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| Titel |
Dinoflagellate bioluminescence in response to mechanical stimuli in water flows |
| VerfasserIn |
A. S. Cussatlegras, P. Gal |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 12, no. 3 ; Nr. 12, no. 3 (2005-02-21), S.337-343 |
| Datensatznummer |
250010589
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| Publikation (Nr.) |
 copernicus.org/npg-12-337-2005.pdf |
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| Zusammenfassung |
| Bioluminescence of plankton organisms induced by water movements has long
been observed and is still under investigations because of its great
complexity. In particular, the exact mechanism occurring at the level of the
cell has not been yet fully understood. This work is devoted to the study of
the bioluminescence of the dinoflagellates plankton species
Pyrocystis noctiluca in response to mechanical stimuli generated by water
flows. Several experiments were performed with different types of flows in a
Couette shearing apparatus. All of them converge to the conclusion that
stationary homogeneous laminar shear does not trigger massive
bioluminescence, but that acceleration and shear are both necessary to
stimulate together an intense bioluminescence response. The distribution of
the experimental bioluminescence thresholds is finally calculated from the
light emission response for the Pyrocystis noctiluca species. |
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