Journal
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
Volume 285, Issue 1881, Pages -Publisher
ROYAL SOC
DOI: 10.1098/rspb.2018.0340
Keywords
Lytechinus variegatus; climate change; PICRUSt; microbial ecology; 16S rRNA; next-generation sequencing
Categories
Funding
- Microbiome Resource at the University of Alabama at Birmingham: Comprehensive Cancer Center [P30AR050948]
- Center for AIDS Research [5P30AI027767]
- Center for Clinical Translational Science [UL1TR001417]
- University Wide Institutional Core
- Heflin Centre for Genomic Sciences
- Endowed University Professorship in Polar and Marine Biology
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The microbiome of sea urchins plays a role in maintaining digestive health and innate immunity. Here, we investigated the effects of long-term (90 day) exposure to elevated seawater temperatures on the microbiome of the common, subtropical sea urchin Lytechinus variegatus. The community composition and diversity of microbes varied according to the type of sample collected from the sea urchin (seawater, feed, intestines, coelomic fluid, digested pellet and faeces), with the lowest microbial diversity (predominately the order Campylobacterales) located in the intestinal tissue. Sea urchins exposed to near-future seawater temperatures maintained the community structure and diversity of microbes associated with their tissues. However, marginal, non-significant shifts in microbial community structure with elevated temperature resulted in significant changes in predicted metagenomic functions such as membrane transport and amino acid and carbohydrate metabolism. The predicted changes in key metabolic categories suggest that near-future climate-induced increases in seawater temperature could shift microbial community function and impact sea urchin digestive and immune physiology.
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