West Africa Research Articles

Logistics challenges in used car maritime traffic from Europe to west Africa

This paper addresses the main logistics challenges in used car maritime traffic from Europe to West Africa. Thus, the methodology (quantitative and qualitative) analyses data from the International Organization of Motor Vehicle Manufacturers (OICA), from 2015 to 2023 of government and port authorities to show the importance of used car market for mobility and socioeconomic activities. This is supplemented by surveys based on direct observation in the field, questionnaires and interviews involving in Europe 55 stakeholders and 127 in Africa. The results demonstrate that cars used and their parts, but not wrecks, are essential for motorization in West Africa. A pre-export process needs to be set up to ensure that exported vehicles are parked in better condition to meet the required common environmental standards for sustainable mobility.

A Nitbit Citation of the Contributions of Sheikh Abdullahi Fodiyo in the Public Health of The 19th Century West Africa and Beyond: A Case Study of "Kitaabu Niyyati Fil' A'amaliddunyawiyyati Wal'ddiniyyati" (A Book of Intentions in the Issues of World and

Nowadays, invariably health improvement, health education, health benefits are attached to religiosity as confirmed by inexhaustible literatures. This paper reviewed some of the contributions of Sheikh Abdullahi Fodiyo in the public health of 19th century West African Sokoto Caliphate and afterwards in his famous book called "Kitaabu Niyyati Fil' A'amaliddunyawiyyati Wal'ddiniyyati" (A book of intentions in the issues of world and religion). In the examined book, he stressed the importance of cleanliness, ablution, prayer, work/ employment/ wealth, agriculture, and meat production in the development and sustainability of society, let alone the Muslim ummah. He warned against unemployment, lack of personal hygiene, poor production and handling of food/ meat among others. Certainly, the book exhorts benefits to public health especially in Islamic societies. There is need to use religion as health education, and health promotion tool especially in religious societies for better health and interventions.

Relationships between flower-visiting insects and forest cover in cocoa-growing landscapes in Ghana

Abstract Context Increased cocoa cultivation (Theobroma cacao) has led to the conversion of over 6 million hectares of rainforest to cocoa farmlands in West Africa. Globally, pollinator decline has been driven by land use changes. Though land use change through cocoa expansion may affect insect pollinators and, by extension, pollination services, this has rarely been assessed. Objectives Our study examined the relationships between the proportion of natural forest in the landscape (reduced primarily due to cocoa expansion) and flower-visiting insect abundance, and bee abundance, richness, diversity and community composition. The effect of pan trap type (aerial or ground) was also tested. Methods Eighteen sites were selected along a gradient of an increasing proportion of natural forests in the surrounding landscape (from 9 to 100%). Ground and aerial pan traps were deployed in each site to sample flower-visiting insects. Two sampling sessions were conducted; during the rainy season in 2021 and during the dry season in 2022. Results The abundances of Coleoptera, Hymenoptera and Hemiptera increased with increasing proportion of natural forests in the landscape, while Diptera decreased. Natural forest and trap type did not significantly influence bee abundance, species richness, and Shannon diversity. However, bee community composition differed along the forest gradient, indicating that forests and cocoa farms harbour different bee communities. Ground pan traps captured more insects (61% of 19,927 flower-visiting insects) than aerial pan traps, which was driven by the Diptera as the abundances of the other orders were not significantly related to trap type. Conclusions Preserving natural forest in cocoa-growing landscapes is important to sustain the coexistence of diverse flower-visiting insect communities owing to their differential responses to the proportions of natural forests.

A Lassa virus live attenuated vaccine candidate that is safe and efficacious in guinea pigs

