Day–night ecophysiology of the photosymbiotic bioeroding sponge Cliona orientalis Thiele, 1900

Fang, James K.H., Schonberg, Christine H.L., Hoegh-Guldberg, Ove and Dove, Sophie (2016) Day–night ecophysiology of the photosymbiotic bioeroding sponge Cliona orientalis Thiele, 1900. Marine Biology, 163 5: 100.1-100.12. doi:10.1007/s00227-016-2848-4


Author Fang, James K.H.
Schonberg, Christine H.L.
Hoegh-Guldberg, Ove
Dove, Sophie
Title Day–night ecophysiology of the photosymbiotic bioeroding sponge Cliona orientalis Thiele, 1900
Formatted title
Day–night ecophysiology of the photosymbiotic bioeroding sponge Cliona orientalis Thiele, 1900
Journal name Marine Biology   Check publisher's open access policy
ISSN 0025-3162
1432-1793
Publication date 2016-04-11
Year available 2016
Sub-type Article (original research)
DOI 10.1007/s00227-016-2848-4
Open Access Status Not Open Access
Volume 163
Issue 5
Start page 100.1
End page 100.12
Total pages 12
Place of publication Heidelberg, Germany
Publisher Springer Verlag
Collection year 2017
Language eng
Formatted abstract
Marine bioerosion is projected to increase under future environmental conditions, and interest in investigating the ecological roles of bioeroding sponges has grown substantially over recent years. Cliona orientalis Thiele, 1900 is an important bioeroding sponge on Indo-Pacific coral reefs that belongs to the Cliona viridis species complex, which is a group of Clionaidae that are symbiotic with dinoflagellates of the genus Symbiodinium. The present study aimed to investigate the intracellular Symbiodinium and the holosymbiont of C. orientalis under a day–night cycle. Measurements of chlorophyll fluorescence confirmed significant day–night relocation of Symbiodinium by C. orientalis, in which Symbiodinium mostly resided at the surface during the day to enhance light availability. Under the light regime within C. orientalis, Symbiodinium displayed efficient photosynthesis as indicated by its oxygen production rate. At night, Symbiodinium was drawn deeper into the sponge. As a holosymbiont, C. orientalis did not significantly change net uptake of heterotrophic carbon between day and night. During the day, the host presumably received autotrophic carbon translocated from Symbiodinium and displayed faster bioerosion measured as dissolution of calcium carbonate. The present findings advance our understanding of how diurnal rhythms may influence energy acquisition strategies and ecological performance of a sponge–photosymbiont association.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Global Change Institute Publications
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