First overview of the Culicoides Latreille (Diptera: Ceratopogonidae) livestock associated species of Reunion Island, Indian Ocean

Desvars, Amélie; Grimaud, Yannick; Guis, Hélène; Esnault, Olivier; Allene, Xavier; Gardès, Laëtitia; Balenghien, Thomas; Baldet, Thierry; Delecolle, Jean Claude; Garros, Claire

doi:10.1016/j.actatropica.2014.10.018

Cited by 14 publications

(26 citation statements)

References 61 publications

(75 reference statements)

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“…Polymerase chain reaction (PCR) conditions and cycling protocols were followed as described in Desvars et al . (). Bidirectional sequencing of PCR products was performed using the same PCR primers as for amplification.…”

Section: Specimens Collected and Identified As Stegomyia Albopicta Inmentioning

confidence: 97%

First record of Stegomyia albopicta (= Aedes albopictus) in Morocco: a major threat to public health in North Africa?

Bennouna

Balenghien

Rhaffouli

et al. 2016

Medical Vet Entomology

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The Asian tiger mosquito Stegomyia albopicta (= Aedes albopictus) (Diptera: Culicidae), native to Asian forests, is a nuisance mosquito and is responsible for the transmission of arboviruses of public health importance, such as dengue, chikungunya and Zika viruses. It has colonized parts of all continents, except Antarctica, over the past 30-40 years. However, to date, the only records of S. albopicta in North Africa refer to occasional collections in 2010 and 2014 in Algeria. In early September 2015, S. albopicta larvae and adults were collected in a district of Rabat, Morocco. Morphological identification was confirmed by molecular analysis. This is the first record of this invasive mosquito in Morocco. A national surveillance programme will be implemented in 2016 to establish its geographical distribution in Morocco and to instigate control measures to prevent the establishment of new populations and the transmission of arboviruses.

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Section: Specimens Collected and Identified As Stegomyia Albopicta Inmentioning

confidence: 97%

First record of Stegomyia albopicta (= Aedes albopictus) in Morocco: a major threat to public health in North Africa?

Bennouna

Balenghien

Rhaffouli

et al. 2016

Medical Vet Entomology

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“…Utilizing the same mitochondrial and microsatellite markers developed by Mardulyn et al [ 27 ], Jacquet et al [ 28 ] have also demonstrated the ancient existence of C. imicola in Europe and the possible routes of incursions of C. imicola into Europe from Africa. Using the mitochondrial gene marker cytochrome oxidase I ( COI ) Desvars et al [ 29 ] found a lack of genetic connectivity between C. imicola populations from Reunion Island, Spain and South Africa.…”

Section: Introductionmentioning

confidence: 99%

Delineation of the population genetic structure of Culicoides imicola in East and South Africa

et al. 2015

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BackgroundCulicoides imicola Kieffer, 1913 is the main vector of bluetongue virus (BTV) and African horse sickness virus (AHSV) in Sub-Saharan Africa. Understanding the population genetic structure of this midge and the nature of barriers to gene flow will lead to a deeper understanding of bluetongue epidemiology and more effective vector control in this region.MethodsA panel of 12 DNA microsatellite markers isolated de novo and mitochondrial DNA were utilized in a study of C. imicola populations from Africa and an outlier population from the Balearic Islands. The DNA microsatellite markers and mitochondrial DNA were also used to examine a population of closely related C. bolitinos Meiswinkel midges.ResultsThe microsatellite data suggest gene flow between Kenya and south-west Indian Ocean Islands exist while a restricted gene flow between Kenya and South Africa C. imicola populations occurs. Genetic distance correlated with geographic distance by Mantel test. The mitochondrial DNA analysis results imply that the C. imicola populations from Kenya and south-west Indian Ocean Islands (Madagascar and Mauritius) shared haplotypes while C. imicola population from South Africa possessed private haplotypes and the highest nucleotide diversity among the African populations. The Bayesian skyline plot suggested a population growth.ConclusionsThe gene flow demonstrated by this study indicates a potential risk of introduction of new BTV serotypes by wind-borne infected Culicoides into the Islands. Genetic similarity between Mauritius and South Africa may be due to translocation as a result of human-induced activities; this could impact negatively on the livestock industry. The microsatellite markers isolated in this study may be utilised to study C. bolitinos, an important vector of BTV and AHSV in Africa and identify sources of future incursions.Electronic supplementary materialThe online version of this article (doi:10.1186/s13071-015-1277-4) contains supplementary material, which is available to authorized users.

