Analyse cytogénétique du complexe  Anopheles gambiae dans un village  du Sud-Est du Burkina-Faso

Petrarca, V.; Coriat, Pierre; Zoulani, A.; Cóluzzi, M.

doi:10.1051/gse:19900202

Cited by 5 publications

(9 citation statements)

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“…gambiae was around 40%, confirming results of previous studies carried out in the same site more than 20 years ago. 28 These authors suggested that such a low HBI for an anthropophagic species, such as An. gambiae , was probably a result of the generalized use of bed nets throughout the year, coupled with the greater availability of alternative hosts such as cattle.…”

Section: Discussionmentioning

confidence: 99%

“…The same authors argued that, in this area, the HBI varied in relation to the seasonal abundance of nuisance mosquitoes: the HBI was lower when mosquito densities were higher, indicating that humans were less accessible, presumably because of better protection, when nuisance was greater. 28 Because we measured the HBI in the dry season, when mosquito densities are lower, from samples that are bound to return a higher than average proportion of feeds off humans, it can be expected that our estimates of HBI represent figures that are nearer the ceiling HBI for An. gambiae in this area.…”

Section: Discussionmentioning

confidence: 99%

“…gambiae in a rice growing area of Burkina Faso, where the availability of human hosts is relatively poor because of the widespread and generalized use of (mostly non-impregnated) bed nets for > 30 years. 28 More specifically, we addressed the following questions. First, can restricted access to humans divert a strongly anthropophagic mosquito such as An.…”

Section: Introductionmentioning

confidence: 99%

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Beyond Nature and Nurture: Phenotypic Plasticity in Blood-Feeding Behavior of Anopheles gambiae s.s. When Humans Are Not Readily Accessible

Lefèvre¹,

Gouagna²,

Dabiré³

et al. 2009

The American Journal of Tropical Medicine and Hygiene

130

115

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Beyond Nature and Nurture: Phenotypic Plasticity in Blood-Feeding Behavior of Anopheles gambiae s.s. When Humans Are Not Readily Accessible

Lefèvre¹,

Gouagna²,

Dabiré³

et al. 2009

The American Journal of Tropical Medicine and Hygiene

130

115

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“…The study was conducted in four health centres (one urban and three rural) in Houet Province (Region of BoboDioulasso) situated at 365 km from Ouagadougou, the (Robert et al 1988) although around rice field areas it can be perennial with seasonal peaks. In 1999-2000, the number of infected bites/man/year (entomological inoculation rate, EIR) was estimated to be about 60 in the town of Bobo Dioulasso, 20 in dry areas such as Toussiana and 200-500 in marshy areas or rice fields (Léna and Bama) (T. Baldet, personal communication).…”

Section: Study Areamentioning

confidence: 99%

Chloroquine and sulphadoxine‐pyrimethamine efficacy for uncomplicated malaria treatment and haematological recovery in children in Bobo‐Dioulasso, Burkina Faso during a 3‐year period 1998–2000

Tinto

Zoungrana

Coulibaly

et al. 2002

Tropical Med Int Health

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SummaryWe determined the parasitological resistance and the clinical failure to chloroquine (CQ) and sulphadoxine-pyrimethamine (SP) by the WHO 14-day in vivo test over three consecutive years in 948 children aged 6-59 months with uncomplicated malaria attending four health centres in the province of Houet, Burkina Faso. Children were alternatively allocated to either CQ or SP. Packed cell volume (PCV) was measured at days 0 and 14. Parasitological resistance (RI, RII and RIII) to CQ was 18% (83 of 455) and to SP <1% (two of 308). Clinical failure with CQ was 12% (53 of 455) with no evidence of increase over time. Only one case of clinical failure was detected among the children treated with SP. The prevalence of anaemia (PCV <25%) was about 40% at day 0 and had decreased substantially by day 14 in both groups. However, in children treated with SP the prevalence of anaemia at day 14 was significantly lower than in those treated with CQ:RR ¼ 3.15 (95% CI: 1.33-7.42, P ¼ 0.008). CQ and SP are still efficacious for the treatment of uncomplicated malaria in children, at least in this area of Burkina Faso. However, the prevalences of CQ resistance reported from other areas of the country are worrying because of its potential spread. Regular surveillance of resistance to commonly used antimalarial drugs should continue.

