Black fly eggs, light micrograph

Black fly eggs, light micrograph

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Credit: SINCLAIR STAMMERS/SCIENCE PHOTO LIBRARY

Caption: Black fly eggs, light micrograph. This small fly (Simulium damnosum) spreads river blindness. It reproduces by laying eggs in fast-flowing river water, hence the common name for the disease. Each egg hatches out a larva that eventually forms a pupa and the winged adult fly emerges 8-12 days after the eggs are laid. The adult fly spreads the microscopic filarial stage of the parasitic worm that causes river blindness. The adult parasitic worms live in humans, producing the microfilariae that blind people. S. damnosum is found in Western Africa. These eggs are from Ghana. Phase contrast. Magnification unknown.

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Keywords: africa, african, animal, aquatic, black, condition, disease, disorder, egg, eggs, filariasis, fly, ghana, ghanian, gnat, healthcare, insect, insecta, invertebrate, invertebrates, life cycle, light micrograph, lm, many, medical, medicine, multiple, nature, onchocerciasis, optical, phase contrast, reproducing, reproduction, reproductive, river blindness, simulium damnosum, slide, transmission, underwater, vector, water, wildlife, zoology

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