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Relationship between strains of Coolia monotis (Dinophyceae) from the Atlantic Iberian Peninsula and their sampling sites
David, H.; Kromkamp, J.C.; Orive, E. (2017). Relationship between strains of Coolia monotis (Dinophyceae) from the Atlantic Iberian Peninsula and their sampling sites. J. Exp. Mar. Biol. Ecol. 487: 59-67. dx.doi.org/10.1016/j.jembe.2016.11.014
In: Journal of Experimental Marine Biology and Ecology. Elsevier: New York. ISSN 0022-0981; e-ISSN 1879-1697, meer
Peer reviewed article  

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Trefwoord
    Coolia monotis Meunier, 1919 [WoRMS]
Author keywords
    Coolia monotis; Growth rates; High-light stress; Photophysiology

Auteurs  Top 
  • David, H.
  • Kromkamp, J.C.
  • Orive, E.

Abstract
    Strains of Coolia monotis from three locations (north, center and south) of the Atlantic Iberian Peninsula werestudied to undercover possible geographic preferences in their photophysiology. Growth rates and photosyntheticparameters such as Fv/Fm, α, Ek and rETRmax were analyzed with a Coulter counter, a Water-PAM and aFRRF. The photosynthetic properties were investigated in experiments using strains acclimated to Low Light(LL) and High Light (HL) during the course of a day. The same strains were also used for a HL stress experiment.The highest growth rate (0.29 d−1) corresponded to Galé strain, from the south of the Peninsula, under200 μmol photons m−2 s−1, suggesting that it was adapted to higher irradiances than the other 2 strains. Therapid light curves taken during the course of a day showed no differences between the strains, but the ones acclimatedto LL had higher rETRmax and α, and lower Ek values than the ones acclimated to HL. The HL stress exposureinduced photodamage to all strains and the recovery period was not sufficiently long for full recovery ofFv/Fm. Results demonstrated that strains responded differently to treatments, even thoughwere genetically identicalat the 28S/ITS-levels. These differences could be related to their original location.

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