Swarming behaviour in natural populations of Anopheles gambiae and "An. coluzzii#: Review of 4 years survey in rural areas of sympatry, Burkina Faso (West Africa)

Sawadogo P., Namountougou Moussa, Toé K.H., Rouamba J., Maïga H., Ouédraogo K.R., Baldet Thierry, Gouagna Louis-Clément, Kengne Pierre, Simard Frédéric, Costantini Carlo, Gibson G., Diabaté Abdoulaye, Lees R.S., Gilles J., Dabiré K.R.. 2014. Swarming behaviour in natural populations of Anopheles gambiae and "An. coluzzii#: Review of 4 years survey in rural areas of sympatry, Burkina Faso (West Africa). Acta Tropica, 132, suppl., S42-S52

https://doi.org/10.1016/j.actatropica.2013.12.011

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Quartile : Q2, Sujet : TROPICAL MEDICINE / Quartile : Q2, Sujet : PARASITOLOGY

Résumé : The swarming behaviour of natural populations of Anopheles gambiae and An. coluzzii (formerly known as An. gambiae S and M forms, respectively) were investigated through longitudinal surveys conducted between July 2006 and October 2009 in two rural areas of south-western Burkina Faso where these forms are sympatric. In both sites, the majority of swarms were recorded above visual markers localised among houses. In Soumousso, a wooded area of savannah, 108 pairs caught in copula from 205 swarms were sampled; in VK7, a rice growing area, 491 couples from 250 swarms were sampled. If segregated swarms were the norm in both sites, many visual markers were shared by the two forms of An. gambiae. Furthermore, mixed swarms were collected annually in frequencies varying from one site to another, though no mixed inseminations were recorded, corroborating the low hybrid rate previously reported in the field. The occurrence of inter-specific mate-recognition mechanisms, which allow individuals to avoid hybridisation, is discussed.

Mots-clés Agrovoc : Anopheles, Anopheles gambiae, comportement sexuel, accouplement, essaimage, dynamique des populations

Mots-clés géographiques Agrovoc : Burkina Faso

Mots-clés complémentaires : Anopheles coluzzii

Classification Agris : L72 - Organismes nuisibles des animaux
L73 - Maladies des animaux

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

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