International Journal of
Biodiversity and Conservation

  • Abbreviation: Int. J. Biodivers. Conserv.
  • Language: English
  • ISSN: 2141-243X
  • DOI: 10.5897/IJBC
  • Start Year: 2009
  • Published Articles: 679

Full Length Research Paper

Occurrence of endosymbiont Richelia intracellularis (Cyanophyta) within the diatom Rhizosolenia hebetata in the Northern Arabian Sea

K. B. Padmakumar1*, N. R. Menon2 and V. N. Sanjeevan1
  1Centre for Marine Living Resources and Ecology, Ministry of Earth Sciences, Kochi-37, Kerala, India. 2School of Marine Sciences, Cochin University of Science and Technology, Kochi-16, Kerala, India.  
Email: [email protected]

  •  Accepted: 04 January 2010
  •  Published: 30 April 2010

Abstract

 

The presence of diazotrophic cyanobacterium Richelia intracellularis Schmidt as an endosymbiont of Rhizosolenia hebetata was observed in the phytoplankton samples collected from the Northern Arabian Sea during the fag end of winter monsoon (February - March). R. hebetata formed 80% Rhizosolenia population and 60% of this species harboured endosymbiotic cyanobacterium R. intracellularis. This is an indication that Richelia-Rhizosolenia interaction could have a significant influence on nutrient and energy budgets of the Northern Arabian Sea.

 

Key words: Rhizosolenia, diatom, Richelia intracellularis, cyanobacteria, Northern Arabian Sea.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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