6533b82afe1ef96bd128cca9
RESEARCH PRODUCT
Diel feeding habits of juveniles of Mullus surmuletus (Linneo, 1758) in the lagoon of the Stagnone di Marsala (Western Sicily, Italy)
Antonio MazzolaGianluca SaràT. La RosaL. Lopianosubject
Settore BIO/07 - EcologiaAmphipodaMullus surmuletusbiologydiet composition feeding rhythm gastric evacuation rate daily ration food consumption striped red mullet Mediterranean SeaFood consumptionAquatic Sciencebiology.organism_classificationPredationFisheryAnimal scienceDry weightJuvenileDiel vertical migrationTanaidaceadescription
Diet composition, feeding rhythm, gastric evacuation rate and daily ration were investigated in juvenile Mulhis surmuletus (Linneo, 1758). Fish were collected in the lagoon of the Stagnone di Marsala in western Sicily, in July 1995, during a 24 h sampling period. Copepoda, Polychaeta, Amphipoda and Tanaidacea were shown to be the most frequent prey items. The feeding index values showed two different daily feeding times. A unimodal trend in the daily rhythm of food consumption was derived, with a peak in feeding between 1200 and 2000 h. Gastric evacuation in juvenile M. surmuletus is best described by an exponential model, with a gastric evacuation rate R = 0.66 g h-1 (r = 0.88) (T = 24.45 ± 0.64°C). The amount of food consumed daily, calculated according to the Elliott and Persson model, was 0.079 g, equal to about 8% of the average dry weight of the fish. © 1999 Blackwell Wissenschafts-Verlag, Berlin.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-06-01 |