ABSTRACT
A total of 228 salmonids (90 Oncorhynchus mykiss, 48 Oncorhynchus kisutch, and 90 Salmo salar) from 8 intensive aquaculture centers in the south of Chile were examined for endohelminths parasites between December 2008 and May 2009. The body cavities of 2 O. mykiss were infected by Diphyllobothrium sp. plerocercoids (prevalence: 6.7%, mean intensity: 1.0, mean abundance: 0.07) from the Lake Tarahuin hatchery on the south of Chiloé Island. Also, tetraphyllidean plerocercoids (prevalence: 3.3%, mean intensity: 1, mean abundance: 0.03) and fourth-stage larvae of Hysterothylacium aduncum (prevalence: 6.7%, mean intensity: 1, mean abundance 0.07) were observed in O. kisutch from a marine hatchery in Chiloé. The occurrences of Diphyllobothrium sp. in a lake and a tetraphyllidean plerocercoid from marine cultured salmonid in Chiloé are reported for first time. No muscular infection by helminths was recorded in the fish examined.
Subject(s)
Fish Diseases/parasitology , Fisheries , Helminthiasis, Animal/parasitology , Salmonidae/parasitology , Animals , Ascaridida Infections/epidemiology , Ascaridida Infections/parasitology , Ascaridida Infections/veterinary , Ascaridoidea/isolation & purification , Cestoda/isolation & purification , Cestode Infections/epidemiology , Cestode Infections/parasitology , Cestode Infections/veterinary , Chile/epidemiology , Diphyllobothriasis/epidemiology , Diphyllobothriasis/parasitology , Diphyllobothriasis/veterinary , Diphyllobothrium/isolation & purification , Fish Diseases/epidemiology , Fresh Water , Helminthiasis, Animal/epidemiology , Oncorhynchus kisutch/parasitology , Oncorhynchus mykiss/parasitology , Prevalence , Salmo salar/parasitology , Viscera/parasitologyABSTRACT
In 1985 and 1986 the Department of Neurosurgery of the University of Berlin treated two cases of arachnoid cysts of third ventricle, both of which were successfully dealt with surgically. They are reported in this paper. Arachnoid cysts from ventricular system and cisterns are rare. Up to now 46 cases have been reported in the specialized literature. The computerized tomography and magnetic resonance make diagnosis easier, as shown through the cases reported.