The aim of this study was to compare the organismal responses farmed and wild-caught turbot, Scophthalmus maximus, based on analyses biochemical plasma parameters, leukocyte profile, histological tissue profile gills, kidney, liver, intestine, spleen, as well gene expression stress proteins in kidney liver tissue. results revealed significant differences triglycerides (TRIG), total protein (TP)...

A total of 180 individuals of Scardinius erythrophthalmus from Srebarna Lake, north-east Bulgaria, were examined for helminth parasites during spring, summer and autumn of 2005-2006 (30 specimens per season). Helminth parasites were recorded in 166 individuals (92.2%). Ten helminth species were found: trematodes--metacercariae of Posthodiplostomum cuticola, Diplostomum chromatophorum and D. spa...

The unique head morphology of sphyrnid sharks might have evolved to enhance electrosensory capabilities. The 'enhanced electroreception' hypothesis was tested by comparing the behavioral responses of similarly sized carcharhinid and sphyrnid sharks to prey-simulating electric stimuli. Juvenile scalloped hammerhead sharks Sphyrna lewini and sandbar sharks Carcharhinus plumbeus oriented to dipole...

Kinematics and critical swimming speed (Ucrit) of juvenile scalloped hammerhead sharks Sphyrna lewini were measured in a Brett-type flume (635 l). Kinematic parameters were also measured in sharks swimming in a large pond for comparison with those of sharks swimming in the flume. Sharks in the flume exhibited a mean Ucrit of 65±11 cm s-1 (± s.d.) or 1.17±0.21 body lengths p...

Evidence for severe declines in large predatory fishes is increasing around the world. Because of its long history of intense fishing, the Mediterranean Sea offers a unique perspective on fish population declines over historical timescales. We used a diverse set of records dating back to the early 19th and mid 20th century to reconstruct long-term population trends of large predatory sharks in ...

in this study, a total of 146 specimen of fish species from garmrood river of amol, mazandaran province in the summer 2011 were caught by local fishermen which including ,10 sand goby (neogobius fluviatilis),4 round goby (neogobius melanostomus), 48 capoeta capoeta, 73 albernoides bipunctatus, 5 leuciscus cephalus, 7 cobitis taenia and 4 nemacheilus nemacheilus. the fishes were transported a li...