Prevalent endosymbiont zonation shapes the depth distributions of scleractinian coral species

Bathymetric distributions of photosynthetic marine invertebrate species are relatively well studied, however the importance of symbiont zonation (i.e. hosting of distinct algal endosymbiont communities over depth) in determining these depth distributions still remains unclear. Here, we assess the pr...

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Main Authors: Pim Bongaerts, Margaux Carmichael, Kyra B. Hay, Linda Tonk, Pedro R. Frade, Ove Hoegh-Guldberg
Format: Article
Language:English
Published: The Royal Society 2015-01-01
Series:Royal Society Open Science
Subjects:
Online Access:https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.140297
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author Pim Bongaerts
Margaux Carmichael
Kyra B. Hay
Linda Tonk
Pedro R. Frade
Ove Hoegh-Guldberg
author_facet Pim Bongaerts
Margaux Carmichael
Kyra B. Hay
Linda Tonk
Pedro R. Frade
Ove Hoegh-Guldberg
author_sort Pim Bongaerts
collection DOAJ
description Bathymetric distributions of photosynthetic marine invertebrate species are relatively well studied, however the importance of symbiont zonation (i.e. hosting of distinct algal endosymbiont communities over depth) in determining these depth distributions still remains unclear. Here, we assess the prevalence of symbiont zonation in tropical scleractinian corals by genotyping the Symbiodinium of the 25 most common species over a large depth range (down to 60 m) on a Caribbean reef. Symbiont depth zonation was found to be common on a reef-wide scale (11 out of 25 coral species), and a dominant feature in species with the widest depth distributions. With regards to reproductive strategy, symbiont zonation was more common in broadcasting species, which also exhibited a higher level of polymorphism in the symbiont zonation (i.e. number of different Symbiodinium profiles involved). Species with symbiont zonation exhibited significantly broader depth distributions than those without, highlighting the role of symbiont zonation in shaping the vertical distributions of the coral host. Overall, the results demonstrate that coral reefs can consist of highly structured communities over depth when considering both the coral host and their obligate photosymbionts, which probably has strong implications for the extent of connectivity between shallow and mesophotic habitats.
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spelling doaj.art-de67ca025abc46f48cf9eca0caf145cc2022-12-21T23:45:16ZengThe Royal SocietyRoyal Society Open Science2054-57032015-01-012210.1098/rsos.140297140297Prevalent endosymbiont zonation shapes the depth distributions of scleractinian coral speciesPim BongaertsMargaux CarmichaelKyra B. HayLinda TonkPedro R. FradeOve Hoegh-GuldbergBathymetric distributions of photosynthetic marine invertebrate species are relatively well studied, however the importance of symbiont zonation (i.e. hosting of distinct algal endosymbiont communities over depth) in determining these depth distributions still remains unclear. Here, we assess the prevalence of symbiont zonation in tropical scleractinian corals by genotyping the Symbiodinium of the 25 most common species over a large depth range (down to 60 m) on a Caribbean reef. Symbiont depth zonation was found to be common on a reef-wide scale (11 out of 25 coral species), and a dominant feature in species with the widest depth distributions. With regards to reproductive strategy, symbiont zonation was more common in broadcasting species, which also exhibited a higher level of polymorphism in the symbiont zonation (i.e. number of different Symbiodinium profiles involved). Species with symbiont zonation exhibited significantly broader depth distributions than those without, highlighting the role of symbiont zonation in shaping the vertical distributions of the coral host. Overall, the results demonstrate that coral reefs can consist of highly structured communities over depth when considering both the coral host and their obligate photosymbionts, which probably has strong implications for the extent of connectivity between shallow and mesophotic habitats.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.140297coral reefdepth distributionsymbiont zonationmesophoticsymbiodinium
spellingShingle Pim Bongaerts
Margaux Carmichael
Kyra B. Hay
Linda Tonk
Pedro R. Frade
Ove Hoegh-Guldberg
Prevalent endosymbiont zonation shapes the depth distributions of scleractinian coral species
Royal Society Open Science
coral reef
depth distribution
symbiont zonation
mesophotic
symbiodinium
title Prevalent endosymbiont zonation shapes the depth distributions of scleractinian coral species
title_full Prevalent endosymbiont zonation shapes the depth distributions of scleractinian coral species
title_fullStr Prevalent endosymbiont zonation shapes the depth distributions of scleractinian coral species
title_full_unstemmed Prevalent endosymbiont zonation shapes the depth distributions of scleractinian coral species
title_short Prevalent endosymbiont zonation shapes the depth distributions of scleractinian coral species
title_sort prevalent endosymbiont zonation shapes the depth distributions of scleractinian coral species
topic coral reef
depth distribution
symbiont zonation
mesophotic
symbiodinium
url https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.140297
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