Transcript DISTRIBUTION OF CULICOIDES IMICOLA AND C. BOLITINOS

DISTRIBUTION OF CULICOIDES
IMICOLA AND C. BOLITINOS
(DIPTERA: CERATOPOGONIDAE)
IN SOUTH AFRICA
Labuschagne K1,2 & Scholtz CH2
Importance
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Nuisance, Economic, Medical, Veterinary
Viruses, Protozoa, Nematodes
African horse sickness (AHS)
Bluetongue (BT)
History
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OVI
Rene du Toit, 1943
C. imicola, 1980’s
1998 Clarens
C. bolitinos
Other Culicoides species
Laboratory infected
Differences
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C. imicola
Moist soils
Wide spread
Rains
• C. bolitinos
• Cattle, buffalo, wildebeest dung
• Cooler areas
Maps generation
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Culicoides species database
20 years
500 sites
Distribution
Average collection per site
ARCGIS
Conclusions
• Maps indicate
– Distribution overlap
– Area of dominance differs
• C. bolitinos (Eastern Free State, KwaZulu Natal,
Limpopo)
• C. imicola (Gauteng, Mpumalanga, KZN, Western Cape)
– C. imicola 500 000 specimens
– C. bolitinos 10 000 specimens
– Areas under surveyed
– Link to temperature, rainfall
Acknowledgements
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ARC-OVI
Funding bodies (EU, NDA)
UP Zoology and Entomology Department
ESRI
Farmers and personnel
Veterinary services (State vets, AHT’s)
Private vets
Rudy Meiswinkel