scholarly journals First digital characterization of the transhumance corridors through Benin used by cattle herds from Burkina Faso and associated risk scoring regarding the invasion of Rhipicephalus ( Boophilus ) microplus

2020 ◽  
Author(s):  
Olivier M. Zannou ◽  
Achille S. Ouedraogo ◽  
Abel S. Biguezoton ◽  
Laetitia Lempereur ◽  
Kouassi Patrick Yao ◽  
...  
Keyword(s):  
Burkina Faso ◽  
Boophilus Microplus ◽  
Risk Scoring ◽  
Cattle Herds ◽  
Transhumance Corridors

scholarly journals Selection and characterization of peptides mimetic to Campylobacter fetus subsp. venerealis using phage display

2021 ◽  
Vol 51 (8) ◽  
Author(s):  
Eduardo Lara Ribeiro ◽  
Patrícia Tiemi Fujimura ◽  
Carlos Ueira-Vieira ◽  
Luiz Ricardo Goulart ◽  
Telma Maria Alves ◽  
...  
Keyword(s):  
Phage Display ◽  
Phage Library ◽  
Hyperimmune Serum ◽  
Subclinical Disease ◽  
Campylobacter Fetus ◽  
Fetus Subsp ◽  
Cattle Herds ◽  
Cervicovaginal Mucus ◽  
Bovine Genital Campylobacteriosis

ABSTRACT: Bovine genital campylobacteriosis (BGC) is a venereal and subclinical disease that affects the fertility of cattle herds, and it is caused by Campylobacter fetus subsp. venerealis . This study selected peptides mimetic to the BGC-causing agent from a phage library. Phage display is a technique that applies bacteriophage libraries that reveal peptides fused to the viral capsid in biological selections against target proteins. Biopannings were performed for biological selection in the phage library using rabbit hyperimmune serum and C. fetus subsp. venerealis protein extract. Five selected heptapeptides were considered mimetic to Cfv-NCTC 10354 based on the results of bioinformatics analysis and assays with hyperimmune serum and cervicovaginal mucus obtained from heifers. ALASLPL and LSYLFPP were the most reactive peptides and considered promising as possible mimetic immunogens for C. fetus subsp. venerealis.

scholarly journals Biocidal potential of Eugenia pyriformis essential oil in the control of Rhipicephalus (Boophilus) microplus in the free-living cycle

2019 ◽  
Vol 39 (11) ◽  
pp. 879-888
Author(s):  
Jaqueline P. Medeiros ◽  
Wanessa C. Bortollucci ◽  
Eloisa S. Silva ◽  
Herika L.M. Oliveira ◽  
Caio F.A.A. Campo ◽  
...  
Keyword(s):  
Essential Oil ◽  
Immersion Test ◽  
Probit Analysis ◽  
Boophilus Microplus ◽  
Control Measures ◽  
Cattle Tick ◽  
Free Living ◽  
Adult Females ◽  
Southern Cattle Tick ◽  
Cattle Herds

