 7, e43878.
Brady, A.K., Hilton, J.D. & Vize, P.D. (2009). Coral spawn timing is a direct response to solar light cycles and is not an entrained circadian response. Coral Reefs 28, 677–80.
Crowder, C.M., Liang, W.L., Weis, V.M. & Fan, T.Y. (2014). Elevated temperature alters the lunar timing of planulation in the brooding coral Pocillopora damicornis . PLoS One 9, e107906.
Donner, S.D. (2009). Coping with commitment: projected thermal stress on coral reefs under different future scenarios. PLoS One 4, e5712.
Gorbunov, M.Y. & Falkowski, P.G. (2002). Photoreceptors in the cnidarian hosts allow symbiotic corals to sense blue moonlight. Limnol. Oceanogr. 47, 309–15.
Harrison, P.L. (2011). Sexual reproduction of scleractinian corals. In Coral Reefs: An Ecosystem in Transition (eds Dubinsky, Z. & Stambler, N.), pp. 5985. New York: Springer.
Harrison, P.L., Babcock, R.C., Bull, G.D., Oliver, J.K., Wallace, C.C. & Willis, B.L. (1984). Mass spawning in tropical reef corals. Science 223, 1186–9.
Hayashibara, T., Shimoike, K., Kimura, T., Hosaka, S., Heyward, A., Harrison, P., Kudo, K. & Omori, M. (1993). Patterns of coral spawning at Akajima Island, Okinawa, Japan. Mar. Ecol. Prog. Ser. 101, 253–62.
Heyward, A.J. & Babcock, R.C. (1986). Self- and cross-fertilization in scleractinian corals. Mar. Biol. 90, 191–5.
Hoegh-Guldberg, O., Mumby, P., Hooten, A., Steneck, R., Greenfield, P., Gomez, E., Harvell, C.D., Sale, P.F., Edwards, A.J., Caldeira, K., Knowlton, N., Eakin, C.M., Iglesias-Prieto, R., Muthiga, N., Bradbury, R.H., Dubi, A. & Hatziolos, M.E. (2007). Coral reefs under rapid climate change and ocean acidification. Science 318, 1737–42.
Hunter, C. (1988). Environmental cues controlling spawning in two Hawaiian corals, Montipora verrucosa and M. dilatata. In Proceedings of the 6th International Coral Reef Symposium Townsville, Australia (eds Choat, J.H. & Barnes, D.), 2, 727–32.
Kojis, B. (1986). Sexual reproduction in Acropora (Isopora) (Coelenterata: Scleractinia). Mar. Biol. 91, 311–8.
Nozawa, Y. (2012). Annual variation in the timing of coral spawning in a high-latitude environment: influence of temperature. Biol. Bull. 222, 192202.
Oliver, J., Babcock, R., Harrison, P. & Willis, B. (1988). Geographic extent of mass coral spawning: clues to ultimate causal factors. In Proceedings of the 6th International Coral Reef Symposium Townsville, Australia (eds Choat, J.H. & Barnes, D.), 2, 803–10.
Tarrant, A.M., Reitzel, A.M., Blomquist, C.H., Haller, F., Tokarz, J. & Adamski, J. (2009). Steroid metabolism in cnidarians: insights from Nematostella vectensis . Mol. Cell. Endocrinol. 301, 2736.
Twan, W-H., Hwang, J-S., Lee, Y-H., Wu, H-F., Tung, Y-H. & Chang, C-F. (2006). Hormones and reproduction in scleractinian corals. Comp. Biochem. Phys. A 144, 247–53.
Van Moorsel, G. (1983). Reproductive strategies in two closely related stony corals (Agaricia, Scleractinia). Mar. Ecol. Prog. Ser. 13, 273–83.
van Woesik, R. (2010). Calm before the spawn: global coral spawning patterns are explained by regional wind fields. Proc. Roy. Soc. Lond. B Bio. 277, 715–22.
van Woesik, R., Lacharmoise, F. & Köksal, S. (2006). Annual cycles of solar insolation predict spawning times of Caribbean corals. Ecol. Lett. 9, 390–8.
Vargas-Ángel, B., Colley, S., Hoke, S.M. & Thomas, J. (2006). The reproductive seasonality and gametogenic cycle of Acropora cervicornis off Broward County, Florida, USA. Coral Reefs 25, 110–22.
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Zygote
  • ISSN: 0967-1994
  • EISSN: 1469-8730
  • URL: /core/journals/zygote
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