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Highly infectious symbiont dominates initial uptake in coral juveniles

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dc.contributor Australian Institute Of Marine Science
dc.contributor Sch Marine & Trop Biol
dc.contributor James Cook Univ
dc.contributor James Cook University
dc.contributor Aims Jcu
dc.contributor Australian Inst Marine Sci
dc.contributor Arc Ctr Excellence Coral Reef Studies
dc.contributor Australian Institute Of Marine Science (aims) en WILLIS, BETTE L. ABREGO, DAVID VAN OPPEN, MADELEINE J. H. 2013-02-28T06:43:45Z 2013-02-28T06:43:45Z 2017-03-21T00:49:06Z 2019-07-08T02:20:53Z 2013-02-28T06:43:45Z 2017-03-21T00:49:06Z 2017-03-21T00:49:06Z 2019-07-08T02:20:53Z 2009-08-01
dc.identifier 8160 en
dc.identifier.citation Abrego D, van Oppen MJH and Willis BL (2009) Highly infectious symbiont dominates initial uptake in coral juveniles. Molecular Ecology. 18: 3518-3531. en
dc.identifier.issn 0962-1083
dc.description Link to abstract/full text - en
dc.description.abstract The majority of reef-building corals acquire their obligate algal symbionts (Symbiodinium) from the environment. However, factors shaping the initial establishment of coral-algal symbioses, including parental effects, local environmental conditions and local availability of symbionts, are not well understood. This study monitored the uptake and maintenance of Symbiodinium in juveniles of two common corals, Acropora tenuis and Acropora millepora, that were reciprocally explanted between sites where adult colonies host different types of Symbiodinium. We found that coral juveniles were rapidly dominated by type D Symbiodinium, even though this type is not found in adult colonies (including the parental colonies) in four out of the five study populations. Furthermore, type D Symbiodinium was found in less than one-third of a wide range of coral species (n > 50) sampled at the two main study sites, suggesting that its dominance in the acroporid juveniles is not because it is the most abundant local endosymbiotic type. Moreover, dominance by type D was observed irrespective of the light intensity to which juveniles were exposed in a field study. In summary, despite its relatively low abundance in coral assemblages at the study sites and irrespective of the surrounding light environment, type D Symbiodinium is the main symbiont type initially acquired by juveniles of A. millepora and A. tenuis. We conclude that during early ontogeny in these corals, there are few barriers to the uptake of Symbiodinium types which differ from those found in parental colonies, resulting in dominance by a highly infectious and potentially opportunistic symbiont.
dc.description.sponsorship We thank Tony Ailing for providing data on the relative abundance of scleractinian hosts at Magnetic Island. Three anonymous reviewers provided valuable comments which improved this manuscript. Zoe Richards and Katharina Fabricius were very helpful in identification of some of the cnidarian hosts. Rob Gegg helped to get hundreds of settlement tiles and racks ready for this research. Lesa Peplow provided valuable advice on the initial laboratory processing of samples. We also thank Claudia McGrath, the staff at MARFU and Orpheus Island Research Station, and many volunteers for their help during coral spawning field work. This work was supported by the Australian Research Council, James Cook University and the Australian Institute of Marine Science. D. A. received financial support from CONACYT ( Mexico) and Brockmann / State of Jalisco Scholarship Foundation.
dc.description.uri en
dc.language English
dc.language en en
dc.relation.ispartof Molecular Ecology - pages: 18: 3518-3531 en
dc.relation.ispartof Null
dc.subject Great-barrier-reef
dc.subject Ecology
dc.subject Specificity
dc.subject Montastraea-annularis
dc.subject Free-living Symbiodinium
dc.subject Diversity
dc.subject Evolutionary Biology
dc.subject Bleaching Event
dc.subject Zooxanthellae
dc.subject Environmental Sciences & Ecology
dc.subject Symbiodinium Uptake
dc.subject Fungia-scutaria
dc.subject Algal Symbiosis
dc.subject Environmental Effects
dc.subject Biochemistry & Molecular Biology
dc.subject Coral Juveniles
dc.subject Genus Symbiodinium
dc.title Highly infectious symbiont dominates initial uptake in coral juveniles
dc.type journal article en
dc.identifier.doi 10.1111/j.1365-294X.2009.04275.x
dc.identifier.wos WOS:000268760100016

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