| _version_ | 1867169411202285568 |
|---|---|
| author | Franco-Santos, Rita Melo Auel, Holger Boersma, Maarten De Troch, Marleen Graeve, Martin Meunier, Cédric Léo Niehoff, Barbara |
| author_facet | Franco-Santos, Rita Melo Auel, Holger Boersma, Maarten De Troch, Marleen Graeve, Martin Meunier, Cédric Léo Niehoff, Barbara |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The larvae of the reef-building polychaete Lanice conchilega can make 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_900105 |
| institution | PANGAEA |
| language | en |
| publishDate | 2019 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Carbon and nitrogen contents for the larvae of the polychaete Lanice conchilega Franco-Santos, Rita Melo Auel, Holger Boersma, Maarten De Troch, Marleen Graeve, Martin Meunier, Cédric Léo Niehoff, Barbara assimilation; bioconversion; Biomass as carbon; Biomass as carbon per larvae; Biomass as nitrogen; Biomass as nitrogen per larvae; Calculated; Carbon/Nitrogen ratio; Comment; compound-specific stable isotopes; DATE/TIME; Dry mass per larvae; fatty acid trophic markers; German Bight, North Sea; HelgolandRoads_larvae_2016; Kabeltonne; LATITUDE; lipid-poor species; LONGITUDE; meroplanktonic larvae; Polychaeta, larvae; polychaete; Replicate; Sample mass; Species The larvae of the reef-building polychaete Lanice conchilega can make 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. |
| title | Carbon and nitrogen contents for the larvae of the polychaete Lanice conchilega |
| topic | assimilation; bioconversion; Biomass as carbon; Biomass as carbon per larvae; Biomass as nitrogen; Biomass as nitrogen per larvae; Calculated; Carbon/Nitrogen ratio; Comment; compound-specific stable isotopes; DATE/TIME; Dry mass per larvae; fatty acid trophic markers; German Bight, North Sea; HelgolandRoads_larvae_2016; Kabeltonne; LATITUDE; lipid-poor species; LONGITUDE; meroplanktonic larvae; Polychaeta, larvae; polychaete; Replicate; Sample mass; Species |
| url | https://doi.org/10.1594/PANGAEA.900105 |