8 results on '"Boukhari, Intissar"'
Search Results
2. Composition and seasonality of Culicoides in three host environments in Rabat region (Morocco)
- Author
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Bourquia, Maria, Garros, Claire, Rakotoarivony, Ignace, Boukhari, Intissar, Chakrani, Moad, Huber, Karine, Gardes, Laëtitia, Wint, William, Baldet, Thierry, Khallaayoune, Khalid, Balenghien, Thomas, Bourquia, Maria, Garros, Claire, Rakotoarivony, Ignace, Boukhari, Intissar, Chakrani, Moad, Huber, Karine, Gardes, Laëtitia, Wint, William, Baldet, Thierry, Khallaayoune, Khalid, and Balenghien, Thomas
- Abstract
Morocco has suffered several outbreaks of Culicoides-borne viruses in recent decades and most studies have focused on Culicoidesimicola, considered for a long time as the only important vector. The change in bluetongue (BT) epidemiol-ogy in the Mediterranean Basin and Europe over the past two decades has high-lighted the role of other Culicoides species in BT virus transmission. The objective of this study was to provide new insights on the Culicoides species composition and seasonality in three different host environments (a horse-riding center, a goat farm and a cattle farm) around Rabat, the capital of Morocco, where BT has been endemic since 2004. Light / suction trap collections were carried out on two con-secutive nights at fortnight intervals from May 2016 to May 2017. Culicoides were identified morphologically at the species level when possible. Multivariate anal-yses were used to compare the impact of the site / vertebrate species, and the collection month on the species communities. In addition, statistical modelingwas used to identify environmental drivers of the Culicoides seasonality. A total of 12,460 Culicoides individuals belonging to at least 15 different species were col-lected during the survey. Culicoides imicola was by far the most abundant species (71.4% of total catches). The site location, and thus the vertebrate species, did not influence the species composition, which was mainly impacted by the month of collection. Surprisingly, the atmospheric pressure was the environmental param-eter the most frequently selected in seasonal models. The potential impact of this meteorological parameter along with the other selected variables is discussed. Identifying the environmental parameters driving Culicoides seasonal abundance is the first step to implementing robust Culicoides dynamic models that could later be used in transmission risk modeling.
- Published
- 2020
3. Composition and seasonality of Culicoides in three host environments in Rabat region (Morocco)
- Author
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Bourquia, Maria, primary, Garros, Claire, additional, Rakotoarivony, Ignace, additional, Boukhari, Intissar, additional, Chakrani, Moad, additional, Huber, Karine, additional, Gardès, Laëtitia, additional, Wint, William, additional, Baldet, Thierry, additional, Khallaayoune, Khakid, additional, and Balenghien, Thomas, additional
- Published
- 2020
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4. Update of the species checklist of Culicoides Latreille, 1809 biting midges (Diptera: Ceratopogonidae) of Morocco
- Author
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Garros, Claire, Rakotoarivony, Ignace, Gardes, Laetitia, Huber, Karine, Boukhari, Intissar, Delécolle, Jean-Claude, Baldet, Thierry, Mignotte, Antoine, Lhor, Youssef, Khallaayoune, Khalid, Balenghien, Thomas, and Bourquia, Maria
- Subjects
Species diversity ,Inventory ,Culicoides ,Biting midges ,Rabat region ,Morocco - Published
- 2019
5. Towards a risk mapping of Culicoides-borne diseases in Morocco
- Author
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Bourquia, Maria, Balenghien, Thomas, Rakotoarivony, Ignace, Boukhari, Intissar, Duhayon, Maxime, Baldet, Thierry, Wint, William, Khayli, M., Garros, Claire, and Khallaayoune, Khalid
- Abstract
Vector abundance maps are a necessary step in mapping the risks associated with vector-borne diseases to help target surveillance and control actions. Risk mapping requires sampling vector species at different scales, which is made difficult by heterogeneity in vector spatial distribution and dynamics. In Morocco, Culicoides were responsible for African horse sickness (AHS) outbreaks in the 1960s and late 1980s. Since 2004, Morocco is facing an endemic situation of bluetongue virus (BTV) transmission. Our study aimed to produce first abundance maps for the most abundant Culicoides species, and risk maps for BTV and AHSV, across the country. We conducted a national cross-sectional survey using a stratified sampling strategy based on eco-agronomic zoning, for which we hypothesized the homogeneity of Culicoides diversity and dynamics. Historical collection time series were used to determine maximum abundance periods based on climate zonation. This strategy allowed to plan a national sampling of Culicoides abundance during a single collection season. Collections were conducted twice a year with 144 farms trapped. Culicoides were sampled for consecutive 48h using a suction light trap. We obtained a total of 262 samples under identification process. The results so far have shown that C. imicola was the most common species (present in at least 70% of the sites), followed by C. circumscriptus (absent at mild altitudes) and C. kingi (mostly present in the south). Culicoides obsoletus/C. scoticus have been collected frequently in the country, including in the south. This highlighted the wide and unexpected spatial distribution of these species from Scandinavia to North Africa reinforcing the existence of sibling species. Other species have also been identified, such as C. puncticollis, C. newsteadi, C. catanei/C. gegjelensis (rather present in the north on the coast), C. punctatus (rare in the south), C. pulicaris/C. lupicaris and C. kurensis. Interestingly, although C. paolae is mentioned in the literature as being associated with prickly pears in the Mediterranean basin, this species was absent in many areas heavily vegetated by this fig tree. This original dataset will be used to determine the ecological factors of the abundance and distribution of Culicoides of veterinary interest in order to provide accurate mapping of vector-related risks across Morocco.
