Horizon / Plein textes La base de ressources documentaires de l'IRD

IRD

 

Publications des scientifiques de l'IRD

Sawadogo S. P., Costantini Carlo, Pennetier Cédric, Diabaté A., Gibson G., Dabiré R. K. (2013). Differences in timing of mating swarms in sympatric populations of Anopheles coluzzii and Anopheles gambiae s.s. (formerly An. gambiae M and S molecular forms) in Burkina Faso, West Africa. Parasites and Vectors, 6, 275. ISSN 1756-3305

Fichier PDF disponiblehttp://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers17-10/010061196.pdf[ PDF Link ]

Lien direct chez l'éditeur doi:10.1186/1756-3305-6-275

Titre
Differences in timing of mating swarms in sympatric populations of Anopheles coluzzii and Anopheles gambiae s.s. (formerly An. gambiae M and S molecular forms) in Burkina Faso, West Africa
Année de publication2013
Type de documentArticle référencé dans le Web of Science WOS:000325639300001
AuteursSawadogo S. P., Costantini Carlo, Pennetier Cédric, Diabaté A., Gibson G., Dabiré R. K.
SourceParasites and Vectors, 2013, 6, p. 275. p. 275 ISSN 1756-3305
RésuméBackground: The M and S molecular forms of Anopheles gambiae s.s. Giles appear to have speciated in West Africa and the M form is now formally named An. coluzzii Coetzee & Wilkerson sp.n. and the S form retains the nominotypical name (abbreviated here to An. gambiae). Reproductive isolation is thought to be the main barrier to hybridisation; even though both species are found in the same mating swarms, hybrid fertilisations in copulae have not been found in the study area. The aim of the study, therefore, was to determine whether differences in circadian and/or environmental control over the timing of swarming in the two species contribute to reproductive isolation. Methods: The timing of male swarming in these species was recorded four nights per month over four years at five swarming sites in each of two villages. The timing of the start and end of swarming, and the concurrent environmental parameters, temperature, humidity and light intensity, were recorded for n = 20 swarms/month/species. The timing of 'spontaneous' activity at dusk of individual An. coluzzii and An. gambiae males was video-recorded in an actograph outdoors for 21 nights. Results: Of the environmental parameters considered, swarming was most strongly correlated with sunset (r(2) > 0.946). Anopheles gambiae started and stopped swarming earlier than An. coluzzii (3:35 +/- 0:68 min:sec and 4:51 +/- 1:21, respectively), and the mean duration of swarming was 23:37 +/- 0:33 for An. gambiae and 21:39 +/- 0:33 for An. coluzzii. Accordingly, in principle, whenever both species swarm over the same marker, a mean of 15.3 +/- 3.1% of An. gambiae swarming would occur before An. coluzzii males arrived, and 19.5 +/- 4.55% of An. coluzzii swarming would occurred after An. gambiae males had stopped swarming. These results are consistent with the finding that An. gambiae males became active in the actograph 09:35 +/- 00:22 min:sec earlier than An. coluzzii males. Conclusions: The timing of swarming and spontaneous activity at dusk are primarily under circadian control, with the phase linked closely to sunset throughout the year. The mating activity of these two species is temporally segregated for 15-20% of the swarming period, which may contribute to the observed reproductive isolation of these species in local sympatric populations.
Plan de classementEntomologie médicale / Parasitologie / Virologie [052]
Descr. géo.BURKINA FASO
LocalisationFonds IRD [F B010061196]
Identifiant IRDfdi:010061196
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010061196

Export des données

Disponibilité des documents

Télechargment fichier PDF téléchargeable

Lien sur le Web lien chez l'éditeur

Accès réservé en accès réservé

HAL en libre accès sur HAL


* PDF Link :

    à télécharger pour citer/partager ce document sur les réseaux sociaux académiques


Accès aux documents originaux :

Le FDI est labellisé CollEx

Accès direct

Bureau du chercheur

Site de la documentation

Espace intranet IST (accès réservé)

Suivi des publications IRD (accès réservé)

Mentions légales

Services Horizon

Poser une question

Consulter l'aide en ligne

Déposer une publication (accès réservé)

S'abonner au flux RSS

Voir les tableaux chronologiques et thématiques

Centres de documentation

Bondy

Montpellier (centre IRD)

Montpellier (MSE)

Cayenne

Nouméa

Papeete

Abidjan

Dakar

Niamey

Ouagadougou

Tunis

La Paz

Quito