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Comparison of the effects of thermal stress and CO₂-driven acidified seawater on fertilization in coral Acropora digitifera.
Zygote. 2015 Aug; 23(4):631-4.Z

Abstract

Global warming (GW) and ocean acidification (OA) have been recognized as severe threats for reef-building corals that support coral reef ecosystems, but these effects on the early life history stage of corals are relatively unknown compared with the effects on calcification of adult corals. In this study, we evaluated the effects of thermal stress and CO2-driven acidified seawater on fertilization in a reef-building coral, Acropora digitifera. The fertilization rates of A. digitifera decreased in response to thermal stress compared with those under normal seawater conditions. In contrast, the changes of fertilization rates were not evident in the acidified seawater. Generalized Linear Mixed Model (GLMM) predicted that sperm/egg crosses and temperature were explanatory variables in the best-fitted model for the fertilization data. In the best model, interactions between thermal stress and acidified seawater on the fertilization rates were not selected. Our results suggested that coral fertilization is more sensitive to future GW than OA. Taking into consideration the previous finding that sperm motility of A. digitifera was decreased by acidified seawater, the decrease in coral cover followed by that of sperm concentration might cause the interacting effects of GW and OA on coral fertilization.

Authors+Show Affiliations

Okinawa National College of Technology,905 Henoko,Nago-City,Okinawa 905-2192,Japan.Geological Survey of Japan,National Institute of Advanced Industrial Science and Technology (AIST),Tsukuba 305-8567,Japan.Sesoko Station,Tropical Biosphere Research Center,University of the Ryukyus,Okinawa 905-0227,Japan.Center for Global Environmental Research,National Institute for Environmental Studies,Tsukuba,Japan.

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24847859

Citation

Iguchi, Akira, et al. "Comparison of the Effects of Thermal Stress and CO₂-driven Acidified Seawater On Fertilization in Coral Acropora Digitifera." Zygote (Cambridge, England), vol. 23, no. 4, 2015, pp. 631-4.
Iguchi A, Suzuki A, Sakai K, et al. Comparison of the effects of thermal stress and CO₂-driven acidified seawater on fertilization in coral Acropora digitifera. Zygote. 2015;23(4):631-4.
Iguchi, A., Suzuki, A., Sakai, K., & Nojiri, Y. (2015). Comparison of the effects of thermal stress and CO₂-driven acidified seawater on fertilization in coral Acropora digitifera. Zygote (Cambridge, England), 23(4), 631-4. https://doi.org/10.1017/S0967199414000185
Iguchi A, et al. Comparison of the Effects of Thermal Stress and CO₂-driven Acidified Seawater On Fertilization in Coral Acropora Digitifera. Zygote. 2015;23(4):631-4. PubMed PMID: 24847859.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison of the effects of thermal stress and CO₂-driven acidified seawater on fertilization in coral Acropora digitifera. AU - Iguchi,Akira, AU - Suzuki,Atsushi, AU - Sakai,Kazuhiko, AU - Nojiri,Yukihiro, Y1 - 2014/05/22/ PY - 2014/5/23/entrez PY - 2014/5/23/pubmed PY - 2016/4/21/medline KW - Coral KW - Fertilization KW - Global warming KW - Interaction KW - Ocean acidification SP - 631 EP - 4 JF - Zygote (Cambridge, England) JO - Zygote VL - 23 IS - 4 N2 - Global warming (GW) and ocean acidification (OA) have been recognized as severe threats for reef-building corals that support coral reef ecosystems, but these effects on the early life history stage of corals are relatively unknown compared with the effects on calcification of adult corals. In this study, we evaluated the effects of thermal stress and CO2-driven acidified seawater on fertilization in a reef-building coral, Acropora digitifera. The fertilization rates of A. digitifera decreased in response to thermal stress compared with those under normal seawater conditions. In contrast, the changes of fertilization rates were not evident in the acidified seawater. Generalized Linear Mixed Model (GLMM) predicted that sperm/egg crosses and temperature were explanatory variables in the best-fitted model for the fertilization data. In the best model, interactions between thermal stress and acidified seawater on the fertilization rates were not selected. Our results suggested that coral fertilization is more sensitive to future GW than OA. Taking into consideration the previous finding that sperm motility of A. digitifera was decreased by acidified seawater, the decrease in coral cover followed by that of sperm concentration might cause the interacting effects of GW and OA on coral fertilization. SN - 1469-8730 UR - https://www.unboundmedicine.com/medline/citation/24847859/Comparison_of_the_effects_of_thermal_stress_and_CO₂_driven_acidified_seawater_on_fertilization_in_coral_Acropora_digitifera_ L2 - https://www.cambridge.org/core/product/identifier/S0967199414000185/type/journal_article DB - PRIME DP - Unbound Medicine ER -