Growth characterization of non-photosynthetic diatoms, <i>Nitzschia</i> spp., inhabiting estuarine mangrove forests of Ishigaki Island, Japan

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Abstract

The non-photosynthetic diatoms <i>Nitzschia</i> spp. are known to have evolved from photosynthetic species to heterotrophic species by the loss of photosynthesis. We investigated their ability to tolerate wide ranges of temperatures and salinities. <i>Nitzschia</i> spp. were capable of surviving or thriving even at 5°C and 35°C. In addition, these diatoms were also capable of surviving at salinities of 0.5 and 12.0, while thriving at those from 1.0 to 9.0. Such tolerance to a wide range of temperatures and salinities would allow these non-photosynthetic diatoms to thrive in mangrove estuaries, where environmental conditions often drastically fluctuate. Our experiments revealed that the growth rates of the non-photosynthetic diatoms were larger than those estimated based on cell volumes and temperature, suggesting that these non-photosynthetic diatoms may be an important group of organisms contributing to material circulation by growing heterotrophically in mangrove estuaries.

Journal

  • Plankton and Benthos Research

    Plankton and Benthos Research 12(3), 164-170, 2017

    The Plankton Society of Japan, The Japanese Association of Benthology

Codes

  • NII Article ID (NAID)
    130005998677
  • NII NACSIS-CAT ID (NCID)
    AA12130745
  • Text Lang
    ENG
  • ISSN
    1880-8247
  • NDL Article ID
    028463476
  • NDL Call No.
    Z54-J424
  • Data Source
    NDL  J-STAGE 
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