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Unexpected mixed-mode transmission and moderate genetic regulation of Symbiodinium communities in a brooding coral

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dc.contributor Australian Inst Marine Sci
dc.contributor James Cook University
dc.contributor Coll Sci & Engn
dc.contributor Arc Ctr Excellence Coral Reef Studies
dc.contributor James Cook Univ
dc.contributor Australian Institute Of Marine Science
dc.contributor Aims Jcu WILLIS, BETTE L. BAY, LINE K. QUIGLEY, KATE M. WARNER, PATRICIA A. 2018-11-25T18:19:22Z 2018-11-25T18:19:22Z 2019-01-07T22:02:34Z 2018-11-25T18:19:22Z 2018-11-25T18:19:22Z 2019-01-07T22:02:34Z 2018-12-01
dc.identifier.citation Quigley KM, Warner PA, Bay LK, Willis BL (2018) Unexpected mixed-mode transmission and moderate genetic regulation of Symbiodinium communities in a brooding coral. Heredity121: 524-536
dc.identifier.issn 0018-067X
dc.description.abstract Determining the extent to which Symbiodinium communities in corals are inherited versus environmentally acquired is fundamental to understanding coral resilience and to predicting coral responses to stressors like warming oceans that disrupt this critical endosymbiosis. We examined the fidelity with which Symbiodinium communities in the brooding coral Seriatopora hystrix are vertically transmitted and the extent to which communities are genetically regulated, by genotyping the symbiont communities within 60 larvae and their parents (9 maternal and 45 paternal colonies) using high-throughput sequencing of the ITS2 locus. Unexpectedly, Symbiodinium communities associated with brooded larvae were distinct from those within parent colonies, including the presence of types not detected in adults. Bayesian heritability (h(2)) analysis revealed that 33% of variability in larval Symbiodinium communities was genetically controlled. Results highlight flexibility in the establishment of larval symbiont communities and demonstrate that symbiont transmission is not exclusively vertical in brooding corals. Instead, we show that Symbiodinium transmission in S. hystrix involves a mixed-mode strategy, similar to many terrestrial invertebrate symbioses. Also, variation in the abundances of common Symbiodinium types among adult corals suggests that microhabitat differences influence the structure of in hospite Symbiodinium communities. Partial genetic regulation coupled with flexibility in the environmentally acquired component of Symbiodinium communities implies that corals with vertical transmission, like S. hystrix, may be more resilient to environmental change than previously thought.
dc.language English
dc.subject Bacterial Communities
dc.subject Acropora Corals
dc.subject Porites-astreoides
dc.subject Ecology
dc.subject Reef Corals
dc.subject Evolutionary Biology
dc.subject Microbial Diversity
dc.subject Scleractinian Corals
dc.subject Vertical Transmission
dc.subject Species-diversity
dc.subject Environmental Sciences & Ecology
dc.subject Genetics & Heredity
dc.subject Biogeographical Patterns
dc.subject Genus Symbiodinium
dc.title Unexpected mixed-mode transmission and moderate genetic regulation of Symbiodinium communities in a brooding coral
dc.type journal article
dc.identifier.doi 10.1038/s41437-018-0059-0
dc.identifier.wos WOS:000449427300002

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