Local Variability in Microbiome Composition and Growth Suggests Habitat Preferences for Two Reef-Building Cold-Water Coral Species

Cold-water coral (CWC) ecosystems provide niches and nurseries for many deep-sea species. Lophelia pertusa and Madrepora oculata, two cosmopolitan species forming three dimensional structures, are found in cold waters under specific hydrological regimes that provide food and reoxygenation. There is...

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Main Authors: Leila Chapron, Franck Lartaud, Nadine Le Bris, Erwan Peru, Pierre E. Galand
Format: Article
Language:English
Published: Frontiers Media S.A. 2020-02-01
Series:Frontiers in Microbiology
Subjects:
Online Access:https://www.frontiersin.org/article/10.3389/fmicb.2020.00275/full
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author Leila Chapron
Franck Lartaud
Nadine Le Bris
Erwan Peru
Pierre E. Galand
author_facet Leila Chapron
Franck Lartaud
Nadine Le Bris
Erwan Peru
Pierre E. Galand
author_sort Leila Chapron
collection DOAJ
description Cold-water coral (CWC) ecosystems provide niches and nurseries for many deep-sea species. Lophelia pertusa and Madrepora oculata, two cosmopolitan species forming three dimensional structures, are found in cold waters under specific hydrological regimes that provide food and reoxygenation. There is now more information about their feeding, their growth and their associated microbiome, however, little is known about the influence of their habitat on their physiology, or on the composition of their bacterial community. The goal of this study was to test if the habitat of L. pertusa and M. oculata influenced the hosts associated bacterial communities, the corals’ survival and their skeletal growth along the slope of a submarine canyon. A transplant experiment was used, based on sampling and cross-redeployment of coral fragments at two contrasted sites, one deeper and one shallower. Our results show that M. oculata had significantly higher skeletal growth rates in the shallower site and that it had a specific microbiome that did not change between sites. Inversely, L. pertusa had the same growth rates at both sites, but its bacterial community compositions differed between locations. Additionally, transplanted L. pertusa acquired the microbial signature of the local corals. Thus, our results suggest that M. oculata prefer the shallower habitat.
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spelling doaj.art-6f96fc9d10c049c6aecc4c838781dc342022-12-21T18:40:31ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2020-02-011110.3389/fmicb.2020.00275505412Local Variability in Microbiome Composition and Growth Suggests Habitat Preferences for Two Reef-Building Cold-Water Coral SpeciesLeila ChapronFranck LartaudNadine Le BrisErwan PeruPierre E. GalandCold-water coral (CWC) ecosystems provide niches and nurseries for many deep-sea species. Lophelia pertusa and Madrepora oculata, two cosmopolitan species forming three dimensional structures, are found in cold waters under specific hydrological regimes that provide food and reoxygenation. There is now more information about their feeding, their growth and their associated microbiome, however, little is known about the influence of their habitat on their physiology, or on the composition of their bacterial community. The goal of this study was to test if the habitat of L. pertusa and M. oculata influenced the hosts associated bacterial communities, the corals’ survival and their skeletal growth along the slope of a submarine canyon. A transplant experiment was used, based on sampling and cross-redeployment of coral fragments at two contrasted sites, one deeper and one shallower. Our results show that M. oculata had significantly higher skeletal growth rates in the shallower site and that it had a specific microbiome that did not change between sites. Inversely, L. pertusa had the same growth rates at both sites, but its bacterial community compositions differed between locations. Additionally, transplanted L. pertusa acquired the microbial signature of the local corals. Thus, our results suggest that M. oculata prefer the shallower habitat.https://www.frontiersin.org/article/10.3389/fmicb.2020.00275/fullLophelia pertusaMadrepora oculataDNAbacteriaskeletal growth ratesMediterranean canyon
spellingShingle Leila Chapron
Franck Lartaud
Nadine Le Bris
Erwan Peru
Pierre E. Galand
Local Variability in Microbiome Composition and Growth Suggests Habitat Preferences for Two Reef-Building Cold-Water Coral Species
Frontiers in Microbiology
Lophelia pertusa
Madrepora oculata
DNA
bacteria
skeletal growth rates
Mediterranean canyon
title Local Variability in Microbiome Composition and Growth Suggests Habitat Preferences for Two Reef-Building Cold-Water Coral Species
title_full Local Variability in Microbiome Composition and Growth Suggests Habitat Preferences for Two Reef-Building Cold-Water Coral Species
title_fullStr Local Variability in Microbiome Composition and Growth Suggests Habitat Preferences for Two Reef-Building Cold-Water Coral Species
title_full_unstemmed Local Variability in Microbiome Composition and Growth Suggests Habitat Preferences for Two Reef-Building Cold-Water Coral Species
title_short Local Variability in Microbiome Composition and Growth Suggests Habitat Preferences for Two Reef-Building Cold-Water Coral Species
title_sort local variability in microbiome composition and growth suggests habitat preferences for two reef building cold water coral species
topic Lophelia pertusa
Madrepora oculata
DNA
bacteria
skeletal growth rates
Mediterranean canyon
url https://www.frontiersin.org/article/10.3389/fmicb.2020.00275/full
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