Betina Clausen

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Blood samples were taken from 39 black rhinoceros (Diceros bicornis), usually soon after they were captured. The blood was examined microscopically for trypanosomes, and most samples were tested for trypanosome serum antibodies and inoculated into small laboratory animals. Serum antibodies were found in most animals and trypanosomes identified as(More)
A bacteriological survey was carried out on 30 black rhinoceros (Diceros bicornis) of which 23 were newly captured and seven were captive. A beta haemolytic Streptococcus, group L was found in skin lesions and various wounds, causing septicaemia and death in two animals. Staphylococcus aureus was found in 3 rhinoceros, and caused the death of one. The(More)
Colibacillosis with polyarthritis, due to E. coli O-group 55, has been found to be responsible for a high summer mortality among caribou valves in West Greenland. The mortality is presumably consequential on overstocking and therefore likely to subside as the caribou population in the preferred habitats is reduced to a lower density--the optimum level of(More)
Blood samples were collected from 23 free-ranging African elephants(Loxodonta africana) in Tanzania. Red and white blood cell counts, white blood cell differential, hemoglobin, blood copper, and blood inorganic phosphate were determined. No correlation of any of these measurements with age and sex was discernible, except that the total white count was(More)
Due to previous findings of increased concentrations of the rodenticid, thallium, in free-living Danish carnivores, thallium analysis has been carried out on material from 77 owls and birds of prey. Thallium was found in 2/3 of the birds and in 10% the concentration was so high that the load of thallium may have caused the death of the birds. The load of(More)
Stained imprints made from autopsy lung biopsies from hares, foxes, badgers, stone martens, one hedgehog, roe deer from Denmark and from caribou from Greenland were examined microscopically for Pneumocystis carinii. Pneumocysts were found in the lungs of 3 out of 28 hares, 3 out of 18 foxes and 1 out of 6 roe deer. This is the first report of Pneumocystis(More)
In July 1982 and 1983, 491 muskoxen were handled in a tagging project in Jameson Land, northeastern Greenland. Groups of muskoxen as well as single individuals were rounded up effectively by Greenland huskies and kept in an accessible position suitable for injection of immobilizing drugs. Standard doses of drugs were developed for each age class. For adults(More)