The larval sponge holobiont exhibits high thermal tolerance

Webster, Nicole S., Botte, Emmanuelle S. , Soo, Rochelle and Whalan, Steve (2011) The larval sponge holobiont exhibits high thermal tolerance. Environmental Microbiology Reports, 3 6: 756-762. doi:10.1111/j.1758-2229.2011.00296.x


Author Webster, Nicole S.
Botte, Emmanuelle S.
Soo, Rochelle
Whalan, Steve
Title The larval sponge holobiont exhibits high thermal tolerance
Journal name Environmental Microbiology Reports   Check publisher's open access policy
ISSN 1758-2229
Publication date 2011-12-01
Sub-type Article (original research)
DOI 10.1111/j.1758-2229.2011.00296.x
Open Access Status Not yet assessed
Volume 3
Issue 6
Start page 756
End page 762
Total pages 7
Place of publication Chichester, West Sussex, United Kingdom
Publisher Wiley-Blackwell Publishing
Language eng
Abstract Marine sponges are critical components of benthic environments; however, their sessile habit, requirement to filter large volumes of water and complex symbiotic partnerships make them particularly vulnerable to the effects of global climate change. We assessed the effect of elevated seawater temperature on bacterial communities in larvae of the Great Barrier Reef sponge, Rhopaloeides odorabile. In contrast to the strict thermal threshold of 32°C previously identified in adult R. odorabile, larvae exhibit a markedly higher thermal tolerance, with no adverse health effects detected at temperatures below 36°C. Similarly, larval microbial communities were conserved at temperatures up to 34°C with a highly significant shift occurring after 24 h at 36°C. This shift involved the loss of previously described symbionts (in particular the Nitrospira, Chloroflexi and a Roseobacter lineage) and the appearance of new Gammaproteobacteria not detected at lower temperatures. Here, we demonstrated that sponge larvae maintain highly stable symbioses at seawater temperatures exceeding those that are predicted under current climate change scenarios. In addition, by revealing that the shift in microbial composition occurs in conjunction with necrosis and mortality of larvae at 36°C we have provided additional evidence of the strong link between host health and the stability of symbiont communities.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemistry and Molecular Biosciences
 
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Created: Tue, 12 Sep 2017, 16:47:33 EST by Rochelle Soo on behalf of School of Chemistry & Molecular Biosciences