|Consumption of diatoms and diatom filtrates by the tentaculate deposit-feeder Eupolymnia nebulosa (Annelida: Polychaeta)|
Gremare, A. (1990). Consumption of diatoms and diatom filtrates by the tentaculate deposit-feeder Eupolymnia nebulosa (Annelida: Polychaeta). Mar. Biol. (Berl.) 106(1): 139-143
In: Marine Biology. Springer: Heidelberg; Berlin. ISSN 0025-3162, more
Detritus feeders; Feeding experiments; Filter feeders; Food consumption; Food preferences; Grazing; Bacillariophyceae [WoRMS]; Eupolymnia nebulosa (Montagu, 1819) [WoRMS]; Nitzschia incerta (Grunow) M.Peragallo, 1903 [WoRMS]; Polychaeta [WoRMS]; MED, France [Marine Regions]
Rates of organic uptakes of three live diatoms (Nitzschia acicularis, Nitzschia sp. and Navicula incerta), and of three corresponding filtrates by the deposit-feeding polychaete Eupolymnia nebulosa (Montagu) were measured under similar experimental conditions. Worms used during this study were collected by SCUBA diving at Port-Vendres in shallow water (7 m deep) during the summer of 1986. Uptake rates of live diatoms were affected both by length of the experiments and by the nature of the food offered. The highest rate of uptake (11.8/104 mg algal ash-free dry wt/mg worm dry wt/h) was recorded during a short-term experiment (4 h) with the smallest diatom (Nitzschia) sp.). The lowest rate (1.1/104 mg algal ash-free dry wt/mg worm dry wt/h) was recorded during a long-term experiment (48 h) with the largest diatom (Nitzschia acicularis)).