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Marine Biology

, Volume 148, Issue 1, pp 35–41 | Cite as

Transmission, plasticity and the molecular identification of cyanobacterial symbionts in the Red Sea sponge Diacarnus erythraenus

  • Matan Oren
  • Laura Steindler
  • Micha Ilan
Research Article

Abstract

Cyanobacterial symbionts in the sponge Diacarnus erythraenus from the Red Sea were identified in both adult sponges and their larvae by 16S rDNA sequencing. A single cyanobacterial type was found in all samples. This cyanobacterial type is closely related to other sponge cyanobacterial symbionts. The cyanobacterial rDNA, together with the morphological analysis by electron and fluorescence microscopy, provided evidence for vertical transmission of the symbionts in this sponge. In addition, we show phenotypic plasticity of the symbionts inside the sponge, probably as a result of variability in light availability inside the sponge tissue. Finally, the reproduction of Diacarnus erythraenus is also described.

Keywords

Sponge Synechococcus Vertical Transmission Marine Sponge Sponge Species 
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

This work was financially supported by Grant 2000-321 from the United States–Israel Binational Science Foundation (BSF) to M. Ilan, S. Beer and J.R. Pawlik. I. Brickner is thanked for histological preparations, and Y. Delarea for assistance with electron microscopy. S. Beer is thanked for his editorial comments of the manuscript. We thank the staff of the Inter-University Institute in Elat for their help during the course of this study. Samples were collected in compliance with the 2003/16729 permit from the Israel Nature and National Parks Protection Authority.

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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.Department of Zoology, George S. Wise Faculty of Life SciencesTel Aviv UniversityTel AvivIsrael
  2. 2.Department of Plant Sciences, George S. Wise Faculty of Life SciencesTel Aviv UniversityTel AvivIsrael

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