AbstractLassa virus (LASV) is a rodent-borne mammarenavirus that causes tens to hundreds of thousands of human infections annually in Western Africa. Approximately 20% of these infections progress to Lassa fever (LF), an acute disease with case–fatality rates from ≈20–70%. Currently, there are no approved vaccines or specific therapeutics to prevent or treat LF. The LASV genome consists of a small (S) segment that has two genes, GP and NP, and a large (L) segment that has two genes, L and Z. In both segments, the two genes are separated by non-coding intergenic regions (IGRs). Recombinant LASVs (rLASVs), in which the L segment IGR was replaced with the S segment IGR or in which the GP gene was codon-deoptimized, lost fitness in vitro, were highly attenuated in vivo, and, when used as vaccines, protected domesticated guinea pigs from otherwise lethal LASV exposure. Here, we report the generation of rLASV/IGR-CD, which includes both determinants of attenuation and further enhances the safety of the vaccine compared with its predecessors. rLASV/IGR-CD grew to high titers in Vero cells, which are approved for human vaccine production, but did not cause signs of disease or pathology in guinea pigs. Importantly, guinea pigs vaccinated with rLASV/IGR-CD were completely protected from disease and death after a typically lethal exposure to wild-type LASV. Our data support the development of rLASV/IGR-CD as a live-attenuated LF vaccine with stringent safety features.

Riding the Dragon’s Rails: Unpacking the Impacts of Chinese-Built Railway in Nigeria

This research investigates the impacts of China’s development assistance on African development through Nigeria’s Abuja–Kaduna railway, West Africa’s first modern railway constructed with Chinese aid. Grounded in urbanization and dependency theories and utilizing interviews, focused group discussions (FGDs), and a comprehensive literature review, this study evaluates both positive and negative impacts. Findings reveal socio-economic benefits for Nigeria, including employment generation, improved connectivity, and infrastructure renewal, while also identifying challenges such as community displacement and limited technology transfer. This analysis sheds light on China’s role in African railway development, China–Nigeria relations, and the broader implications of Chinese involvement. By enriching empirical knowledge and presenting a balanced view, this study fosters a nuanced understanding of infrastructure development’s role in Africa’s progress.

A Novel Curriculum for Surgical Oncology Fellowship Training in West Africa.

Low- and middle-income countries (LMICs) lack the surgical capacity to contend with the growing burden of cancer care. West Africa is particularly affected, where limited cancer surgery is performed primarily by general surgeons without any subspecialty training. As a first step to develop surgical oncology capacity in the region, the West African College of Surgeons (WACS) in partnership with the Global Oncology Group at Queen's University, Canada, co-created a novel surgical oncology fellowship training program. Curriculum development began with a literature review of publications, global position statements, and curricular documents from surgical oncology societies and accreditation bodies. The results were reviewed by the WACS team members to reach consensus on the competencies and objectives of the program based on the perceived needs and available resources in West Africa. Iterative discussions between the Queen's Global Oncology Group and WACS leadership led to the creation of the surgical oncology curricular documents. A curriculum tailored to the West African context was developed to deliver essential knowledge, skills, and competencies for surgical oncologists in the region. The curriculum focuses on the six core domains of general surgical oncology, highlighting specific knowledge base and procedural skills within each clinical domain. Educational activities were outlined and the curriculum format, delivery, and trainee assessment were also described. A surgical oncology curriculum developed specifically for the West African context will enhance the capacity for cancer surgery in the region. This curriculum may serve as a model for future surgical oncology program development in LMICs.

Syllabification in Optimality Theory

This paper examined syllabification in the Sokoto dialect of Fulfulde within the framework of Optimality Theory. The theory employed constraint-based rather than rule-based notations in the analysis of the grammar of languages. This study focused on the Sokoto dialect of Fulfulde in view of the number of dialects of the language spoken across West Africa. Using field-based data, the analysis revealed the salient syllabification requirements of Fulfulde. Findings showed that the syllables of the Sokoto dialect of Fulfulde require onsets and nuclei as obligatory elements. Syllable onsets in the dialect are maximally composed of a single consonant as complex onsets are prohibited. Codas are optional and may be simple or complex. A restriction placed on coda consonants is that except half of geminates, only sonorants are allowed, although in word-final positions, [ŋ], a sonorant, is not attested. These outcomes demonstrated the extent of conformity of Sokoto Fulfulde syllables with the markedness constraints governing syllable structure and the Syllable Contact Law. Further findings indicated that although syllabification in languages is grounded in the sonority of segments vis-à-vis the restrictions that languages place on phoneme combinations, the sonority scale, as presently designed does not adequately handle syllabification in this dialect; calling for an all-inclusive sonority scale.

