Affiliation:
1. Department of Biology, University of Puerto Rico, Mayagüez Campus, P.O. Box 9000, Mayagüez 00681-9000, Puerto Rico
2. Department of Microbiology, University of Puerto Rico School of Medicine, Guillermo Arbona Main Building, San Juan 00936-5067, Puerto Rico
Abstract
Caribbean sea urchins are marine invertebrates that have experienced a decline over the years. Studies on sea urchins have focused primarily on the microbiome of the coelomic fluid or the gut microbiota. In this study, the epibiota community associated with four wild Caribbean sea urchin species, Lytechinus variegatus, Echinometra lucunter, Tripneustes ventricosus, and Diadema antillarum, was characterized for the first time. Using 57 sea urchin animal samples, we evaluated the influence of animal species, trophic niches, and geographical location on the composition of the epibiotic microbiota. We found significant differences in the bacterial biota among species and trophic niches, but not among geographical locations. L. variegatus exhibited the highest alpha diversity with high dominance of Fusobacteria, Planctomycetes, and Cyanobacteria, whereas T. ventricosus and D. antillarum were dominated by Firmicutes. T. ventricosus inhabiting the seagrass biotope dominated by Thalassia testudinum meadows had mostly Endozoicomonas. In contrast, samples located in the reef (dominated by corals and other reef builders) had a higher abundance of Kistimonas and Photobacterium. Our findings confirm that the epibiotic microbiota is species-specific, but also niche-dependent, revealing the trophic networks emerging from the organic matter being recycled in the seagrass and reef niches. As echinoids are important grazers of benthic communities, their microbiota will likely influence ecosystem processes.
Funder
Center for Collaborative Research in Minority Health and Health Disparities
Institutional Development Award (IDeA) from the National Institute of General Medical Sciences of the National Institutes of Health
Subject
Virology,Microbiology (medical),Microbiology
Reference89 articles.
1. Godoy-Vitorino, F., and Toledo-Hernandez, C. (2018). Marine Organisms as Model Systems in Biology and Medicine, Springer.
2. Hakim, J.A., Schram, J.B., Galloway, A.W., Morrow, C.D., Crowley, M.R., Watts, S.A., and Bej, A.K. (2019). The purple sea urchin Strongylocentrotus purpuratus demonstrates a compartmentalization of gut bacterial microbiota, predictive functional attributes, and taxonomic co-occurrence. Microorganisms, 7.
3. A high-resolution map of the gut microbiota in Atlantic salmon (Salmo salar): A basis for comparative gut microbial research;Gajardo;Sci. Rep.,2016
4. Trophic niches reflect compositional differences in microbiota among Caribbean sea urchins;PeerJ,2021
5. Comparative analyses of foregut and hindgut bacterial communities in hoatzins and cows;Goldfarb;ISME J.,2012
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