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Phototactic responses of Elachista antarctica (Phaeophyceae) spores of different ages across a broad irradiance range using new motion analysis software

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Published/Copyright: November 8, 2012
Botanica Marina
From the journal Botanica Marina Volume 55 Issue 6

Abstract

Phototactic movements of Elachista antarctica spores were quantified across a wide range of irradiances from 10 to 800 μmol photons m-2 s-1 using the recently updated version of CellTrak 1.5 motion analysis software. Spores 0–12 h old exhibited phototactic attraction at 80 and 200 μmol photons m-2 s-1, which contributed to vertical movements up out of the boundary layer to be further dispersed hydrodynamically, but were repelled at 800 μmol photons m-2 s-1, causing spores to retreat from detrimental irradiances. No significant effects were observed among spores released 24–36 h before measuring phototaxis at 200 and 800 μmol photons m-2 s-1.

Keywords: Elachista antarctica; epiphyte; irradiance; phototactic; spore
Corresponding author: Philip Bucolo, Department of Biology, University of Alabama at Birmingham, Birmingham, AL 35294-1170, USA
Received: 2012-4-12
Accepted: 2012-10-4
Published Online: 2012-11-08
Published in Print: 2012-12-01

©2012 by Walter de Gruyter Berlin Boston

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  1. Masthead
  2. Masthead
  3. Mini review
  4. The diversity and importance of fungi associated with marine sponges
  5. Research articles
  6. Chemical analysis of exopolysaccharide fractions and lipid compounds of the microalga Heterosigma akashiwo grown in vitro
  7. Nutraceutical properties of the marine macroalga Gayralia oxysperma
  8. Hormone-autonomous cell culture from cotydelonary tissue of the marine plant Cymodocea nodosa
  9. Development and evaluation of an automated digital image analysis software for obtaining seagrass leaf metrics
  10. Factors associated with moderate blooms of Pyrodinium bahamense in shallow and restricted subtropical lagoons in the Gulf of California
  11. Species composition and spatial variability of macroalgal assemblages on biogenic reefs in the northern Adriatic Sea
  12. Short communications
  13. Phototactic responses of Elachista antarctica (Phaeophyceae) spores of different ages across a broad irradiance range using new motion analysis software
  14. Southern expansion of the brown alga Colpomenia peregrina Sauvageau (Scytosiphonales) in the Northwest Atlantic Ocean
https://doi.org/10.1515/bot-2012-0140
Keywords for this article
Elachista antarctica; epiphyte; irradiance; phototactic; spore

Articles in the same Issue

  1. Masthead
  2. Masthead
  3. Mini review
  4. The diversity and importance of fungi associated with marine sponges
  5. Research articles
  6. Chemical analysis of exopolysaccharide fractions and lipid compounds of the microalga Heterosigma akashiwo grown in vitro
  7. Nutraceutical properties of the marine macroalga Gayralia oxysperma
  8. Hormone-autonomous cell culture from cotydelonary tissue of the marine plant Cymodocea nodosa
  9. Development and evaluation of an automated digital image analysis software for obtaining seagrass leaf metrics
  10. Factors associated with moderate blooms of Pyrodinium bahamense in shallow and restricted subtropical lagoons in the Gulf of California
  11. Species composition and spatial variability of macroalgal assemblages on biogenic reefs in the northern Adriatic Sea
  12. Short communications
  13. Phototactic responses of Elachista antarctica (Phaeophyceae) spores of different ages across a broad irradiance range using new motion analysis software
  14. Southern expansion of the brown alga Colpomenia peregrina Sauvageau (Scytosiphonales) in the Northwest Atlantic Ocean
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