Sexually dimorphic head shape is common in vertebrates from teleosts to mammals. Herein we document that cephalic sexual dimorphism is also found in the cartilaginous fishes (Chondrichthyes). Male bonnethead sharks develop a prominent bulge along the anterior margin of the cephalofoil at the onset of sexual maturity. This contrasts with the uniformly rounded anterior margin of adult females and...

Abstract A total of 958 specimens farmed common carp Cyprinus carpio from eight the most significant and largest cyprinid aquaculture facilities in Macedonia (pond cage culture systems) were examined for parasitological investigation three years. The following parasite species genus Dactylogyrus identified: extensus, minutus anchoratus . highest prevalence was determined D. extensus (38.8%), fo...

Seawater ornamental fish is an Indonesian fauna whose are very diverse and easily infested with parasite. Therefore, the quarantine procedures was necessary to prevent spread of parasitic disease. The purpose this study examine identication parasites in marine before transported from Fish Quarantine, Quality Control Safety Fishery Products Denpasar, Bali. Parasite examination carried out by con...

Previous investigations of the population genetics of the scalloped hammerhead sharks (Sphyrna lewini) in the Eastern Tropical Pacific have lacked information about nursery areas. Such areas are key to promoting conservation initiatives that can protect young sharks from threats such as overfishing. Here, we investigated the genetic diversity, phylogeography, and connectivity of S. lewini found...

  For this study one species of Shyrnidae family caught along Persian Gulf in Bandarabbas city. Sphyrna lewini were transferred to the laboratory on spring 2007. The antimutagenic activity of the Methanolic and Chloroforamic extracts of muscle, liver and cartilage of Sphyrna lewini with the Ames test was investigated. The use of antimutagens and anticarcinogens in everyday life is the most effe...