Evaluation and improvement of sticky traps as monitoring tools for Glossina austeni and G. brevipalpis (Diptera: Glossinidae) in north-eastern KwaZulu-Natal, South Africa
Bulletin of Entomological Research
Entomology Division, ARC-Onderstepoort Veterinary Institute, Private Bag X5, Onderstepoort 0110, South Africa; Department of Veterinary Tropical Diseases, University of Pretoria, South Africa
The attractiveness of various colours, colour combinations and sizes of sticky traps of the 3-dimensional trap (3DT), cross-shaped target (XT), rectangular screen (RT) and monopanels were evaluated for their efficacy to capture Glossina austeni Newstead and G. brevipalpis Newstead in north-eastern KwaZulu-Natal, South Africa. The 3-dimensional shapes of the XT and 3DT in light blue (l.blue) and white were significantly (ca. 3.1-6.9 times) better than the RT for G. austeni. On bicoloured XTs, G. austeni landed preferentially on electric blue (e.blue) (58%) and black (63%) surfaces when used with white; while for G. brevipalpis, significantly more landed on e.blue (60-66%) surfaces when used with l.blue, black or white surfaces. Increased trap size increased the catches of G. brevipalpis females and both sexes of G. austeni significantly. Temoocid and polybutene sticky materials were equally effective and remained durable for 2-3 weeks. The glossy shine of trap surfaces did not have any significant effect on the attraction and landing responses of the two species. The overall trap efficiency of the e.blue/l.blue XT was 23% for G. brevipalpis and 28% for G. austeni, and that of the e.blue/black XT was 16% for G. brevipalpis and 51% for G. austeni. Larger monopanels, painted e.blue/black on both sides, increased the catches of G. austeni females significantly by up to four times compared to the standard e.blue/black XT. This monopanel would be recommended for use as a simple and cost effective survey tool for both species in South Africa. © 2007 Cambridge University Press.
adhesive agent; biological survey; capture method; comparative study; cost; efficiency measurement; monitoring; trap (equipment); tsetse fly; animal; article; color; environmental monitoring; equipment design; insect control; methodology; South Africa; tsetse fly; Adhesives; Animals; Color; Environmental Monitoring; Equipment Design; Insect Control; South Africa; Tsetse Flies; Africa; KwaZulu-Natal; South Africa; Southern Africa; Sub-Saharan Africa; Diptera; Glossina (genus); Glossina austeni; Glossina brevipalpis; Glossinidae