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“…Trape, observation personelle). Par rapport aux deux autres villages, Kotiokh a présenté un taux de parturité inférieur et une densité nettement supérieure; cette association a déjà été observée au Burundi et au Burkina Faso (Coosemans 1985;Robert et al 1991) mais reste largement inexpliquée. Dans ce village de Kotiokh par rapport aux deux autres villages, il est à noter que le plus faible taux de parturité et le plus fort indice d'anthropophilie semblent se neutraliser mutuellement, permettant ainsi à l'indice sporozoïtique d'avoir été comparable.…”

Section: L'indice Sporozoïtiqueunclassified

La transmission du paludisme dans la zone de Niakhar, Sénégal

Robert¹,

Dieng

Lochouarn³

et al. 1998

Tropical Med Int Health

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La bio‐écologie des anophèles et la transmission du paludisme ont étéétudiées de janvier à décembre 1995 dans trois villages de la zone rurale sahélienne de Niakhar, au Sénégal. Cette zone de 29.000 personnes est depuis plusieurs décennies un observatoire régional de la population et de la santé. La collecte des moustiques a été pratiquées selon trois méthodes: la récolte des larves, la capture nocturne des moustiques femelles agressifs pour l'homme, et la capture au pyrèthre des moustiques au repos l'après‐midi dans les maisons. Les anophèles capturés ont été par ordre d'importance numérique: Anopheles arabiensis, An. rufipes, An. gambiae, An. pharoensis, An. funestus et An. coustani. Au sein du complexe An. gambiae, An. arabiensis a représenté 97% des femelles capturées sur homme et 98% des femelles semigravides capturées au pyrèthre (différence non significative); la seule autre espèce de ce complexe a étéAn. gambiae. Ces deux espèces appartenant au complexe An. gambiae ont été responsable de la totalité de la transmission. L'indice d'anthropophilie, calculé sur les femelles An. gambiae s.l. semigravides capturées au pyrèthre, a été de 83%. Le taux annuel de piqûre d'An. gambiae s.l. a varié entre 512 et 1558 piqûres par homme, selon les villages. Des vecteurs ont été observés toute l'année, à une densité très faible en saison sèche. Une importante augmentation de la population anophélienne, liée aux pluies, a atteint un maximum de l'ordre d'une dizaine de piqûres par homme par nuit en septembre et au début d'octobre; en septembre le taux de piqûres représentait 48% du taux de piqûre annuel. L'indice sporozoïtique moyen d'An. gambiae s.l., déterminé par ELISA révélant la protéine circumsporozoïte, a été de 1,6% pour les femelles agressives et de 1,8% pour les femelles semigravides au repos (différence non significative). Plasmodium falciparum a été la seule espèce plasmodiale observée parmi les anophèles infectés. La transmission dans les deux villages représentatifs de la zone de Niakhar a été de 9 et 12 piqûres d'anophèles infectés par homme par an, survenant principalement entre août et octobre. Dans le troisième village, non représentatif de la zone par ses gîtes larvaires permanents, la transmission a été de 26 piqûres d'anophèles infectés par homme par an. L'ensemble de ces résultats a été discuté dans le contexte de la SénéGambie et du Sahel. The anopheline bioecology and the malaria transmission were studied from January to December 1995 in three villages of the sahelian rural area of Niakhar, Senegal. This area of 29 000 inhabitants, has been for several decades, a regional observatory for population and health. The three methods used for collecting mosquitoes were the collection at larval stages, the all night human biting collection, and the pyrethrum spray catch in houses during afternoons. The anophelines collected were, by numerical importance: Anopheles arabiensis, An. rufipes, An. gambiae, An. pharoensis, An. funestus and An. coustani. In the An. gambiae complex, An. arabiensis represented 97% ...

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Analyse cytogénétique du complexe Anopheles gambiae dans un village du Sud-Est du Burkina-Faso

Cited by 5 publications

References 5 publications

Beyond Nature and Nurture: Phenotypic Plasticity in Blood-Feeding Behavior of Anopheles gambiae s.s. When Humans Are Not Readily Accessible

Beyond Nature and Nurture: Phenotypic Plasticity in Blood-Feeding Behavior of Anopheles gambiae s.s. When Humans Are Not Readily Accessible

Chloroquine and sulphadoxine‐pyrimethamine efficacy for uncomplicated malaria treatment and haematological recovery in children in Bobo‐Dioulasso, Burkina Faso during a 3‐year period 1998–2000

La transmission du paludisme dans la zone de Niakhar, Sénégal

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