Coral Bacterial-Core Abundance and Network Complexity as Proxies for Anthropogenic Pollution

Frontiers in Microbiology
Deborah C A LeiteRaquel S Peixoto

Abstract

Acclimatization via changes in the stable (core) or the variable microbial diversity and/or abundance is an important element in the adaptation of coral species to environmental changes. Here, we explored the spatial-temporal dynamics, diversity and interactions of variable and core bacterial populations associated with the coral Mussismilia hispida and the surrounding water. This survey was performed on five reefs along a transect from the coast (Reef 1) to offshore (Reef 5), representing a gradient of influence of the river mouth, for almost 12 months (4 sampling times), in the dry and rainy seasons. A clear increasing gradient of organic-pollution proxies (nitrogen content and fecal coliforms) was observed from Reef 1 to Reef 5, during both seasons, and was highest at the Buranhém River mouth (Reef 1). Conversely, a clear inverse gradient of the network analysis of the whole bacterial communities also revealed more-complex network relationships at Reef 5. Our data also indicated a higher relative abundance of members of the bacterial core, dominated by Acinetobacter sp., at Reef 5, and higher diversity of site-stable bacterial populations, likely related to the higher abundance of total coliforms and N content (proxies of se...Continue Reading

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Citations

Jul 1, 2020·Frontiers in Microbiology·Mark McCauleyTamar L Goulet
Sep 3, 2019·Frontiers in Microbiology·Hannah E EpsteinMadeleine J H van Oppen
Apr 23, 2020·Microbiome·Isis GuibertVéronique Berteaux-Lecellier
May 22, 2019·Ecology and Evolution·Denise P SilvaRaquel S Peixoto
Jan 13, 2021·The Science of the Total Environment·Yanying ZhangJunde Dong
Dec 16, 2020·Annual Review of Animal Biosciences·Raquel S PeixotoDavid G Bourne
Feb 4, 2021·Scientific Reports·Caren L S VilelaRaquel S Peixoto

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