• Effect of the epidermal secretions of Hemichordate,Ptychodera flava on growth ofAmphora coffeaeformis andCyclotella meneghiniana (Diatoms)

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      https://www.ias.ac.in/article/fulltext/anml/087/06/0145-0149

    • Keywords

       

      Ptychodera flava ; epidermal secretions; Amphora coffeaeformis ; Cyclotella meneghiniana

    • Abstract

       

      The effect of epidermal secretions ofPtychodera flava collected during nonbreeding and breeding seasons on growth of two diatomsAmphora coffeaeformis andCyclotella meneghiniana is studied. Differential effect of the secretions on growth rate of the diatoms indicates differences in their potency. Low concentrations tend to stimulate growth. The ecological significance of the secretions has been briefly commented upon.

    • Author Affiliations

       

      Jayapaul Azariah1 V N R Rao2 V T Sridharan2

      1. Department of Zoology, University of Madras, Madras - 600 005
      2. Centre of Advanced Study in Botany, University of Madras, Madras - 600 005
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