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Temperature affects the use of storage fatty acids as energy source in a benthic copepod (Platychelipus littoralis, Harpacticoida)

(2016) PLOS ONE. 11(3).
Author
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Abstract
The utilization of storage lipids and their associated fatty acids (FA) is an important means for organisms to cope with periods of food shortage, however, little is known about the dynamics and FA mobilization in benthic copepods (order Harpacticoida). Furthermore, lipid depletion and FA mobilization may depend on the ambient temperature. Therefore, we subjected the temperate copepod Platychelipus littoralis to several intervals (3, 6 and 14 days) of food deprivation, under two temperatures in the range of the normal habitat temperature (4, 15 degrees C) and under an elevated temperature (24 degrees C), and studied the changes in FA composition of storage and membrane lipids. Although bulk depletion of storage FA occurred after a few days of food deprivation under 4 degrees C and 15 degrees C, copepod survival remained high during the experiment, suggesting the catabolization of other energy sources. Ambient temperature affected both the degree of FA depletion and the FA mobilization. In particular, storage FA were more exhausted and FA mobilization was more selective under 15 degrees C compared with 4 degrees C. In contrast, depletion of storage FA was limited under an elevated temperature, potentially due to a switch to partial anaerobiosis. Food deprivation induced selective DHA retention in the copepod's membrane, under all temperatures. However, prolonged exposure to heat and nutritional stress eventually depleted DHA in the membranes, and potentially induced high copepod mortality. Storage lipids clearly played an important role in the short-term response of the copepod P. littoralis to food deprivation. However, under elevated temperature, the use of storage FA as an energy source is compromised.
Keywords
BIOCHEMICAL-COMPOSITION, JASUS-EDWARDSII PHYLLOSOMA, SELECTIVE MOBILIZATION, MICROBIAL BIOMASS, ISOTOPE ANALYSIS, TERM STARVATION, LIPIDS, ZOOPLANKTON, METABOLISM, MICROPHYTOBENTHOS

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Citation

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MLA
Werbrouck, Eva et al. “Temperature Affects the Use of Storage Fatty Acids as Energy Source in a Benthic Copepod (Platychelipus Littoralis, Harpacticoida).” PLOS ONE 11.3 (2016): n. pag. Print.
APA
Werbrouck, E., Van Gansbeke, D., Vanreusel, A., & De Troch, M. (2016). Temperature affects the use of storage fatty acids as energy source in a benthic copepod (Platychelipus littoralis, Harpacticoida). PLOS ONE, 11(3).
Chicago author-date
Werbrouck, Eva, Dirk Van Gansbeke, Ann Vanreusel, and Marleen De Troch. 2016. “Temperature Affects the Use of Storage Fatty Acids as Energy Source in a Benthic Copepod (Platychelipus Littoralis, Harpacticoida).” Plos One 11 (3).
Chicago author-date (all authors)
Werbrouck, Eva, Dirk Van Gansbeke, Ann Vanreusel, and Marleen De Troch. 2016. “Temperature Affects the Use of Storage Fatty Acids as Energy Source in a Benthic Copepod (Platychelipus Littoralis, Harpacticoida).” Plos One 11 (3).
Vancouver
1.
Werbrouck E, Van Gansbeke D, Vanreusel A, De Troch M. Temperature affects the use of storage fatty acids as energy source in a benthic copepod (Platychelipus littoralis, Harpacticoida). PLOS ONE. 2016;11(3).
IEEE
[1]
E. Werbrouck, D. Van Gansbeke, A. Vanreusel, and M. De Troch, “Temperature affects the use of storage fatty acids as energy source in a benthic copepod (Platychelipus littoralis, Harpacticoida),” PLOS ONE, vol. 11, no. 3, 2016.
@article{7212127,
  abstract     = {The utilization of storage lipids and their associated fatty acids (FA) is an important means for organisms to cope with periods of food shortage, however, little is known about the dynamics and FA mobilization in benthic copepods (order Harpacticoida). Furthermore, lipid depletion and FA mobilization may depend on the ambient temperature. Therefore, we subjected the temperate copepod Platychelipus littoralis to several intervals (3, 6 and 14 days) of food deprivation, under two temperatures in the range of the normal habitat temperature (4, 15 degrees C) and under an elevated temperature (24 degrees C), and studied the changes in FA composition of storage and membrane lipids. Although bulk depletion of storage FA occurred after a few days of food deprivation under 4 degrees C and 15 degrees C, copepod survival remained high during the experiment, suggesting the catabolization of other energy sources. Ambient temperature affected both the degree of FA depletion and the FA mobilization. In particular, storage FA were more exhausted and FA mobilization was more selective under 15 degrees C compared with 4 degrees C. In contrast, depletion of storage FA was limited under an elevated temperature, potentially due to a switch to partial anaerobiosis. Food deprivation induced selective DHA retention in the copepod's membrane, under all temperatures. However, prolonged exposure to heat and nutritional stress eventually depleted DHA in the membranes, and potentially induced high copepod mortality. Storage lipids clearly played an important role in the short-term response of the copepod P. littoralis to food deprivation. However, under elevated temperature, the use of storage FA as an energy source is compromised.},
  articleno    = {e0151779},
  author       = {Werbrouck, Eva and Van Gansbeke, Dirk and Vanreusel, Ann and De Troch, Marleen},
  issn         = {1932-6203},
  journal      = {PLOS ONE},
  keywords     = {BIOCHEMICAL-COMPOSITION,JASUS-EDWARDSII PHYLLOSOMA,SELECTIVE MOBILIZATION,MICROBIAL BIOMASS,ISOTOPE ANALYSIS,TERM STARVATION,LIPIDS,ZOOPLANKTON,METABOLISM,MICROPHYTOBENTHOS},
  language     = {eng},
  number       = {3},
  pages        = {16},
  title        = {Temperature affects the use of storage fatty acids as energy source in a benthic copepod (Platychelipus littoralis, Harpacticoida)},
  url          = {http://dx.doi.org/10.1371/journal.pone.0151779},
  volume       = {11},
  year         = {2016},
}

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