Assessing the Amending and Fertilizing Properties of Digestates From Anaerobic Digestion of Faecal Sludge in Burkina Faso, West Africa

The aim of this work is to contribute to the agronomic utilization of digestate from the anaerobic treatment of faecal sludge at the Office National de l’Eau et de l’Assainissement (ONEA) Kossodo plant in Burkina Faso. Digestates were sampled and dried in the laboratory (25±2 °C). Physico-chemical and microbiological parameters were determined using standard methods. The degree of maturity of the digestate was determined using respirometry and humification tests. The effects of digestate on plants and on environment were studied using phytotoxicity, emergence, growth tests and microbiological analysis. The results revealed a pH of 8.54, electrical conductivity of 7300 µS/cm, 25.42% dry matter, 83.31% organic matter, and 489.8 g/kg total organic carbon. The C/N ratio was 9.7 and the NO3/NH4 ratio was 23.34, indicating mature compost despite other indicators suggesting that the digestate was only partially stabilized. Nutrient contents were 50.48 g/kg total nitrogen, 0.02 g/kg total phosphorus, and 4.72 g/kg total potassium. Water-soluble minerals included 1.97 g/kg ammonium, 45.99 g/kg nitrate, 0.02 g/kg nitrite, 0.35 g/kg phosphate, and 5.90 g/kg sulfate. Phytotoxicity tests showed that cabbage seeds had a germination rate of 89% with digestate filtrate compared to 100% in the control, while tomato seeds had a 100% germination rate with digestate filtrate. The germination indices were 137.58 for tomato and 82.10 for cabbage. Tests on tomato plant growth showed significant effects on biomass, height, leaf number, and branch number, with the 50% digestate proportion demonstrating the highest values. Microbiological analysis detected total aerobic flora at 4.75E+07 CFU/g, yeasts and molds at 7.77E+04 CFU/g, and coliforms at various levels, with potential pathogens such as S. aureus and Salmonella sp. reaching 6.14E+04 and 2.65E+06 CFU/g respectively. The presence of these pathogens suggests a need for further treatment of digestate to ensure safety before field application.

Disentangling regional climate change: assessing the contribution of global- and regional-scale anthropogenic factors to observed regional warming

Abstract While the influence of uniformly-distributed well-mixed greenhouse gas emissions on global warming is well-documented and robustly attributed through multiple lines of evidence, regional attribution remains more challenging and dependent on the performance and resolution of climate models. This study investigates the extent to which observed regional temperature trends are attributable to global-scale anthropogenic factors, mainly the direct effects of CO2, aiming to differentiate the portion of the change attributable to regional-scale drivers and local feedback mechanisms. To quantify the contribution of global- and regional-scale climate drivers to observed temperature change, I conducted regression analyses using the observed temperature change in HadCRUT4 and the global warming index derived from global radiative forcing series. Results indicate that in certain regions—specifically West Asia, East N. America, West Africa, and the Amazon— 62 ± 7%, 61 ± 13%, 58 ± 7%, and 61 ± 10% of the warming observed over 1991–2020 can be attributed to global anthropogenic warming, primarily the direct effects of CO2. The remaining portion, which represents 22 ± 8%, 21 ± 16%, 27 ± 9%, 23 ± 14% of the observed warming, is attributable to regional drivers. The Mediterranean showcases high sensitivity, with regional drivers contributing 31 ± 13% of the observed 1.2 ∘ C warming, amplifying the warming attributed to global anthropogenic drivers, estimated at 55 ± 10%. The Arctic Ocean along with the Russian-Arctic region exhibits a substantial contribution from regional drivers and local feedback mechanisms (the indirect effects of CO2) to the observed warming amplification, quantified at 43 ± 15% of the 3 ∘C warming over 1991–2020. Regional cooling drivers, however, are significant in East Asia and the Tibetan Plateau, with the latter experiencing a cooling contribution of − 42 ± 17%. By breaking down the contributions of climate drivers into global and regional-scale components, we gain valuable insights into the local climate mechanisms responsible for the observed regional warming, which is a crucial factor that affects agriculture, ecosystems and societies.

