scholarly journals Bionomics of Aedes aegypti during the 2016-2017 dengue outbreaks in Ouagadougou, Burkina Faso.

2021 ◽  
Author(s):  
Athanase Badolo ◽  
Aboubacar Sombié ◽  
Felix Yaméogo ◽  
Dimitri W Wangrawa ◽  
Aboubakar Sanon ◽  
...  
Keyword(s):  
West Africa ◽  
Burkina Faso ◽  
Evidence Base ◽  
Immature Stage ◽  
Capital City ◽  
Adult Mosquito ◽  
Larval Habitats ◽  
Mosquito Abundance ◽  
Explanatory Variables ◽  
Partial Overlap

Dengues emergence in West Africa was typified by the Burkina Faso outbreaks in 2016 and 2017, the nation's largest to date. In both years, we undertook three-month surveys of Aedes populations in or near the capital city Ouagadougou, where the outbreak was centered. In urban, peri-urban and rural localities we collected indoor and outdoor resting mosquito adults, characterized larval habitats and containers producing pupae and reared immature stages to adulthood in the laboratory for identification. All mosquito adults were identified morphologically. Host species from which bloodmeals were taken were identified by PCR Generalized mixed models were used to investigate relationships between adult or larval densities and multiple explanatory variables. From samples in 1,791 houses, Ae. aegypti was the most abundant mosquito in the two urban localities where it occurred in 46% of containers sampled and comprised over 85% of collections. Results indicated a highly exophilic and anthropophilic (>90% bloodmeals of human origin) vector population, but with a relatively high proportion of bloodfed females caught inside houses. Habitats producing most pupae were waste tires (37% of total pupae), animal troughs (44%) and large water barrels (30%). While Stegomyia indices were not reliable indicators of adult mosquito abundance, shared influences on adult and immature stage densities included rainfall and container water level, collection month and container type/ purpose. Spatial analysis showed autocorrelation of densities, with partial overlap in adult and immature stage hotspots. Results provide an evidence base for the selection of appropriate vector control methods to minimize the risk, frequency and magnitude of future outbreaks in Ouagadougou. An integrated strategy combining community-driven practices, waste disposal and insecticide-based interventions is indicated. The prospects of developing a regional approach to arbovirus control in west Africa or across Africa was discussed.

Mali

2020 ◽  
Author(s):  
Marius Schneider ◽  
Vanessa Ferguson
Keyword(s):  
West Africa ◽  
Burkina Faso ◽  
Rural Areas ◽  
Ivory Coast ◽  
Southern Region ◽  
Capital City ◽  
Sahara Desert ◽  
Chronic Instability ◽  
The North

Mali is a landlocked country found in West Africa. Mali borders Algeria, Burkina Faso, Guinea, Ivory Coast, Mauritania, Niger, and Senegal. It is the eighth largest country in Africa with a population of nearly 18 million people as recorded in 2016. Only 10 per cent of the population live in the north, which represents nearly two-thirds of the country. While rich in minerals and oil, the north of Mali is desertified and suffers from chronic instability. The vast majority of people in Mali live in the southern region close to the Niger and Senegal rivers and far from the Sahara Desert. Rural areas account for 59 per cent of the population. The capital city is Bamako which is the only town in Mali with more than 1 million inhabitants and is the main commercial and industrial centre in the country. The second biggest city in terms of population is Sikasso with approximately 130,000 inhabitants.

Can Farmers of Burkina Faso Use Seasonal Rainfall Forecasts?

2000 ◽  
Vol 22 (4) ◽  
pp. 24-28 ◽  
Author(s):  
Carla Roncoli ◽  
Keith Ingram ◽  
Paul Kirshen
Keyword(s):  
West Africa ◽  
Burkina Faso ◽  
Agricultural Production ◽  
Scientific Information ◽  
Seasonal Rainfall ◽  
Seasonal Forecasts ◽  
Recent Event ◽  
Livelihood Security ◽  
Research Findings ◽  
Seasonal Rainfall Forecasts

In this article we bring anthropological reflections to bear on a recent event we participated in, whereby farmers and scientists came together to discuss the possibility of applying rainfall seasonal forecasts to improve agricultural production and livelihood security in West Africa. In so doing, We also report on the research findings from the project that organized this encounter and that we have been working with for the last three years. Our intent is to highlight the complexities and challenges inherent in this process of integrating scientific information and farmers' production decisions, while also pointing to practical issues to be considered in implementing such initiatives.

scholarly journals Technologies traditionnelles de transformation des graines de néré (Parkia biglobosa Jacq. R.Br.) en Afrique de l’Ouest : revue des principaux produits dérivés et contraintes de production.

