Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/79454
Title: Chemical mediation of coral larval settlement by crustose coralline algae
Authors: Tebben, J.
Motti, C. A
Siboni, Nachshon
Negri, A. P.
Harder, T.
Steinberg, Peter David
Hatta, Masayuki
Tapiolas, D. M.
Schupp, P. J.
Kitamura, Makoto
Keywords: DRNTU::Science::Biological sciences
Issue Date: 2015
Source: Tebben, J., Motti, C. A., Siboni, N., Tapiolas, D. M., Negri, A. P., Schupp, P. J., et al. (2015). Chemical mediation of coral larval settlement by crustose coralline algae. Scientific Reports, 5, 10803-.
Series/Report no.: Scientific Reports
Abstract: The majority of marine invertebrates produce dispersive larvae which, in order to complete their life cycles, must attach and metamorphose into benthic forms. This process, collectively referred to as settlement, is often guided by habitat-specific cues. While the sources of such cues are well known, the links between their biological activity, chemical identity, presence and quantification in situ are largely missing. Previous work on coral larval settlement in vitro has shown widespread induction by crustose coralline algae (CCA) and in particular their associated bacteria. However, we found that bacterial biofilms on CCA did not initiate ecologically realistic settlement responses in larvae of 11 hard coral species from Australia, Guam, Singapore and Japan. We instead found that algal chemical cues induce identical behavioral responses of larvae as per live CCA. We identified two classes of CCA cell wall-associated compounds – glycoglycerolipids and polysaccharides – as the main constituents of settlement inducing fractions. These algae-derived fractions induce settlement and metamorphosis at equivalent concentrations as present in CCA, both in small scale laboratory assays and under flow-through conditions, suggesting their ability to act in an ecologically relevant fashion to steer larval settlement of corals. Both compound classes were readily detected in natural samples.
URI: https://hdl.handle.net/10356/79454
http://hdl.handle.net/10220/26061
ISSN: 2045-2322
DOI: http://dx.doi.org/10.1038/srep10803
Rights: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:NEWRI Journal Articles

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