The roles of age, parentage and environment on bacterial and algal endosymbiont communities in Acropora corals

Wing Yan Chan, Lesa M. Peplow, Patricia Menéndez, Ary A. Hoffmann, Madeleine J.H. van Oppen

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

The bacterial and microalgal endosymbiont (Symbiodiniaceae spp.) communities associated with corals have important roles in their health and resilience, yet little is known about the factors driving their succession during early coral life stages. Using 16S rRNA gene and ITS2 metabarcoding, we compared these communities in four Acropora coral species and their hybrids obtained from two laboratory crosses (Acropora tenuis × Acropora loripes and Acropora sarmentosa × Acropora florida) across the parental, recruit (7 months old) and juvenile (2 years old) life stages. We tested whether microbiomes differed between (a) life stages, (b) hybrids and purebreds, and (c) treatment conditions (ambient/elevated temperature and pCO2). Microbial communities of early life stage corals were highly diverse, lacked host specificity and were primarily determined by treatment conditions. Over time, a winnowing process occurred, and distinct microbial communities developed between the two species pair crosses by 2 years of age, irrespective of hybrid or purebred status. These findings suggest that the microbial communities of corals have a period of flexibility prior to adulthood, which can be valuable to future research aimed at the manipulation of coral microbial communities.

Original languageEnglish
Number of pages36
JournalMolecular Ecology
DOIs
Publication statusAccepted/In press - 22 Jul 2019

Keywords

  • Acropora corals
  • bacteria
  • holobiont
  • microbial community
  • Symbiodiniaceae

Cite this

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abstract = "The bacterial and microalgal endosymbiont (Symbiodiniaceae spp.) communities associated with corals have important roles in their health and resilience, yet little is known about the factors driving their succession during early coral life stages. Using 16S rRNA gene and ITS2 metabarcoding, we compared these communities in four Acropora coral species and their hybrids obtained from two laboratory crosses (Acropora tenuis × Acropora loripes and Acropora sarmentosa × Acropora florida) across the parental, recruit (7 months old) and juvenile (2 years old) life stages. We tested whether microbiomes differed between (a) life stages, (b) hybrids and purebreds, and (c) treatment conditions (ambient/elevated temperature and pCO2). Microbial communities of early life stage corals were highly diverse, lacked host specificity and were primarily determined by treatment conditions. Over time, a winnowing process occurred, and distinct microbial communities developed between the two species pair crosses by 2 years of age, irrespective of hybrid or purebred status. These findings suggest that the microbial communities of corals have a period of flexibility prior to adulthood, which can be valuable to future research aimed at the manipulation of coral microbial communities.",
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The roles of age, parentage and environment on bacterial and algal endosymbiont communities in Acropora corals. / Chan, Wing Yan; Peplow, Lesa M.; Menéndez, Patricia; Hoffmann, Ary A.; van Oppen, Madeleine J.H.

In: Molecular Ecology, 22.07.2019.

Research output: Contribution to journalArticleResearchpeer-review

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