- Published
- 2018
6. How to obtain Culicoides abundance data at a national scale with one collection season in Morocco
- Author
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Bourquia, Maria, Balenghien, Thomas, Rakotoarivony, Ignace, Duhayon, Maxime, Gardes, Laëtitia, Chakrani, Moad, Boukhari, Intissar, Huber, Karine, Garros, Claire, and Khallaayoune, Khalid
- Abstract
For vector-borne diseases, producing abundance maps is a necessary step for risk mapping, which is an important tool to help focusing surveillance actions. Such as mapping requires sampling vector insects at a national/regional scale, which is quite difficult due to important heterogeneity in spatial distribution and in temporal dynamics. In Morocco, Culicoides biting midges were responsible for African horse sickness (AHS) outbreaks in the 1960s and the most recently in the late 1980s. They are also involved in the enzootic transmission of bluetongue (BT) virus since 2004. We aimed to produce first abundance maps for most abundant Culicoides species, and then risk maps for BTV and AHSV, across Morocco. In 2016, we compared species diversity in ruminant farms and in horse holding to determine if abundance maps derived from sampling in ruminant farms could be used to generate risk maps for both AHS and BT viruses. In 2017, we carried out a cross-sectional survey at the national scale. We used a stratified sampling strategy using eco-agronomic zones, with which we hypothesized homogeneity of Culicoides diversity and dynamics. We used historical collection time series to determine periods of abundance peak according to climatic zonation. This strategy allowed us to plan a national sampling of Culicoides abundance. In 2016, we found the same species in cattle and horse holdings. In addition, Culicoides paolae – reported in the literature as associated with Barbary fig trees, and Culicoides scoticus were recorded for the first time in Morocco. These records were confirmed by molecular assay. In 2017, collection campaign was conducted twice a year (from late April to June and from September to October): 144 farms were trapped during this period. At each visit, Culicoides populations were sampled for 48 consecutive hours using a light trap. A total we obtained 262 samples. Samples were currently under identification process. The next step will be to determine ecological drivers of abundance and distribution to provide accurate Culicoides mapping across Morocco.
- Published
- 2018
7. Culicoides composition in different host-environment and updated checklist in Morocco
- Author
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Bourquia, Maria, Balenghien, Thomas, Rakotoarivony, Ignace, Gardes, Laëtitia, Chakrani, Moad, Boukhari, Intissar, Huber, Karine, Garros, Claire, and Khallaayoune, Khalid
- Subjects
L73 - Maladies des animaux ,L72 - Organismes nuisibles des animaux - Abstract
In Morocco, Culicoides biting midges were responsible for African horse sickness (AHS) outbreaks in the 1960s and the most recently in the late 1980s. They are also involved in enzootic transmission of bluetongue (BT) virus since 2004. A cross-sectional survey is currently ongoing in about 150 cattle farms to produce abundance maps at the national scale for the most abundant Culicoides species. The objectives of the present study were to compare species collected in ruminant with those in horse farms and to assess potential use of abundance maps derived from sampling in ruminant farms to generate risk maps for both AHS and BT viruses. A 48-consecutive hours collections were carried out in three locations close to Rabat (33°59'20.9'' N, 6°51'07.9''W) every 15 days from May to October 2016: a cattle farm, a goat farm and a horse-ridding center. Then, we followed up Culicoides collections in the horse-ridding center during a whole year to establish precisely the Culicoides population dynamics and to link abundance with meteorological parameters. Culicoides imicola, Culicoides newsteadi, Culicoides puncticollis, and Culicoides kingi were the most abundant species in the three sites. Most of individuals, which were identified as Culicoides obsoletus/Culicoides scoticus, belong to Culicoides obsoletus s.s. Only the uncommon species, namely Culicoides longipennis, Culicoides stigma or Culicoides albihalterus, were found inconstantly depending on the collection site. In addition, Culicoides paolae – reported in the literature as associated with Barbary fig trees, was recorded for the first time in Morocco, and its identity was confirmed by molecular assay. (Texte integral)
- Published
- 2017
8. Culicoides composition in different host-environment and updated checklist in Morocco
- Author
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Balenghien, Thomas, Rakotoarivony, Ignace, Gardes, Laetitia, Chakrani, Moad, Boukhari, Intissar, Garros, Claire, Huber, Karine, Khallaayoune, Khalid, and Bourquia, Maria
- Subjects
maroc ,culicoides - Published
- 2017
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