Gastro-intestinal helminths of domestic dogs in the Republic of South Africa

Of the gastro-intestinal helminths found in 1 063 dogs from different parts of the country, Dipylidium caninum, the most prevalent cestode, occurred in 19,7% of the animals. Echinococcus granulosus was present in 10 dogs, 8 of which were from urban areas, and Taenia hydatigena in 69 dogs. Taenia multiceps was recovered from dogs only in the Cape Province and the Orange Free State. Toxocara canis was present in 81 of the necropsies carried out on 253 dogs from the Pretoria municipal area, while Ancylostoma spp. were present in 175 dogs. In the Pretoria area Ancylostoma caninum (11,9%) was more prevalent than Ancylostoma braziliense (6,2%).This article has been scanned in colour with a HP Scanjet 5590; 300dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-Format

The golden hamster as a definitive host of Taenia solium and Taenia saginata

The susceptibility of golden hamsters to infestation with Taenia solium is increased by treatment with antilymphocytic scrum (ALS) or whole body irradiation or chemical immunosuppressants, viz. methylprednisolone acetate and betamethazone disodium phosphate. Although the worms develop to sexual maturity they do not produce eggs. Such treatment is less effective in increasing their susceptibility to T. saginata. When young hamsters were exposed to whole body irradiation and subsequently treated with ALS, 60 per cent of them became infested with T. saginata. As young animals do not survive immunosuppression for any length of time the further development of this tapeworm was not investigated.The articles have been scanned in colour with a HP Scanjet 5590; 300dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format

The incidence of hydatidosis in the Republic of South Africa

Hydatidosis occurs in all the areas of the Republic that were covered by this survey. In the country as a whole the average incidence is approximately 1 per cent in all species of slaughter stock. The incidence varies in the different regions and in different species of livestock in the same region. In cattle it is high in the Eastern Province and the Transvaal Bushveld, in sheep at Welkom and Vryburg, in pigs in the Western Province and at Potgietersrus. The incidence in cattle increases with the age of the animals. The majority of the centres recorded an incidence of below 1 per cent in both sheep and pigs, but only 30 per cent of the centres recorded a similar low incidence in cattle. The domestic dog is an important disseminator of hydatidosis but wild carnivores, particularly the black-backed jackal, are also sources of infestation in certain areas. Farming practices tending to increase contact between the domestic dog and livestock, tend to increase the incidence of hydatidosis.The journals have been scanned in colour with a HP 5590 scanner; 600 dpi. Adobe Acrobat v.11 was used to OCR the text and also for the merging and conversion to the final presentation PDF-format

Taenia multiceps larva from a gemsbok

Round (1968) records polycephalic cestode larvae (Coenurus) from various African mammals in Zoological gardens, viz. Alcelaphus sp., Capra ibex Linnaeus, 1758, Hippotragus equinus (Desmarest, 1804), Sylvicapragrimmia (Linnaeus, 1758). In the last eight years, however, similar larvae have been recovered from four free-living gemsbok, Oryx gazella (Linnaeus, 1758), in South West Africa (Verster, unpublished data). Because polycephalic larvae from intramuscular and subcutaneous tissues of ruminants have been assigned to either Taenia multiceps Leske, 1780 or to Taenia gaigeri (Hall, 1916), an available larva from one of these gemsbok was fed to a domestic dog to establish the identity of the resulting adult.The articles have been scanned in colour with a HP Scanjet 5590;300dpi. adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format

Bovine skin lesions of possible filarial origin associated with heavy hornfly infestations (Haematobia meridiana)

Circumscribed, ulcerative skin lesions, usually situated caudal to the scapula, affected cattle in the Republic of Venda during the summer of 1981-82. The occurrence of the lesions was associated with heavy infestations of the hornfly, Haematobia meridiana. Microscopically the lesions were characterized by intense eosinophilic dermatitis. Microfilariae were seen in histological sections of one lesion, but a species identification could not be made. The possible cause of the lesions is discussed.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format

Occurrence of Taenia solium in a Cape fur seal (Arctocephalus pusillus)

The larval stage of Taenia solium was recovered from the brain, skeletal muscles, heart, lungs and liver of a Cape fur seal collected near Cape Town. This is apparently the second record of the larval stage of this cestode in a marine mammal.The articles have been scanned in colour with a HP Scanjet 5590; 300dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format

Efficient Applications in User Transparent Parallel Image Processing

Although many image processing applications are ideally suited for parallel implementation, most researchers in imaging do not benefit from high performance computing on a daily basis. Essentially, this is due to the fact that no parallelization tools exist that truly match the image processing researcher's frame of reference. As it is unrealistic to expect imaging researchers to become experts in parallel computing, tools must be provided to allow them to develop high performance applications in a highly familiar manner. In an attempt to provide such a tool, we have designed a software architecture that allows transparent (i.e., sequential) implementation of data parallel imaging applications for execution on homogeneous distributed memory MIMDstyle multicomputers. This paper gives an assessment of the architecture's effectiveness in providing significant performance gains. In particular, we describe the implementation and automatic parallelization of three well-known example applications that contain many fundamental imaging operations: (1) template matching, (2) multi-baseline stereo vision, and (3) line detection. Based on experimental results we conclude that our architecture constitutes a powerful and user-friendly tool for obtaining high performance in many important image processing research areas