Effect of Two Biofertilisers Based on Endophytic Fungi on Fall Armyworm Infestations in Maize Production in the Kara Region of Togo, West Africa

Aims: The aim of the study was to assess the efficacy of two biofertilisers based on endophytic fungi on infestation rates, foliar damage and maize yield losses caused by the armyworm, Spodoptera frugiperda, a worst maize pest. Study Design: Completely Randomized Design (CRD) with three types of treatments. Place and Duration of Study: Agronomic Experimentation Station of Tchitchao, Kara (Togo), between October 2019 and March 2020. Methodology: A complete randomized block design was used with three types of treatments: (i) maize seeds inoculated with Glomus sp. strain 142, (ii) maize seeds inoculated with Mycotri, (iii) maize seedlings fertilized with NPK and urea and finally (iv) a control consisting of seeds and/or seedlings of maize neither fertilized nor inoculated. Results: The results show that the plots treated with endophytic fungi recorded significantly lower infestation rates compared with the fertiliser treatments and the control. The highest infestation rates were 54% at 38 days after sowing (DAS) and 45% at 31 DAS for treatments with 5.35 x 105 spores/ha Glomus sp. and 0.38 kg/ha Mycotri, respectively, compared with 78% at 31 DAS and 62% at 38 DAS for fertiliser treatments and the control. The highest level of leaf damage, 2.92, was observed at 33 DAS on the plots fertilised with fertiliser, compared with scores of 2.53 and 2.38 for the plots mycorrhised with Glomus sp. and Mycotri, respectively. Yields were significantly higher in the fertilised plots (3.87 t/ha), followed by the mycorrhised plots (2.62-3.01 t/ha) and the control (1.73 t/ha). Conclusion: The endophytic fungi enabled the plants to tolerate fall armyworms attacks better than the controls, offering an alternative to chemical fertilisers and an effective option for managing soil fertility and controlling Spodoptera frugiperda.

Lemongrass-Synthesized Silver Nanoparticles as Preservatives of Fermented Locust Beans

Fermented locust beans (FLB), produced from Parkia biglobosa (Mimosaceae-Fabaceae), are used in many parts of West Africa, including Nigeria, as condiments to enhance the taste and nutritional quality of foods. These benefits are, however, marred by the short shelf-life of FLB. Traditional preservative methods and the use of chemicals have their shortcomings. This study, therefore, investigated the effectiveness of lemongrass-synthesized silver nanoparticles (LSSNP) as a preservative of FLB. The LSSNP was prepared, characterized, and used to treat fresh FLB at 10% v/w. Dynamic light scattering analysis revealed a mean hydrodynamic size of 89 nm for the LSSNP, while transmission electron micrograph showed roughly spherical particles with an average size of 100 nm. Bacillus licheniformis KGEB16, B. licheniformis APBSWPTB167, B. licheniformis PS4, B. subtilis CICC10148, and Enterobacter xiangfangensis M5S2B6 isolated were susceptible to LSSNP with comparable zones of inhibition to reference antibiotics. A significant reduction of the microbial load of FLB by up to 63.7% due to LSSNP treatment was achieved. The organoleptic and proximate properties of LSSNP-treated FLB were preserved. A histo-morphological study showed normal hepatic architecture in rats fed with LSSNP-treated FLB. This study showed that LSSNP possesses antimicrobial properties and can be employed as a green and safe alternative for the preservationof FLB.

Hydrochemical Assessment of Groundwater Quality in the City of Manga and the Surrounding Area, Burkina Faso, West Africa

Hydrochemical Assessment of Groundwater Quality in the City of Manga and the Surrounding Area, Burkina Faso, West Africa

Analysis of access to amenities in peri-urban areas in West Africa: A GIS-based approach in Abomey-Calavi, Republic of Benin

Urban facilities and services are essential to human life. Access to them varies according to the geographical location of the population, whether urban, peri-urban or rural, and according to the modes of transport available. In view of the rapid development of peri-urban areas in developing countries, questions are being asked about the ability of the inhabitants of these areas to access these facilities and services. This study examines the ability of the inhabitants of Hêvié, Ouèdo and Togba, three peri-urban districts of Abomey-Calavi in the Republic of Benin, to access commercial, educational, school and health facilities. To this end, we have adopted a GIS-based methodology. It is a combination of isochronal method and accessibility utility measurement. The isochrones were produced according to the main modes of travel recorded on the study area and over a time t ≤ 20 min divided into intervals of 05 min. Analysis of the data enabled us to understand that the main modes of travel adopted by residents are walking, motorcycle and car. Access to educational and health facilities is conditioned by the mode of travel used. Access to commercial and entertainment facilities in t ≤ 20 min is not correlated with the modes of transport used.

