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You are not always what you eat : fatty acid bioconversion and lipid homeostasis in the larvae of the sand mason worm Lanice conchilega

(2019) PLOS ONE. 14(6).
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Abstract
The meroplanktonic larvae of benthic organisms are an important seasonal component of the zooplankton in temperate coastal waters. The larvae of the reef-building polychaete Lanice conchilega contribute up to 15% of the summer zooplankton biomass in the North Sea. Despite their importance for reef maintenance (which positively affects the benthic community), little is known about the trophic ecology of this meroplanktonic larva. Qualitative and quantitative estimates of carbon (C) transfer between trophic levels and of fatty acid (FA) specific assimilation, biosynthesis, and bioconversion can be obtained by compound-specific stable isotope analysis of FA. The present work tested the hypothesis that the concept of fatty acid trophic markers (FATM), widely used for studies on holoplankton with intermediate to high lipid contents, is also applicable to lipid-poor organisms such as meroplanktonic larvae. The incorporation of isotopically-enriched dietary C by L. conchilega larvae was traced, and lipid assimilation did not follow FA-specific relative availabilities in the diet. Furthermore, FAs that were unavailable in the diet, such as 22:5(n-3), were recorded in L. conchilega, suggesting their bioconversion by the larvae. The results indicate that L. conchilega larvae preferentially assimilate certain FAs and regulate their FA composition (lipid homeostasis) independently of that of their diet. Their quasi-homeostatic response to dietary FA availability could imply that the concept of FATM has limited application in lipid-poor organisms such as L. conchilega larvae.
Keywords
BIOCHEMICAL-COMPOSITION, NUTRITIONAL IMPORTANCE, CALANUS-FINMARCHICUS, TEMORA-LONGICORNIS, TROPHIC MARKERS, 1766 ANNELIDA, PALLAS, ZOOPLANKTON, GROWTH, DIET

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Citation

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Chicago
Melo Franco Santos, Rita, Holger Auel, Maarten Boersma, Marleen De Troch, Martin Graeve, Cedric L Meunier, and Barbara Niehoff. 2019. “You Are Not Always What You Eat : Fatty Acid Bioconversion and Lipid Homeostasis in the Larvae of the Sand Mason Worm Lanice Conchilega.” Plos One 14 (6).
APA
Melo Franco Santos, R., Auel, H., Boersma, M., De Troch, M., Graeve, M., Meunier, C. L., & Niehoff, B. (2019). You are not always what you eat : fatty acid bioconversion and lipid homeostasis in the larvae of the sand mason worm Lanice conchilega. PLOS ONE, 14(6).
Vancouver
1.
Melo Franco Santos R, Auel H, Boersma M, De Troch M, Graeve M, Meunier CL, et al. You are not always what you eat : fatty acid bioconversion and lipid homeostasis in the larvae of the sand mason worm Lanice conchilega. PLOS ONE. 2019;14(6).
MLA
Melo Franco Santos, Rita et al. “You Are Not Always What You Eat : Fatty Acid Bioconversion and Lipid Homeostasis in the Larvae of the Sand Mason Worm Lanice Conchilega.” PLOS ONE 14.6 (2019): n. pag. Print.
@article{8619274,
  abstract     = {The meroplanktonic larvae of benthic organisms are an important seasonal component of the zooplankton in temperate coastal waters. The larvae of the reef-building polychaete Lanice conchilega contribute up to 15% of the summer zooplankton biomass in the North Sea. Despite their importance for reef maintenance (which positively affects the benthic community), little is known about the trophic ecology of this meroplanktonic larva. Qualitative and quantitative estimates of carbon (C) transfer between trophic levels and of fatty acid (FA) specific assimilation, biosynthesis, and bioconversion can be obtained by compound-specific stable isotope analysis of FA. The present work tested the hypothesis that the concept of fatty acid trophic markers (FATM), widely used for studies on holoplankton with intermediate to high lipid contents, is also applicable to lipid-poor organisms such as meroplanktonic larvae. The incorporation of isotopically-enriched dietary C by L. conchilega larvae was traced, and lipid assimilation did not follow FA-specific relative availabilities in the diet. Furthermore, FAs that were unavailable in the diet, such as 22:5(n-3), were recorded in L. conchilega, suggesting their bioconversion by the larvae. The results indicate that L. conchilega larvae preferentially assimilate certain FAs and regulate their FA composition (lipid homeostasis) independently of that of their diet. Their quasi-homeostatic response to dietary FA availability could imply that the concept of FATM has limited application in lipid-poor organisms such as L. conchilega larvae.},
  articleno    = {e0218015},
  author       = {Melo Franco Santos, Rita and Auel, Holger and Boersma, Maarten and De Troch, Marleen and Graeve, Martin and Meunier, Cedric L and Niehoff, Barbara},
  issn         = {1932-6203},
  journal      = {PLOS ONE},
  keywords     = {BIOCHEMICAL-COMPOSITION,NUTRITIONAL IMPORTANCE,CALANUS-FINMARCHICUS,TEMORA-LONGICORNIS,TROPHIC MARKERS,1766 ANNELIDA,PALLAS,ZOOPLANKTON,GROWTH,DIET},
  language     = {eng},
  number       = {6},
  pages        = {20},
  title        = {You are not always what you eat : fatty acid bioconversion and lipid homeostasis in the larvae of the sand mason worm Lanice conchilega},
  url          = {http://dx.doi.org/10.1371/journal.pone.0218015},
  volume       = {14},
  year         = {2019},
}

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