2020 ◽  
Vol 152 ◽  
pp. 15698-15708
Author(s):  
COULIBALY DIAKITE Mariam ◽  
PARKOUDA Charles ◽  
COMPAORE Sidbewendé Clarisse ◽  
SAVADOGO Aly
Keyword(s):  
West Africa ◽  
Burkina Faso ◽  
Parkia Biglobosa ◽  
Afrique De L’Ouest ◽  
Time Data ◽  
Research Perspectives ◽  
Traditional Technologies ◽  
Locust Bean ◽  
African Locust Bean ◽  
Afrique De L'ouest

Les graines de néré (Parkia biglobosa) sont transformées traditionnellement en Afrique de l’Ouest en des condiments fermentés sous différentes appellations : soumbala au Burkina Faso, nététu au Sénégal, soumbara en Guinée Conakry, dawadawa et iru au Nigéria, afitin, iru et sonru au Bénin. Ces produits sont caractérisés par la variabilité de leur qualité et des contraintes liées à leur production. La présente revue a pour objectif d’analyser les technologies traditionnelles utilisées pour la production de ces condiments fermentés à base de graines de néré et de faire ressortir les contraintes/difficultés de production de ces condiments. Les données ont été collectées à travers les documents physiques consultés (thèses et mémoires) et à partir des articles scientifiques et d’autres documents trouvés en ligne. Il en résulte que les technologies de production traditionnelle des condiments à base de graine de néré en Afrique de l’Ouest, incluent principalement selon les zones et les ethnies, une première cuisson des graines allant de 12-48 h, un décorticage manuel des graines cuites, une seconde cuisson des graines décortiquées et lavées variant de 1-4 h et enfin, une fermentation des cotylédons cuits allant de 24-120 h. Ces technologies ont également en commun, des contraintes majeures de pénibilités du processus de cuisson, du décorticage/lavage, de la consommation importante d’énergie, d’eau et de temps. Les données de cette revue ouvrent ainsi de nouvelles pistes de recherche pour l’amélioration des procédés traditionnels de transformation des graines de néré. Mots clés : Graines de néré, condiment, soumbala, procédé, pénibilité. Coulibaly Diakite et al., J. Appl. Biosci. 2020 Technologies traditionnelles de transformation des graines de néré (Parkia biglobosa Jacq. R.Br.) en Afrique de l’Ouest : revue des principaux produits dérivés et contraintes de production 15699 Traditional technologies for processing African locust bean seeds (Parkia biglobosa Jacq. R.Br.) in West Africa: review on the main derivatives and production constraints. ABSTRACT African locust bean (Parkia biglobosa) seeds are traditionally transformed in West Africa into fermented condiments under different names: soumbala in Burkina Faso, netetu in Senegal, soumbara in Guinea Conakry, dawadawa and iru in Nigeria, afitin, iru and sonru in Benin. These products are characterized by the variability of their quality and the constraints linked to their production. The objective of this study is to analyze the traditional technologies used for the production of these fermented condiments and to highlight the constraints/difficulties associated to their production. The data were collected through the physical documents consulted (theses and dissertations) and from scientific articles and other documents found online. It appear that the traditional technologies used to produce P. biglobosa seeds based-condiments in West Africa, mainly include, according to the zones and ethnic groups, a first cooking of the seeds ranging from 12-48 h, a manual dehulling of the cooked seeds, a second cooking of the dehulled and washed seeds varying from 1-4 h and finally, a fermentation of the cooked cotyledons ranging from 24-120 h. These technologies have in common the major constraints of hardness of the process of cooking and dehulling/washing, significant consumption of energy, water and time. Data from this review opens research perspectives for the improvement of the traditional processing of P. biglobosa seeds. Keywords: P. biglobosa seeds, condiment, soumbala, process.

scholarly journals Lithostructural and Petrochemical Survey of Djarkadougou Gold Prospect (South West Burkina Faso / West Africa)

2017 ◽  
Vol 6 (1) ◽  
pp. 155
Author(s):  
Yao Honoré Koffi ◽  
Sagbrou Chérubin Djro ◽  
Urbain Wenmenga
Keyword(s):  
West Africa ◽  
Burkina Faso ◽  
Sedimentary Rocks ◽  
Ductile Deformation ◽  
Chemical Compositions ◽  
Calc Alkaline ◽  
Basaltic Rocks ◽  
Bimodal Volcanism ◽  
South West ◽  
Western Burkina Faso

The Djarkadougou gold prospect is located on the Birimian greenstone belt of the Houndé exploration permit held by the company Orezone Inc. The permit is at 275 km far from the capital Ouagadougou south- western Burkina Faso, West Africa. This area is based on sheared and metamorphosed greenschist facies rocks. Metamorphism locally reaches to the amphibolite facies around intrusions. There are two major lithological units whose interface is marked by a NW-SE trending shear corridor: an unit of andesite-basaltic rocks of andesitic breccias in the East and volcaniclastic and sedimentary unit composed flows, tuffs and felsic to mafic breccia, interbedded volcano-sedimentary rocks. All this together is intruded by plutonic rocks, and various felsic to mafic dykes. These rocks have undergone ductile to brittle heterogeneous deformations and hydrothermal alteration sericite ±carbonate ±quartz±sulphide within deformation corridors. The rocks of the East and West domains affected by three phases of brittle-ductile deformation (D1, D2, and D3) and the meteoric alteration is systematic in superficial facies of Djarakadougou core drilling.Geochemical analysis shows a tholeiitic to calc-alkaline volcanic serie characteristic a bimodal volcanism. The spectra of normalized REE chondrites are generally flat and constant reminding those of N-MORB basalt. The chemical compositions of andesite and basalt are deferred on several discrimination diagrams especially Th / Yb - Nb / Yb and 2 Nb - Zr / 4 - Y show that andesites and basalts of the prospect are issued in geotectonic setting of volcanism preponderant arc.

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