Recent Molecular Epidemiology of Echovirus 11 Throughout North and West Africa Resulted in the First Identification of a Recombinant Strain from an Acute Flaccid Paralysis Case in West Africa

Echovirus 11 has emerged as a major public health concern, causing sepsis in neonates in many European countries in recent years. In Africa, especially West Africa, where resources and diagnostic capacities are limited, only sporadic cases have been reported. To better understand the recent molecular epidemiology of E11 in West Africa, we characterized twenty-three echovirus 11 strains isolated through the acute flaccid paralysis and environmental surveillance systems for polio from 2013 to 2023, using high-throughput sequencing. Our data are noteworthy due to identifying for the first time a recombinant strain from an acute flaccid paralysis case and represent the first focus to date on molecular characterization of echovirus 11 in West Africa. Moreover, our data show that echovirus 11 diverged from 1970 (95% HPD range, 1961–1979) and evolved into four distinct clades, with the virus spread from West Africa to Europe, exhibiting two introductions in France around 2017, from Senegal and Guinea. Furthermore, the in silico analysis reveals four non-conservative amino acid substitutions in the VP1 sequences of the European strains associated with neonatal sepsis in newborns and a conserved amino acid motif in the VP1 protein toward enterovirus genotypes. Our data provide new insights into the epidemiology of echovirus 11 and point to the crucial need to implement specific surveillance programs targeting non-polio enteroviruses for the rapid identification of emerging or re-emerging enterovirus species, particularly in Africa.

The Process and Current Situation of Islam Localization in Senegal

Islam originated in the Arabian Peninsula and spread to the Maghreb region inhabited by Berbers in the late 7th century and early 8th century, and then spread further to West Africa south of the Sahara from north to south. Around 850 AD, the first group of black Africans converted to Islam. They belonged to the Dya’ogo dynasty of the Tekur Kingdom, which is located in the Senegal River Valley in present-day Senegal. Currently, Senegal is one of the countries with the highest proportion of Muslim population in West Africa, with 94% of its people believing in Islam. Not only that, Senegal has also developed a unique Islamic system dominated by the Brotherhood. This article attempts to sort out the process of Islam localization in Senegal and explain the impact of the Brotherhood on contemporary Senegalese politics and economy.

The Book of the Desert

This article proposes an analysis of the Book of the Desert (Kitāb al-Bādiya), a nineteenth-century legal treatise composed by Muḥammad al-Māmī (d. 1282/1865), a Muslim scholar from the Tiris desert in present-day Mauritania. Al-Māmī’s text reflects on the adaptation of sharia—the religious law of Islam—to the needs of pastoral populations in the Saharan West. How to embrace a normative system seemingly incompatible with nomadic life, given that it presupposes a state governed by an Islamic ruler (imām) and considers the city the natural environment of legal institutions? Challenging the narratives of center-periphery and the so-called post-classical “decline” that continue to structure the field of Islamic intellectual history, the article explores the different contextual layers of al-Māmī’s reasoning. He was a religious notable deeply involved in power struggles between nomadic groups and a fervent supporter of eighteenth- and nineteenth-century jihad movements in West Africa. But he was also a jurist of the Maliki school, who approached his society from the perspective of Islamic legal thought, and a Bedouin preoccupied with the legal and religious implications of the cultural gulf between his world and that of the towns.

The nexus between multilingualism and criminality in West Africa through the lens of symbolic interactionism theory

The nexus between multilingualism and criminality in West Africa through the lens of symbolic interactionism theory

Non‐breeding home range and habitat use by European Pied Flycatcher (Ficedula hypoleuca) in northwest Liberia: apparent resilience to forest degradation?

