Fish trapping during the operation of the Durban harbour graving dock, South Africa

The species composition and abundance of fishes trapped on the grids covering the drainage outlets in the Durban harbour graving dock were investigated over a 12 month period. Fifty-three species of fish and several invertebrates, including the crabs Scyllaserrata and Portunus pelagicus, prawns Penaeus spp. and crayfish Palinurus spp., were caught on the grids. Shoaling fishes of the families Clupeidae and Mugilidae were numerically dominant with Haemulidae, Sparidae and Monodactylidae other major components. The economic value of the captured fishes to dockyard workers and possible mechanisms to reduce catches are discussed

Microorganisms in the aetiology of atherosclerosis.

Recent publications have suggested that infective pathogens might play an important role in the pathogenesis of atherosclerosis. This review focuses on these microorganisms in the process of atherosclerosis. The results of in vitro studies, animal studies, tissue studies, and serological studies will be summarised, followed by an overall conclusion concerning the strength of the association of the microorganism with the pathogenesis of atherosclerosis. The role of the bacteria Chlamydia pneumoniae and Helicobacter pylori, and the viruses human immunodeficiency virus, coxsackie B virus, cytomegalovirus, Epstein-Barr virus, herpes simplex virus, and measles virus will be discusse