For the first time, Emetha audouini (Milne Edwards, 1840), a cymothoid isopod, is reported parasitising cage cultured sea bass Dicentrarchus labrax L., 1758 in Greece. The specimens observed are larvae (Pulli II). They were found in great numbers in the buccal and branchial cavity of young (3.5 m.o. old) sea bass, in an intensive cage farm facility. This parasite is certainly transferred to sea...

Hermaphroditism is taxonomically widespread among teleost fishes and takes on many forms including simultaneous, protogynous, and protandrous hermaphroditism, bidirectional sex change, and androdioecy. The proximate mechanisms that influence the timing, incidence, and forms of hermaphroditism in fishes are supported by numerous theoretical and empirical studies on their mating systems and sexua...

Concentrations of cadmium, cobalt, cupper, iron, manganese and nickel were determined in four organs (liver, gills, ovaries muscles) Acanthopagrus latus, which belong to family Sparidae collected from Al- Razazah Lake. Heavy metals have been by means Atomic Absorption Spectrophotometry. The fish average weight was 378 g the length 215 mm. Iron showed highest value (1029.114 μg/g dry weight), wh...

The environment of Al-Jibsa Marsh is a suitable for the growth and reproduction types fish, as (13) species bony fish that have been identified, which belong to (6) families, most important are carp family (Sparidae), Bayah (Mugilidae), jerry (Bagridae) (Mastacemblidae). Some these reside in marsh environment, others migratory, some resident, intruders environment. Concentrations (7) heavy elem...

Distribution and capture Th e gilthead seabream, Sparus aurata, is a subtropical Sparidae distributed from 62°N 15°N, 17°W 43°E. It occurs naturally in the Mediterranean and the Black Sea (rare), and in the Eastern Atlantic, from the British Isles, Strait of Gibraltar to Cape Verde and around the Canary Islands (1). Gilthead sea bream are captured with traditional and sporting equipment, and so...

The family sparidae is represented in Pakistan by 14 species belonging to eight genera: the genus Acanthopagrus with four species, A. berda, A. arabicus, A. sheim, and A. catenula; Rhabdosargus, Sparidentex and Diplodus are each represented by two species, R. sarba and R. haffara, Sparidentex hasta and S. jamalensis, and Diplodus capensis and D. omanensis, and the remaining four genera are repr...

Matthiessen's ratio (distance from centre of lens to retina:lens radius) was measured in developing black bream, Acanthopagrus butcheri (Sparidae, Teleostei). The value decreased over the first 10 days post-hatch from 3.6 to 2.3 along the nasal and from four to 2.6 along temporal axis. Coincidentally, there was a decrease in the focal ratio of the lens (focal length:lens radius). Morphologicall...

The evolution and determinants of host specificity in Lamellodiscus species (Monogenea, Diplectanidae) were investigated. The 20 known Mediterranean species were studied, all parasites of fishes from the family Sparidae (Teleostei). An index of specificity, which takes into account the phylogenetic relationships of their fish host species, was defined. The link between specificity and its poten...