Chemical mediation of coral larval settlement by crustose coralline algae

Tebben, J; Motti, CA; Siboni, N; Tapiolas, DM; Negri, AP; Schupp, PJ; Kitamura, M; Hatta, M; Steinberg, PD; Harder, T

Chemical mediation of coral larval settlement by crustose coralline algae

Tebben, J Motti, CA Siboni, N

Tapiolas, DM Negri, AP Schupp, PJ Kitamura, M Hatta, M Steinberg, PD Harder, T

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Publication Type:: Journal Article
Citation:: Scientific Reports, 2015, 5
Issue Date:: 2015-06-04

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Field	Value	Language
dc.contributor.author	Tebben, J	en_US
dc.contributor.author	Motti, CA	en_US
dc.contributor.author	Siboni, N https://orcid.org/0000-0001-6082-0949	en_US
dc.contributor.author	Tapiolas, DM	en_US
dc.contributor.author	Negri, AP	en_US
dc.contributor.author	Schupp, PJ	en_US
dc.contributor.author	Kitamura, M	en_US
dc.contributor.author	Hatta, M	en_US
dc.contributor.author	Steinberg, PD	en_US
dc.contributor.author	Harder, T	en_US
dc.date.available	2015-04-29	en_US
dc.date.issued	2015-06-04	en_US
dc.identifier.citation	Scientific Reports, 2015, 5	en_US
dc.identifier.uri	http://hdl.handle.net/10453/40682
dc.description.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.	en_US
dc.relation.ispartof	Scientific Reports	en_US
dc.relation.isbasedon	10.1038/srep10803	en_US
dc.subject.mesh	Animals	en_US
dc.subject.mesh	Anthozoa	en_US
dc.subject.mesh	Bacteria	en_US
dc.subject.mesh	Cues	en_US
dc.subject.mesh	Larva	en_US
dc.title	Chemical mediation of coral larval settlement by crustose coralline algae	en_US
dc.type	Journal Article
utslib.citation.volume	5	en_US
utslib.for	0602 Ecology	en_US
utslib.for	0605 Microbiology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - C3 - Climate Change Cluster
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US
pubs.volume	5	en_US

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.

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http://hdl.handle.net/10453/40682