Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Grazing on diatoms by harpacticoid copepods: species-specific density-dependent uptake and microbial gardening
De Troch, M.; Steinarsdóttir, M.B.; Chepurnov, V.; Ólafsson, E. (2005). Grazing on diatoms by harpacticoid copepods: species-specific density-dependent uptake and microbial gardening. Aquat. Microb. Ecol. 39(2): 135-144. dx.doi.org/10.3354/ame039135
In: Aquatic Microbial Ecology. Inter-Research: Oldendorf/Luhe. ISSN 0948-3055; e-ISSN 1616-1564
|   |
| Trefwoorden |
Algae > Diatoms
Behaviour > Feeding behaviour > Grazing
Food conversion
Isotopes
Bacillariophyceae [WoRMS]; Copepoda [WoRMS]
Marien/Kust |
| Author keywords |
copepoda; diatoms; grazing; assimilation; stable isotopes |
| Auteurs | | Top |
- De Troch, M.
- Steinarsdóttir, M.B.
- Chepurnov, V.
- Ólafsson, E.
|
|
|
| Abstract |
Four common intertidal harpacticoid species (Paramphiascella fulvofasciata, Tigriopus brevicornis, Nitocra spinipes and Harpacticus obscurus) were offered pelagic diatoms (Phaeodactylum tricornutum) as food in laboratory experiments. To ensure generality we used copepod species originating from diverse habitats with different ecological characteristics. The diatoms were enriched in the stable carbon 13C isotope to facilitate tracing in the harpacticoids. Uptake of diatoms was clearly species-specific and in general P. fulvofasciata was more efficient than the other species. We found significant uptake by 24 h of incubation for T. brevicornis. From 24 h onwards we found an increase for all 3 species. Species had similar d13C values before and after starvation, indicating that labeled material was efficiently assimilated in their tissues. We tested whether diatom assimilation is density-dependent and this was true for 2 species (N. spinipes and P. fulvofasciata) but not for the semi-pelagic T. brevicornis. Finally, a positive effect of faecal pellets on food uptake for the less mobile species was shown, indicating that microbial gardening occurs within benthic harpacticoids as it does for several other crustacean species. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
