White Syndrome in Acropora muricata: nonspecific bacterial infection and ciliate histophagy

Hdl Handle:
http://hdl.handle.net/10545/583312
Title:
White Syndrome in Acropora muricata: nonspecific bacterial infection and ciliate histophagy
Authors:
Sweet, Michael J. ( 0000-0003-4983-8333 ) ; Bythell, John C. ( 0000-0003-2416-9786 )
Abstract:
Selective antibiotic treatment of white syndrome (WS)-affected corals (Acropora muricata) from Fiji was used to identify 3 potential bacterial pathogens of the disease. Interestingly, the suite of bacterial associates of the disease was different to that recently identified using identical primer sets for WS on the GBR and in the Solomon Islands. In addition to the three bacterial pathogenic candidates and as previously shown for WS and more recently for white band disease (WBD) in the Caribbean, all samples of the disease were specifically associated with the histophagous ciliate Philaster lucinda. From the pattern of disease progression and histopathology in relation to the selective elimination of microbial groups, we conclude that these ‘white’ dis-eases are a result of a nonspecific bacterial infection and a ‘secondary’ infection by the P. lucinda ciliate. Although we have not observed the initiation of infection, a nonspecific, multispecies bacterial infection appears to be a corequirement for WS lesion progression and we hypothesize that the bacterial infection occurs initially, weakening the defences of the host to predation by the ciliates. Such ciliate histophagy gives rise to the characteristic white band of denuded coral skeleton that gives these diseases their names. The characteristics of the microbial communities of WBD and WS appear identical, and since the bacterial associates of WS vary geographically (and/or tempo-rally), there appears to be no logical distinction between WS in the Indo-Pacific and WBD in the Caribbean.
Affiliation:
University of Derby
Citation:
Sweet, M. and Bythell, J. (2015) 'White Syndrome in Acropora muricata: nonspecific bacterial infection and ciliate histophagy', Molecular Ecology, 24 (5):1150
Journal:
Molecular Ecology
Issue Date:
Mar-2015
URI:
http://hdl.handle.net/10545/583312
DOI:
10.1111/mec.13097
Additional Links:
http://doi.wiley.com/10.1111/mec.13097
Type:
Article
Language:
en
ISSN:
09621083
Appears in Collections:
Biological Sciences Research Group

Full metadata record

DC FieldValue Language
dc.contributor.authorSweet, Michael J.en
dc.contributor.authorBythell, John C.en
dc.date.accessioned2015-12-07T14:57:43Zen
dc.date.available2015-12-07T14:57:43Zen
dc.date.issued2015-03en
dc.identifier.citationSweet, M. and Bythell, J. (2015) 'White Syndrome in Acropora muricata: nonspecific bacterial infection and ciliate histophagy', Molecular Ecology, 24 (5):1150en
dc.identifier.issn09621083en
dc.identifier.doi10.1111/mec.13097en
dc.identifier.urihttp://hdl.handle.net/10545/583312en
dc.description.abstractSelective antibiotic treatment of white syndrome (WS)-affected corals (Acropora muricata) from Fiji was used to identify 3 potential bacterial pathogens of the disease. Interestingly, the suite of bacterial associates of the disease was different to that recently identified using identical primer sets for WS on the GBR and in the Solomon Islands. In addition to the three bacterial pathogenic candidates and as previously shown for WS and more recently for white band disease (WBD) in the Caribbean, all samples of the disease were specifically associated with the histophagous ciliate Philaster lucinda. From the pattern of disease progression and histopathology in relation to the selective elimination of microbial groups, we conclude that these ‘white’ dis-eases are a result of a nonspecific bacterial infection and a ‘secondary’ infection by the P. lucinda ciliate. Although we have not observed the initiation of infection, a nonspecific, multispecies bacterial infection appears to be a corequirement for WS lesion progression and we hypothesize that the bacterial infection occurs initially, weakening the defences of the host to predation by the ciliates. Such ciliate histophagy gives rise to the characteristic white band of denuded coral skeleton that gives these diseases their names. The characteristics of the microbial communities of WBD and WS appear identical, and since the bacterial associates of WS vary geographically (and/or tempo-rally), there appears to be no logical distinction between WS in the Indo-Pacific and WBD in the Caribbean.en
dc.language.isoenen
dc.relation.urlhttp://doi.wiley.com/10.1111/mec.13097en
dc.rightsArchived with thanks to Molecular Ecologyen
dc.subjectCoral reefen
dc.subjectDiseaseen
dc.titleWhite Syndrome in Acropora muricata: nonspecific bacterial infection and ciliate histophagyen
dc.typeArticleen
dc.contributor.departmentUniversity of Derbyen
dc.identifier.journalMolecular Ecologyen
dc.contributor.institutionMolecular Health and Disease Laboratory; College of Life and Natural Sciences; University of Derby; Kedleston Road Derby DE56 0TA UKen
dc.contributor.institutionUniversity of the South Pacific; Laucala Campus; Suva Fijien
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