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Marine Biology

, Volume 143, Issue 6, pp 1193–1199 | Cite as

Specificity of two temperate dinoflagellate–anthozoan associations from the north-western Pacific Ocean

  • M. Rodriguez-Lanetty
  • Soo-Jung Chang
  • Jun-Im SongEmail author
Research Article

Abstract

Whilst many studies of symbiotic dinoflagellate diversity have focused on tropical reef environments, only a few have explored the degree and pattern of divergence of these endosymbionts at high latitudes. In this study, the genetic diversity and specificity of symbiotic dinoflagellates associated with two common anthozoan hosts in the north-western Pacific Ocean was studied in four different seasons during a period of 1 year. Partial nucleotide sequences of 28S and complete ITS1 ribosomal DNA regions were used to identify, genetically, the endosymbionts extracted from the scleractinian Alveopora japonica and the actinarian Heteractis sp. A. japonica harbours symbionts belonging to Symbiodinium of clade F, while Heteractis sp. associates with Symbiodinium of clade C. Moreover, no seasonal changes in the endosymbiont community were detected in these two associations during this study. This is the first evidence that these two temperate cnidarian–microalgae symbioses are stable. Furthermore, we tested the apparent specificity of the Heteractis sp.– Symbiodinium sp. clade C association, by performing alga-infection experiments with aposymbiotic hosts, and monitoring the uptake and persistence of homologous and heterologous symbionts. The findings confirm the association patterns detected in the field and show that Heteractis sp. only establishes a successful association with Symbiodinium cells of clade C, at least among the heterologous symbionts occurring in the study area. Our results are consistent with the idea that selective pressures in highly fluctuating temperate environments might have granted symbiosis-specificity an adaptive value.

Keywords

Dinoflagellate Scleractinian Coral ITS1 rDNA Symbiotic Dinoflagellate Bleaching Procedure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

We are grateful to H. Cha and Y. Lee for assistance in the collection of samples, and S. Hwang for helping in the maintenance of the aquarium systems. We also want to thank to Dr. G. Muller-Parker and Dr. S. Davy for their comments on a first draft of our manuscript. This work was supported by a grant No. R04-2000-0001P from the Korean Science and Engineering Foundation (to J.I.S.).

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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • M. Rodriguez-Lanetty
    • 1
    • 2
  • Soo-Jung Chang
    • 1
  • Jun-Im Song
    • 1
    Email author
  1. 1.Department of Life SciencesEwha Women's UniversitySeoulKorea
  2. 2.Department of ZoologyOregon State UniversityCorvallisUSA

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