Identifying population drivers of migratory birds requires knowledge of species' ecology throughout their annual cycle. For most Afro‐Palaearctic migratory species, little is known about non‐breeding habitat use, despite extensive land use change in non‐breeding areas of sub‐Saharan Africa being a key factor implicated in population decline. We radio‐tracked 54 Pied Flycatchers Ficedula hypoleuca at two sites of differing levels of forest disturbance, in Liberia, western Africa, over three non‐breeding seasons to determine home range size and site fidelity, and describe habitat and tree species preference within home ranges. We found high territory fidelity both within and between years, and a preference for well‐wooded landscapes. We found that Pied Flycatcher presence was positively associated with large and mature trees, and areas with a higher density of trees. Pied Flycatchers preferred several tree species that were uncommon within home ranges, and several non‐native tree species likely to support a high invertebrate abundance. Pied Flycatchers preferentially selected areas burnt in the same or previous winter, possibly related to enhanced food resources associated with vegetation regrowth following burning. We also found no significant difference in home range size between sites and similar habitat associations despite differences in habitat disturbance. This suggests that human‐modified habitats may remain suitable for Pied Flycatchers, as long as they retain moderate tree cover, especially larger, taller and more mature trees, whether native or non‐native.

The Evolution of Cameroonian Cooperation with the Soviet Union and the Russian Federation: A Historical and Geopolitical Analysis

This paper investigates the historical and evolving relationship between Cameroon and the Soviet Union and later, the Russian Federation, focusing on political, military, economic, and cultural dimensions. Positioned strategically at the crossroads of West and Central Africa, Cameroon has balanced longstanding ties with France against a growing partnership with Russia. Since the Soviet Union’s formal recognition of Cameroon's independence in 1964, Soviet support in education, infrastructure, and ideological alignment contributed to a foundational relationship grounded in anti-colonial and socialist values. Following the dissolution of the Soviet Union in 1991, relations were reestablished with the Russian Federation, shifting from ideological alignment to pragmatic cooperation, particularly in defense and economic engagement. Key findings indicate that Russia cooperation with Cameroon cut across education, reciprocal visa exemption agreement for holders of diplomatic and service passports, food trade and military defense. The study uses a qualitative methodology, incorporating primary sources such as government records, treaty documents, and public statements, alongside secondary sources including academic articles and policy analyses. This approach allows for an examination of key historical milestones, the role of security concerns, and economic priorities that have shaped Cameroonian-Russian relations over the years.

Evaluation of Chickpea Production under Different Management of Irrigation and Nitrogen Fertilizer

Background: Chickpea is a prominent leguminous crop cultivated in the West Asia and North Africa (WANA) region. Historically, it is planted during the spring season as a rainfed crop in the area, characterized by its unpredictable and frequently inadequate precipitation. Methods: To examine the impact of various levels of irrigation and nitrogen fertilizer on the yield and yield components of the Adel cultivar of chickpea, a factorial experiment was conducted based on a randomized complete block design with four replications at the research farm in Jolgeh Rokh District in Torbat-e Heydarieh (35.19 N, 59.45E) throughout the 2021 and 2022 growing seasons. The experimental treatments included three levels of nitrogen: 30, 75 and 150 kg ha-1 as urea fertilizer. The irrigation was applied at three levels: full irrigation, one supplementary irrigation at the flowering stage and two supplementary irrigations at the flowering and pod filling stages. The studied traits included grain yield, biological yield, the number of pods per plant, and the number of seeds per pod. Result: Our results showed that different levels of irrigation and nitrogen fertilizer had a significant effect on the number of seeds per pod, pods per plant and biological and grain yield. The interaction effect of irrigation and nitrogen fertilizer was significant for all studied traits. In this study, the interaction between the full irrigation treatment and 75 kg N ha-1 resulted in a significant increase in all traits (except biological yield) compared to other treatments. Furthermore, one irrigation at the flowering stage with 150 kg N ha-1 caused a significant decrease in all of the studied traits. The combination of full irrigation and 150 kg N ha-1 treatment had the highest biological yield (8.9 t ha-1), while its grain yield was 1854 kg ha-1. Therefore, by maintaining moisture levels during the critical period of chickpea growth and utilizing balanced nutritional levels, particularly nitrogen at rates of 30 and 75 kg ha-1, the yield of chickpea can be increased.