ABSTRACT: Brazil has one of the largest commercial cattle herds in the world, which naturally coexist with an enormous number of parasitic species. Southern cattle tick, Rhipicephalus (Boophilus) microplus, is among these species, interfering with animal productivity and causing losses to the beef and dairy cattle sector. The use of chemical acaricides in the control of this mite has resulted in the emergence of resistant populations. In this sense, alternative control measures using plants as sources of botanical acaricides have shown to be effective. Eugenia pyriformis Cambess is a Brazilian plant with antioxidant and antimicrobial activity; however, there are no reports on its acaricidal activity in the literature. The present study aimed to evaluate the acaricidal and larvicidal potential of E. pyriformis leaf essential oil (EO) on southern cattle tick at different stages of the reproductive cycle. E. pyriformis leaves were collected and dried, and had their EO extracted by hydrodistillation (3h) using a modified Clevenger apparatus. Chemical analysis was performed by gas chromatography coupled with mass spectrometry (GC/MS), and 32 compounds belonging to the sesquiterpene class were identified: hydrocarbons (17.98%) and oxygenated forms (81.96%), with spathulenol (43.65%) and caryophyllene oxide (12.17%) as the most common. The EO was evaluated by the Adult Immersion Test at the concentrations (500.00 to 3.12mg/mL) in which the following parameters were measured: mortality of females (%), hatchability of eggs (%), and product efficiency (%). Larvae were assessed by the Larval Packet Test at concentrations ranging from 25.00 to 0.00004mg/mL. Lethal concentrations (LC) required for killing 50 and 99.9% of adult females and larvae were determined using Probit analysis. LC50 and LC99.9 of EO were 0.06 and 24.60mg/mL and 1,208.80 and 2,538mg/mL for larvae and adult females, respectively. Action of the EO in the free-living cycle of R. (B.) microplus larvae was another parameter assessed. To this end, the larvae were deposited in pots containing Brachiaria decumbens and, after migration to the leaf apex, a solution containing LC99.9 (24.60mg/mL) of the EO was sprayed. After 24h, 72.25% of the larvae had died, indicating stability of the EO when subjected to uncontrolled temperature and humidity conditions. The mechanism of action through which the EO killed the larvae and adult females was investigated by the Bioautographic Method, which showed inhibition of 3.15mg/mL of the EO on the acetylcholinesterase (AChE) enzyme. The results found in the present experiment indicate that E. pyriformis essential oil is an alternative in the control of southern cattle tick in the larval (parasitic) and free-living cycle (non-parasitic) stages under field conditions.

scholarly journals Isolation and Characterization of Hydrocarbon-Degrading Bacteria from Wastewaters in Ouagadougou, Burkina Faso

2014 ◽  
Vol 05 (12) ◽  
pp. 1183-1196 ◽  
Author(s):  
Adama Sawadogo ◽  
Otoidobiga C. Harmonie ◽  
Joseph B. Sawadogo ◽  
Aminata Kaboré ◽  
Alfred S. Traoré ◽  
...  
Keyword(s):  
Burkina Faso ◽  
Isolation And Characterization ◽  
Degrading Bacteria

Agromorphological Characterization of a Collection of Senna obtusifolia (L.) in Burkina Faso

2021 ◽  
pp. 26-35
Author(s):  
Haoua Nacambo ◽  
Kiswendsida Romaric Nanema ◽  
Boureima Sawadogo ◽  
Mahamadou Sawadogo
Keyword(s):  
Burkina Faso ◽  
Quantitative Traits ◽  
Breeding Program ◽  
Block Type ◽  
Agronomic Performance ◽  
Herbaceous Species ◽  
Senna Obtusifolia ◽  
Subsaharan Africa ◽  
Several Variables

Aims: Senna obtusifolia (L.) is an important wild herbaceous species for subsaharan Africa population. It is used in human food and traditional medicine to treat several deseases. In Burkina Faso, despite its potentialities, this species is of a little interest in scientific research. The aim of this study is to provide a good knowledge of the genetic diversity of this species. Study Design: The experimental design used was a randomized Fischer block type with three replications. Place and Duration of the Study: The study was carried out at Gampéla during 2018 rainy season. Methodology: Seventy (70) accessions of Senna obtusifolia were used for the evaluation of agromorphological variability. A total of twenty-seven (27) quantitative traits were studied. Results: The study revealed the existence of a great variability within the studied collection. Among the twenty-one (21) traits used for the analysis of variance (ANOVA), seventeen (17) variables significantly discriminate the accessions. A high heterogeneity was observed for the number of leaflets of the three first leaves and the number of floral pieces. In addition, significant correlations were observed between several variables. Indeed, the number of primary branches was positively correlated with the number of fruits per plant (r = 0.483), the number of grains per plant (r = 0.352) and the leaves biomass (r = 0.279). However, the number of days at flowering (NJF) is negatively correlated with the number of primary branches (r = -0.281). The variability obtained was structured in three groups. The third group is composed of accessions with the best agronomic performance that could be used in future breeding program. Conclusion: A high agromorphological diversity of Senna obtusifolia was observed and could be used in a breeding program.

