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ABSTRACT COLLECTIONS of mosquitoes have been made regularly throughout the dry season in the desert west of Omdurman, Sudan, by means of pyrethrum-spraying, well-traps and hand catching. The
results indicate that adult female _Anopheles gambiae_ (sp. B ?) Giles survive throughout the dry season, but with a change in their physiology and behaviour. The insects were found to hide
in dwelling huts (87.7 per cent), in cracks down dry wells (8.5 per cent), in disused or ruined houses (3.2 per cent) and in rabbit and rodent burrows (0.5 per cent). Dissection showed that
77.1 per cent of the nulliparous females captured were engorged with blood. Of these, 90.6 per cent contained human blood. The ovaries evidently undergo only one gonotrophic cycle during
the dry season, developing extremely slowly so that, when the rains come, the gravid females are ready to oviposit. These mosquitoes are apparently unable to lay eggs during the dry season.
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SPOROZOITES DURING A BLOOD MEAL Article Open access 14 November 2022 AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Department of Zoology, University of Khartoum, SALAH M. OMER & J. L.
CLOUDSLEY-THOMPSON Authors * SALAH M. OMER View author publications You can also search for this author inPubMed Google Scholar * J. L. CLOUDSLEY-THOMPSON View author publications You can
also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE OMER, S., CLOUDSLEY-THOMPSON, J. Dry Season Biology
of _Anopheles gambiae_ Giles in the Sudan. _Nature_ 217, 879–880 (1968). https://doi.org/10.1038/217879b0 Download citation * Received: 06 February 1968 * Issue Date: 02 March 1968 * DOI:
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