Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
An inter-order comparison of copepod fatty acid composition and biosynthesis in response to a long-chain PUFA deficient diet along a temperature gradient
Sahota, R.; Boyen, J.; Semmouri, I.; Bodé, S.; De Troch, M. (2022). An inter-order comparison of copepod fatty acid composition and biosynthesis in response to a long-chain PUFA deficient diet along a temperature gradient. Mar. Biol. (Berl.) 169: 133. https://dx.doi.org/10.1007/s00227-022-04121-z
In: Marine Biology: International Journal on Life in Oceans and Coastal Waters. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793, meer
|  |
| Trefwoorden |
Calanoida [WoRMS]; Harpacticoida [WoRMS]
Marien/Kust |
| Author keywords |
Biosynthesis · Calanoid copepod · Carbon assimilation · Climate change · Fatty acids · Harpacticoid copepod |
| Abstract |
Copepods serve as a major link in marine food webs, bridging the energy transfer from primary producers to higher trophic levels. Oceanic warming is linked to reduced concentrations of essential fatty acids (FA) in phytoplankton, namely eicosapentaenoic acid (EPA, 20:5ω3) and docosahexaenoic acid (DHA, 22:6ω3), and it remains largely unknown if copepods have the capacity to endure. The calanoid Temora longicornis and the harpacticoid Platychelipus littoralis were chosen to analyse their FA and biosynthesis activity in response to a long-chain polyunsaturated FA (LC-PUFA) deficient diet (Dunaliella tertiolecta) along a temperature gradient. Copepods were fed D. tertiolecta labelled with the stable isotope carbon-13 (13C) to quantify carbon assimilation into their total FA and de novo EPA and DHA biosynthesis after 6 days incubated at 11, 14, 17, 20 and 23 °C. The calanoid had increased mortality with warming, whereas the harpacticoid exhibited high survival across the thermal gradient. After the incubation, P. littoralis assimilated minimal amounts of dietary carbon into its total FA in comparison to T. longicornis. T. longicornis depleted their field EPA and DHA stores more rapidly, whereas P. littoralis maintained its relative storage of EPA and DHA and absolute concentrations of DHA. T. longicornis displayed higher fractions of de novo EPA and DHA biosynthesis than P. littoralis at all temperatures, with the exception of DHA at 23 °C. Within our experimental incubation period both species were unable to meaningfully upgrade the LC-PUFA deficient algae to biosynthesize de novo EPA and DHA as a relevant source for higher trophic levels. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
