Biogeography and molecular diversity of coral symbionts in the genus Symbiodinium around the Arabian Peninsula

Maren Ziegler, Chatchanit Arif, John A. Burt, Sergey Dobretsov, Cornelia Roder, Todd C. LaJeunesse, Christian R. Voolstra

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Aim: Coral reefs rely on the symbiosis between scleractinian corals and intracellular, photosynthetic dinoflagellates of the genus Symbiodinium making the assessment of symbiont diversity critical to our understanding of ecological resilience of these ecosystems. This study characterizes Symbiodinium diversity around the Arabian Peninsula, which contains some of the most thermally diverse and understudied reefs on Earth. Location: Shallow water coral reefs throughout the Red Sea (RS), Sea of Oman (SO), and Persian/Arabian Gulf (PAG). Methods: Next-generation sequencing of the ITS2 marker gene was used to assess Symbiodinium community composition and diversity comprising 892 samples from 46 hard and soft coral genera. Results: Corals were associated with a large diversity of Symbiodinium, which usually consisted of one or two prevalent symbiont types and many types at low abundance. Symbiodinium communities were strongly structured according to geographical region and to a lesser extent by coral host identity. Overall symbiont communities were composed primarily of species from clade A and C in the RS, clade A, C, and D in the SO, and clade C and D in the PAG, representing a gradual shift from C- to D-dominated coral hosts. The analysis of symbiont diversity in an Operational Taxonomic Unit (OTU)-based framework allowed the identification of differences in symbiont taxon richness over geographical regions and host genera. Main conclusions: Our study represents a comprehensive overview over biogeography and molecular diversity of Symbiodinium in the Arabian Seas, where coral reefs thrive in one of the most extreme environmental settings on the planet. As such our data will serve as a baseline for further exploration into the effects of environmental change on host–symbiont pairings and the identification and ecological significance of Symbiodinium types from regions already experiencing ‘Future Ocean’ conditions.

Original languageEnglish
Pages (from-to)674-686
Number of pages13
JournalJournal of Biogeography
Volume44
Issue number3
DOIs
Publication statusPublished - Mar 1 2017

Fingerprint

Symbiodinium
symbiont
biogeography
symbionts
corals
coral
coral reef
geographical region
coral reefs
Persian Gulf
Oman
Red Sea
soft coral
symbiosis
dinoflagellate
community composition
Arabian Sea
environmental change
reef
shallow water

Keywords

  • coral reef
  • ecosystem
  • ITS2
  • next-generation sequencing
  • Persian/Arabian Gulf
  • Red Sea
  • Sea of Oman
  • symbiosis

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology

Cite this

Biogeography and molecular diversity of coral symbionts in the genus Symbiodinium around the Arabian Peninsula. / Ziegler, Maren; Arif, Chatchanit; Burt, John A.; Dobretsov, Sergey; Roder, Cornelia; LaJeunesse, Todd C.; Voolstra, Christian R.

In: Journal of Biogeography, Vol. 44, No. 3, 01.03.2017, p. 674-686.

Research output: Contribution to journalArticle

Ziegler, Maren ; Arif, Chatchanit ; Burt, John A. ; Dobretsov, Sergey ; Roder, Cornelia ; LaJeunesse, Todd C. ; Voolstra, Christian R. / Biogeography and molecular diversity of coral symbionts in the genus Symbiodinium around the Arabian Peninsula. In: Journal of Biogeography. 2017 ; Vol. 44, No. 3. pp. 674-686.
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AU - LaJeunesse, Todd C.

AU - Voolstra, Christian R.

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