Definitions

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Etymologies

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Examples

  • Agricultural activities occur but the area has been less modified by this due mainly to the presence of the blackfly Simulium sp. which causes river blindness and has tended to discourage settlement and encroachment.

    Comoé National Park, Côte d'Ivoire

  • The disease, transmitted by black flies of the Simulium species whose bite can be extremely unpleasant, has in the past devastated local communities.

    ANC Daily News Briefing

  • As a secondary measure, the organisation was aiming to interrupt the disease's transmission by eliminating the black fly in a few isolated foci through the application of insecticides to the breeding sites of Simulium damnosum.

    ANC Daily News Briefing

  • The research, jointly conducted by the World Health Organisation and the Angolan government, revealed that the condition is caused by Onchocerca volvulus - a parasitic worm transmitted into human hosts by the black fly (Simulium damnosum) - and presenting various debilitating symptoms including serious visual impairment

    ANC Daily News Briefing

  • Simulium larvae are destroyed by application of selected insecticides through aerial spraying of breeding sites in fast-flowing rivers.

    Chapter 2

  • Microfilariae produced in one person are carried to another by the blackfly, which in West Africa belongs to the Simulium damnosum species complex.

    Chapter 2

  • Onchocerciasis or river blindness has a distribution both in Africa and Central and South America that is immediately linked to the preferred breeding conditions of the Simulium blackfly vector.

    Chapter 5

  • The larvae of the blackfly (Simulium damnosum spp.) live attached to a substrate in the fast flowing parts of rivers, where they filter out particles for their nutrition.

    Chapter 6

  • The Simulium, whose secondary host is the black fly, is common in all fast - flowing, unshaded streams.

    Chapter 7

  • Most remarkable, in many respects, of all aquatic larvae are the grubs of the Sand-midges (Simulium).

    The Life-Story of Insects

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