[Health status and causes of mortality in feral cats in a delimited area of the inner city of Berlin]. / Gesundheitsstatus und Mortalitätsursachen verwilderter Hauskatzen in einem Untersuchungsgebiet in Berlin-Mitte.

Results of the veterinary examination of feral cats living in a delimited area of Berlin city are presented. Between 1996 and 1999 thirty nine cats were investigated, among them eleven individuals twice. All animals were positive for one or several pathologies, but only seven cats were in bad condition. Most common were periodontal and gingival diseases, followed by conjunctivitis. Five cats were positive for FIV, seven for FeLV, one tomcat for both. Twenty six cats vanished during the study period of 42 months, only one third of cats survived and remained in the study area throughout. Four cats were given to pet lovers, nine cats disappeared without trace, seven animals died in traffic accidents and six cats died of illnesses. Cats less than three years of age vanished more often than expected from their representation in the population. Dirty or large feeding places for cats constitute a source of infections. Feeding sites should be accessible to only few individuals and left-overs that may attract stray cats, rats or birds should not remain at feeding places.

[A case of Echinococcus granulosus hydatid cyst in a zoo born dromedary in the Berlin-Fridrichsfelde zoo]. / Echinococcus granulosus-Hydatidenbefall bei einem zoogeborenen Dromedar im Tierpark Berlin-Friedrichsfelde.

In Germany, the threat to human health by the small fox tapeworm (Echinococcus multilocularis) has been increasingly discussed in the last few years. On the other hand, the hydatid worm of the dog (Echinococcus granulosus) became more and more rare in Germany and was often declared to be eradicated. This paper presents a case of hydatid infection of the lung in an adult dromedary (Camelus dromedarius), which was born and kept all its life at Tierpark Berlin-Friedrichsfelde. Questions connected with E. granulosus infection are discussed from an ecological point of view: history, urbanisation, biology, clinical signs, potential threat to man, prophylaxis and treatment. In view of the extensive and sometimes uncontrolled dog keeping in urban households it must be stressed that careful documentation and surveillance of this life-threatening zoonosis, which was the main reason for its decline in the past, has not yet lost its importance.

[Utilization of CT image data for preparation of thermoradiotherapy]. / Nutzung von CT-Bilddaten zur Vorbereitung der Thermoradiotherapie.

Medical imaging procedures are providing qualitative and, increasingly, quantitative diagnostic information on the morphology and function of the human organism. As possibilities for communication and data processing continue to grow, they are also being applied in the field of therapy. Taking combined local radiotherapy and thermotherapy for the treatment of uterine carcinoma as an example, this paper describes the integration of the biological-pathological situation into the modelling of isothermal profiles using the patient's image data.

[Proteocephalus exiguus (Cestoda) as a parasite of Salmo gairdneri (Pisces)]. / Proteocephalus exiguus (Cestoda) als Parasit von Salmo gairdneri (Pisces).

Proteocephalus exiguus (Cestoda) as a parasite of Salmo gairdneri (Pisces). The cestode species Proteocephalus exiguus LA RUE, 1911, not found in Salmo gairdneri until now, is recorded from this host for the first time in the G.D.R. This species is described in detail and differentiated from P. neglectus. In addition to a list of findings from the lake Wolziger See in the south of Berlin, data on the incidence (up to 100% in our material) and the intensity of invasion (up to 40 helminths per fish) as well as on pathogenicity and therapy are given. Problems of species determination in the genus Proteocephalus, especially from Salmonidae and Coregonidae, and the distribution and bionomy of P. exiguus are discussed.

[Life cycle of Proteocephalus neglectus (Cestoda) from rainbow trout Salmo gairdneri]. / Zum Lebenszyklus von Proteocephalus neglectus (Cestoda) aus Regenbogenforellen Salmo gairdneri.

Proteocephalus neglectus is described for the first time in the G.D.R. from Salmo gairdneri. The incidence of invasion was 65% and the main intensity was 2.8 with a maximum of 6 worms per fish. P. neglectus has a 2-host life-cycle. Copepods of the Cyclops strenuus-group and Cyclops furcifer were used as experimental intermediate hosts. The ontogenetic stages oncosphaera (free-living first larva), cercoscolex (second larva in the copepod haemocoel) and preadult (in the gut lumen of the definitive host) were described and compared with other proteocephalid life-cycles. When copepods invaded by oncosphaeres and captured at 14-15 degrees C were eaten by the trouts after 21 days the invasion of the definitive host took place. Parallel tests with Perca fluviatilis were not successful. A transfer of the preadult worms from trout to trout was possible. Some problems of species determination and of terminology were discussed.