Black fly pupae

Numéro d’image : 11908592
Black fly pupae
Black fly pupae underwater. Black flies (Simulium damnosum) are small flies that spread the disease river blindness. Black flies reproduce by laying eggs in the waters of fast-flowing rivers,hence the common name for the disease. Each egg hatches out a larva that eventually forms a pupa. The winged adult fly will emerge from each pupa,make its way to the surface and fly off,emerging 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 worm lives in humans,producing the microfilariae that blind people. This fly is found in Western Africa. Photographed in Ghana
Licence : Droits gérés
Crédit: Science Photo Library / Stammers, Sinclair
Taille de l’image : 4792 px × 3707 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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