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Temperature impact on the trophic transfer of fatty acids in the congeneric copepods Acartia tonsa and Acartia clausi
Werbrouck, E.; Tiselius, P.; Van Gansbeke, D.; Cervin, G.; Vanreusel, A.; De Troch, M. (2016). Temperature impact on the trophic transfer of fatty acids in the congeneric copepods Acartia tonsa and Acartia clausi. J. Sea Res. 112: 41-48. https://dx.doi.org/10.1016/j.seares.2016.03.001
In: Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg. ISSN 1385-1101; e-ISSN 1873-1414
Peer reviewed article  
Available in  Authors 
    Vlaams Instituut voor de Zee: Non-open access 288706 [ request ]
Keywords
    Acids > Organic compounds > Organic acids > Fatty acids
    Chemical compounds > Organic compounds > Lipids
    Climate Change > Climate Change General
    Environmental Managers & Monitoring
    Marine Sciences
    Marine Sciences > Marine Sciences General
    Properties > Physical properties > Thermodynamic properties > Temperature
    Scientific Community
    Scientific Publication
    Storage
    Acartia Dana, 1846 [WoRMS]
    Marine/Coastal
Author keywords
    Acartia sp.; Membrane
Project Top | Authors 
  • Association of European marine biological laboratories
Authors  Top 
  • Werbrouck, E.
  • Tiselius, P.
  • Van Gansbeke, D.
  • Cervin, G.
  • Vanreusel, A.
  • De Troch, M.
Abstract
    Copepods of the genus Acartia occur worldwide and constitute an important link to higher trophic levels in estuaries. However, biogeographical shifts in copepod assemblages and colonization of certain European estuaries by the invader A. tonsa, both driven or enhanced by increasing ocean temperature, raise the pressure on autochthonous copepod communities. Despite the profound effect of temperature on all levels of biological organization, its impact on the fatty acid (FA) dynamics of Acartia species is understudied. As certain FAs exert a bottom-up control on the trophic structure of aquatic ecosystems, temperature-induced changes in FA dynamics of Acartia species may impact higher trophic levels. Therefore, this study documents the short-term temperature responses of A. tonsa and A. clausi, characterized by their warm- versus cold-water preference respectively, by analyzing the FA profiles of their membrane and storage lipids under 5 and 15° C. Copepods that were fed an ad libitum diet of the diatom Thalassiosira weissflogii (bloom conditions) under 15° C increased their storage FA content substantially. Furthermore, the membrane FA composition of A. tonsa showed a more profound temperature response compared with A. clausi which might be linked with the eurythermal character of the former.
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