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“…Cattle sentinel herds recorded high sero-prevalences and sero-incidences of antibodies against EHDV in the selected Highveld populations in Zimbabwe. Antibodies against EHDV were detected in 64% of calves tested in Kenya (Toye et al 2013 ) and in 38% of cattle and sheep sampled on Reunion Island (Desvars et al 2015 ). The low sero-prevalence and sero-incidence rates against this disease recorded in sheep suggest that cattle, which are likely to be the preferred hosts of Culicoides vector species, as in other countries, may be a more natural host of this virus in Zimbabwe, compared to sheep.…”

Section: Discussionmentioning

confidence: 99%

“…While this serotype has not been previously reported in Zimbabwe, Coetzee et al ( 2012 ) reported that serotypes 1–6 are commonly encountered in neighbouring South Africa. Sghaier et al ( 2017 ) recently identified serotype 3 in Tunisia while Desvars et al ( 2015 ) attributed BTV-3 as the cause for a clinical outbreak in Merino sheep on Reunion Island. Previous studies have identified BTV serotypes 1, 2, 8, 10, 11, 12, 15, 16 and 18 from Culicoides vectors in Zimbabwe, although these studies were also restricted to samples from the Highveld region (Blackburn et al 1985 ; Gordon et al 2015 ).…”

Section: Discussionmentioning

confidence: 99%

A serosurvey of bluetongue and epizootic haemorrhagic disease in a convenience sample of sheep and cattle herds in Zimbabwe

Gordon

Bolwell

Rogers

et al. 2017

Onderstepoort j. vet. res.

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A convenience sample of sheep and cattle herds around the cities of Harare, Kwekwe and Bulawayo, located in the Highveld region of Zimbabwe, was used to estimate the sero-prevalence and sero-incidence of bluetongue virus (BTV) and epizootic haemorrhagic disease virus (EHDV) antibodies. A competitive enzyme-linked immunosorbent assay was used to identify serum antibodies against BTV and EHDV across three rainy seasons. The median sero-prevalence of BTV and EHDV antibodies in cattle was 62% (interquartile range [IQR]: 30–89) and 56% (IQR: 5–77), respectively. In sheep, the median sero-prevalence of BTV and EHDV was 41% (IQR: 19–63) and 0% (IQR: 0–21), respectively. Median sero-incidences of BTV and EHDV antibodies in cattle of 43% (IQR: 22–67) and 27% (IQR: 9–57) respectively were recorded. The median sero-incidence of BTV in sheep was 14% (IQR: 6–23). Based on these preliminary findings, animal health workers in Zimbabwe should continue to monitor the exposure rates of cattle and sheep to BTV and consider the possibility of strains emerging with increased pathogenicity. There are no previous published reports of antibodies against EHDV in Zimbabwe so the possibility of epizootic haemorrhagic disease existing in domestic livestock should now be considered by Zimbabwean animal health officials. Seroconversions to BTV and EHDV occurred predominantly at the end of each rainy season (March and April), which generally corresponds to high numbers of the Culicoides vectors. BTV isolations were made from three individual cows in two of the sentinel herds and all three were identified as serotype 3. This is the first time BTV serotype 3 has been recorded in Zimbabwe, although its presence in neighbouring South Africa is well documented.

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First overview of the Culicoides Latreille (Diptera: Ceratopogonidae) livestock associated species of Reunion Island, Indian Ocean

Cited by 14 publications

References 61 publications

First record of Stegomyia albopicta (= Aedes albopictus) in Morocco: a major threat to public health in North Africa?

First record of Stegomyia albopicta (= Aedes albopictus) in Morocco: a major threat to public health in North Africa?

Delineation of the population genetic structure of Culicoides imicola in East and South Africa

A serosurvey of bluetongue and epizootic haemorrhagic disease in a convenience sample of sheep and cattle herds in Zimbabwe

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