Characterization of the Lateritic Soil of Kamboinsé (Burkina Faso)

2021 ◽  
pp. 363-369
Author(s):  
Marie Thérèse Marame Mbengue ◽  
Adamah Messan ◽  
Abdou Lawane ◽  
Anne Pantet
Keyword(s):  
Burkina Faso ◽  
Lateritic Soil

scholarly journals Genetic Characterization of HPAI (H5N1) Viruses from Poultry and Wild Vultures, Burkina Faso

2007 ◽  
Vol 13 (4) ◽  
pp. 611-613 ◽  
Author(s):  
Mariette F. Ducatez ◽  
Zekiba Tarnagda ◽  
Marc C. Tahita ◽  
Adama Sow ◽  
Sebastien de Landtsheer ◽  
...  
Keyword(s):  
Burkina Faso ◽  
Genetic Characterization ◽  
Hpai H5n1

scholarly journals Rhipicephalus (Boophilus) microplus: expression and characterization of Bm86-CG in Pichia pastoris

2011 ◽  
Vol 20 (2) ◽  
pp. 103-110 ◽  
Author(s):  
Rodrigo Casquero Cunha ◽  
Renato Andreotti ◽  
Fábio Pereira Leivas Leite
Keyword(s):  
Pichia Pastoris ◽  
Boophilus Microplus ◽  
Economic Losses ◽  
Cattle Tick ◽  
High Antibody ◽  
Western Blot Assay ◽  
Development Of Resistance ◽  
Cattle Ticks ◽  
Antibody Titers

The cattle tick Rhipicephalus (Boophilus) microplus is responsible for great economic losses. It is mainly controlled chemically, with limitations regarding development of resistance to the chemicals. Vaccines may help control this parasite, thereby reducing tick pesticide use. In this light, we performed subcloning of the gene of the protein Bm86-GC, the homologue protein that currently forms the basis of vaccines (GavacTM and TickGardPLUS) that have been developed against cattle ticks. The subcloning was done in the pPIC9 expression vector, for transformation in the yeast Pichia pastoris. This protein was characterized by expression of the recombinant Mut+ strain, which expressed greater quantities of protein. The expressed protein (rBm86-CG) was recognized in the Western-blot assay using anti-Gavac, anti-TickGard, anti-larval extract and anti-rBm86-CG polyclonal sera. The serum produced in cattle vaccinated with the antigen CG rBm86 presented high antibody titers and recognized the native protein. The rBm86-GC has potential relevance as an immunogen for vaccine formulation against cattle ticks.

Localization and function ofRhipicephalus (Boophilus) microplusvitellin-degrading cysteine endopeptidase

Parasitology ◽  
2010 ◽  
Vol 137 (12) ◽  
pp. 1819-1831 ◽  
Author(s):  
ADRIANA SEIXAS ◽  
ANDRÉIA B. ESTRELA ◽  
JULIANA C. CEOLATO ◽  
EMERSON G. PONTES ◽  
FLÁVIO LARA ◽  
...  
Keyword(s):  
Fat Body ◽  
Boophilus Microplus ◽  
Basal Region ◽  
Cysteine Endopeptidase ◽  
Endopeptidase Activity ◽  
And Function ◽  
The Tropics ◽  
Different Tissues ◽  
Important Parasite

SUMMARYThe tickRhipicephalus (Boophilus) microplusis an important parasite of cattle in many areas of the tropics. Characterization of molecules involved in mechanisms such as vitellogenesis and embryo development may contribute to a better understanding of this parasite's physiology. The vitellin-degrading cysteine endopeptidase (VTDCE) is the most active enzyme involved in vitellin hydrolysis inR. micropluseggs. Here we show an association between VTDCE and vitellin in an additional site, apart from the active site. Our data also demonstrate cysteine endopeptidase activity in different tissues such as ovary, gut, fat body, salivary gland and female haemolymph, where it is controlled by a physiological inhibitor. InR. microplusfemale gut, VTDCE is localized in areas of protein synthesis and trafficking with the underlying haemolymph. VTDCE is also localized in the ovary basal region, in vesicle membranes of ovary pedicel cells and in oocyte cytosol. These results suggest that VTDCE plays a role in vitellin digestion during tick development.

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