Mating does not affect the biting behaviour of Anopheles gambiae from the islands of São Tomé and Príncipe, West Africa

J. D. Charlwood, J. Pinto, C. A. Sousa, C. Ferreira, Vilfrido Gil, V. E. Do Rosário

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Abstract

To determine if mating or gonotrophic age influenced the biting behaviour of Anopheles gambiae s.s., a series of all-night landing captures was performed on the islands of São Tomé and Príncipe in the Gulf of Guinea. On São Tomé 49% and on Príncipe 56% of the newly emerged An. gambiae taking their first bloodmeal were virgins. On each island, with the exception of recently mated insects on Príncipe, all age-groups had similar biting cycles. The biting cycle on Príncipe resembled that observed on continental Africa, with a peak in the latter part of the night. Peak biting on São Tomé, however, occurred before midnight. Estimated daily survival rates were 0.77 and 0.29 for São Tomé and Príncipe, respectively. Mating does not affect the biting behaviour of An. gambiae on these islands.

Original languageEnglish
Pages (from-to)751-756
Number of pages6
JournalAnnals of Tropical Medicine and Parasitology
Volume97
Issue number7
DOIs
Publication statusPublished - Oct 2003

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