Diel feeding habits of juveniles of Mullus surmuletus "Linneo\ 0647# in the lagoon of the Stagnone di Marsala "Western Sicily\ Italy#
ثبت نشده
چکیده
Diet composition\ feeding rhythm\ gastric evacuation rate and daily ration were investigated in juvenile Mullus surmuletus "Linneo\ 0647#[ Fish were collected in the lagoon of the Stag! none di Marsala in western Sicily\ in July 0884\ during a 13 h sampling period[ Copepoda\ Polychaeta\ Amphipoda and Tanaidacea were shown to be the most frequent prey items[ The feeding index values showed two di}erent daily feeding times[ A unimodal trend in the daily rhythm of food con! sumption was derived\ with a peak in feeding between 0199 and 1999 h[ Gastric evacuation in juvenile M[ surmuletus is best described by an exponential model\ with a gastric evacuation rate R 9[55 g h "r 9[77# "T 13[342 9[53>C#[ The amount of food consumed daily\ calculated according to the Elliott and Persson model\ was 9[968 g\ equal to about 7) of the average dry weight of the _sh[
منابع مشابه
Microbial Safety of Black Summer Truffle Collected from Sicily and Umbria Regions, Italy
Background: Tuber aestivum Vittad., known as black summer truffle, represents high-value food especially used as garnishment in nouvelle cuisine. The aim of this study was to investigate on the viable microbial populations associated with T. aestivum ascomata collected in different sites of Sicily and one locality of Umbria (Italy). Methods: The ripe ascomata of black summer truffles were coll...
متن کاملSeed yield and oil quality of perennial castor bean in a Mediterranean environment
ewline"> Castor (Ricinus communis L.) is an oilseed species, which in southern Italy iscultivated as annual during the spring-summer period under irrigation, but in mosttemperate areas such as those of eastern coast of Sicily, it could be grown as semiperennial with no irrigation, by the adoption of autumnal sowings. A fieldexperiment was conducted in southeastern Sicily with the aim of assessi...
متن کاملChromosomal location polymorphism of major rDNA sites in two Mediterranean populations of the killifish Aphanius fasciatus (Pisces: Cyprinodontidae).
The chromosomes of the Mediterranean killifish, Aphanius fasciatus from two populations, the Lagoon of Venice (LV, 15 specimens) and the Lagoon "Stagnone di Marsala" (Sicily) (SM, 48 specimens), have been investigated using conventional Ag-staining and fluorescent in situ hybridization (FISH) with 18S rDNA probe. The two methods revealed variation in the number of major rDNA sites ranging from ...
متن کاملAggregation dynamics and foraging behaviour of striped red mullet Mullus surmuletus in the western Mediterranean Sea.
Habitat-related heterogeneity of striped red mullet Mullus surmuletus heterospecific foraging assemblages was examined off the coast of Spain. Video-based focal-follows conducted on 122 M. surmuletus assemblages (446 total individuals) revealed an array of attendant species (n = 7) with composition linked to benthic habitat complexity; bare sandy substrata were characterized by homospecific gro...
متن کاملFirst isolation of Mycobacterium spp. in Mullus spp. in Turkey
Ichthyozoonotic Mycobacterium spp. poses health risks both to fish and humans. In this study, the presence of ichthyozoonotic Mycobacterium spp. was investigated in red mullet (Mullus barbatus barbatus) and surmullet (Mullus surmuletus), widely caught species in the Mediterranean and the Aegean Sea. A total of 208 fish samples, provided from fishermen of Mersin province (Turkey) were studied. U...
متن کامل