Comparison of the efficiency of five suction light traps under field conditions in South Africa for the collection of Culicoides species

Venter, Gert J.; Labuschagne, Karien; Hermanides, K.G.; Boikanyo, Solomon N.B.; Majatladi, D.; Morey, Liesl

doi:10.1016/j.vetpar.2009.08.020

Cited by 97 publications

(93 citation statements)

References 33 publications

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“…Despite being an artificial system and the great variety of factors that can influence light trap results (Nelson and Bellamy, 1971;Murray, 1987;Bellis and Reid, 1996;Garcia-Saenz et al, 2011) it has become a standard tool for the collection of Culicoides midges. In a comparative study in South Africa, the 220 V down-draught Onderstepoort black-light trap was shown to collect significantly more Culicoides midges under field conditions than the Rieb, mini-CDC, Pirbright and BG-sentinel light traps (Venter et al, 2009a). Taking into account the more powerful light source and fan of the 220 V Onderstepoort trap, compared to that of the others, this result was not surprising.…”

Section: Introductionmentioning

confidence: 91%

“…Downdraught 220 V Onderstepoort black-light traps (Venter et al, 2009a) The fourth study area was at least 600 m away from the third. Here, the traps were operated in a roofed service area between five camps which housed five to ten horses at night.…”

Section: Collection Sitesmentioning

confidence: 99%

“…Traps were hung 1.4 m above ground level and as close to the host animals as possible. Insects were collected into water to which 0.5% 'Savlon' (Johnson & Johnson, South Africa) (contains Clorhexidine gluconate 0.3 g/100 ml and Cetrimide 3.0 g/100 ml) antiseptic had been added as described by Venter et al, 2009a. Traps were run from dusk to dawn and in the morning the insects were transferred to 80% ethanol and stored until analysed.…”

Section: Collection Proceduresmentioning

confidence: 99%

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The attraction range of the Onderstepoort 220V light trap for Culicoides biting midges as determined under South African field conditions

Venter

Majatladi

Labuschagne

et al. 2012

Veterinary Parasitology

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Despite some limitations suction light traps are the primary tool used for the collection of Culicoides species (Diptera: Ceratopogonidae). The range of attraction of the Onderstepoort light trap is not known but an insight into the range of a trap will determine where the trap must be positioned relative to the hosts present, possible breeding sites and environmental structures in the trapping vicinity. It will therefore contribute to a more meaningful interpretation and comparison of results between trapping events. In the present study the number of Culicoides midges collected in a single trap was compared to those of traps made with an additional trap respectively 1 m, 4 m and 8.5 m away from the first. Treatments between sites were rotated in three replicates of a 4x4 Latin square design. While interactions were found in traps 4 m apart no statistically significant interactions were found when they were 8.5 m apart. The range of attraction, indicated by the interaction between two traps, will be between 2 m and 4 m. In interpreting light trap results the limitations of this collection method needs to be taken into consideration.2

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Section: Introductionmentioning

confidence: 91%

Section: Collection Sitesmentioning

confidence: 99%

Section: Collection Proceduresmentioning

confidence: 99%

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The attraction range of the Onderstepoort 220V light trap for Culicoides biting midges as determined under South African field conditions

Venter

Majatladi

Labuschagne

et al. 2012

Veterinary Parasitology

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“…The Onderstepoort trap is described in detail by Venter et al, 2009. Each light trap was fitted with white polyester mesh (surface area ±0.07 m 2 ; mesh size 2-3 mm), surrounding the light source. Under normal trapping conditions the purpose of the mesh is to exclude moths and bigger insects from the collections (Goffredo and Meiswinkel, 2004).…”

Section: Test Proceduresmentioning

confidence: 99%

“…To minimise interference between light traps, the 5 collecting sites were located at least 15 m apart. Light trap operating procedure was conducted as described by Venter et al, 2009. Black or UV light is known to be more effective than white light for the attraction and collection of Culicoides midges (Wieser-Schimpf et al, 1990) including C. imicola (Venter and Hermanides, 2006), the most abundant vector of BTV and AHSV in South Africa. The strong attraction of the black light source renders the Onderstepoort light trap less useful for the evaluation of repellents against Culicoides midges .…”

Section: Test Proceduresmentioning

confidence: 99%

The repellent effect of organic fatty acids on Culicoides midges as determined with suction light traps in South Africa

Venter

Labuschagne

Boikanyo

et al. 2011

Veterinary Parasitology

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The efficacy of a 15% (w/w) mixture of octanoic, nonanoic and decanoic acids in light mineral oil to repel Culicoides biting midges (Diptera; Ceratopogonidae) was determined in three replicates of a 4 x 4 Latin square design under South African field conditions. The fatty acids were applied to ±0.07 m 2 polyester meshes with a mesh size 2-3 mm fitted to 220 V 8 W Onderstepoort downdraught light traps. To reduce the relatively strong attraction of the light trap, the black light tubes in the Onderstepoort trap were replaced with 8 W 23 cm white light tubes. The traps were operatingf overnight next to cattle. Two traps treated with the mixture of fatty acids collected 1.7 times fewer midges than two untreated traps. Although this mixture of fatty acids had shown a repellent effect against a number of blood-feeding insects this is the first indication that it also has a significant repellent effect against Culicoides species and especially Culicoides (Avaritia) imicola Kieffer when applied to polyester mesh.2

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Monitoring bluetongue virus vectors in Andalusia (SW Europe): Culicoides species composition and factors affecting capture rates of the biting midge Culicoides imicola

et al. 2012

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In this work, we summarize the results of captures of Culicoides species in Andalusia (S Spain) during 2007-2008. Four out of the 15 midge species-Culicoides imicola, Culicoides obsoletus complex, Culicoides pulicaris complex, and Culicoides nubeculosus-accounted for 80.7 % of captures (n = 68,190). Captures were seasonal and mostly occurred in May-November. The overall number of Culicoides specimens captured and the mean number of caught per trap were higher in 2007. We used an information-theoretic approach to analyze whether environmental factors (e.g., weather, altitude above the sea level, distance of the trap from the ground, distance to animals, and land use) affected C. imicola capture probability and success. Mean temperature and rainfall (both integrated into the Gaussen index), distance of traps to host animals, and trap height above the ground were the main factors explaining variance in capture rates in the Bluetongue Entomologic Surveillance Andalusian Program (BESAP). However, all of these patterns strongly varied among traps. As previously remarked by other authors, standardized capture methods and protocols for trap use are needed to ensure that results obtained in different geographical areas and/or periods are comparable.

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Comparison of the efficiency of five suction light traps under field conditions in South Africa for the collection of Culicoides species

Cited by 97 publications

References 33 publications

The attraction range of the Onderstepoort 220V light trap for Culicoides biting midges as determined under South African field conditions

The attraction range of the Onderstepoort 220V light trap for Culicoides biting midges as determined under South African field conditions

The repellent effect of organic fatty acids on Culicoides midges as determined with suction light traps in South Africa

Monitoring bluetongue virus vectors in Andalusia (SW Europe): Culicoides species composition and factors affecting capture rates of the biting midge Culicoides imicola

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