METHODS FOR POPULATION SAMPLING OF IMMATURE STAGES OF SIMULIUM-DAMNOSUM-THEOBALD-1903 (DIPTERA-SIMULIIDAE) IN WEST-AFRICA .1. PRELIMINARY-OBSERVATIONS ON VERTICAL DISTRIBUTION OF LARVAE AND PUPAE

  • 1 January 1977
    • journal article
    • research article
    • Vol. 28  (1) , 91-96
Abstract
Three techniques for sampling larvae of S. damnosum in different water depths are described. Preliminary results show that the larvae can settle much deeper, i.e., up to 3 m, than previously reported (0-30 cm). Pupation takes place without impairment at any depth.

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