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Some diatom species do not show a gradual decrease in cell size as they reproduce

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This paper describes the results of long-term growth in culture of a clone of Gomphonema parvulum, which demonstrates that this taxon, unlike most other diatoms or other parts of G. parvulum, does not decrease in size as it reproduces vegetatively. After a period of eight months in culture, cells were significantly longer although valve widths were more or less the same. It is suggested that flexibility in the girdle region, particularly at the valve apices allows hypovalves to be the same size as, or longer than their corresponding epivalves. This phenomenon may be more widespread but may not have been noticed because the prevailing paradigm that diatoms decrease in size has not been questioned.
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Keywords: CELL SIZE REDUCTION; DIATOM; GOMPHONEMA PARVULUM; LONG-TERM CULTURES

Document Type: Research Article

Publication date: February 1, 2013

More about this publication?
  • Fundamental and Applied Limnology is an international journal for freshwater research in the widest sense, including problems of marine biology and brackish water research. Papers dealing with ecological topics are especially welcome in association with experimental or physiological studies. All papers published in this journal are subject to peer review.

    Archiv für Hydrobiologie, now Fundamental and Applied Limnology has been published continuously since 1906.

    Volumes prior to vol. 168 were published under the previous title Archiv für Hydrobiologie.
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