A novel vehicle-mounted sticky trap; an effective sampling tool for savannah tsetse flies Glossina morsitans morsitans Westwood and Glossina morsitans centralis Machado
Autor: | Njelembo J. Mbewe, Abdullahi Ahmed Yusuf, Catherine L. Sole, Christian Walter Werner Pirk, Jackson Muyobela |
---|---|
Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
Male
0301 basic medicine Veterinary medicine Glossina morsitans RC955-962 Disease Vectors Medical Conditions 0302 clinical medicine Zoonoses Arctic medicine. Tropical medicine Medicine and Health Sciences Materials Protozoans biology Organic Compounds Experimental Design Eukaryota Sampling (statistics) Equipment Design Butanones Insects Chemistry Motor Vehicles Infectious Diseases Research Design Physical Sciences Female Glossina Public aspects of medicine RA1-1270 Research Article Neglected Tropical Diseases Trypanosoma 2019-20 coronavirus outbreak Glossina Arthropoda Tsetse Flies Coronavirus disease 2019 (COVID-19) Tsetse Fly Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Materials Science 030231 tropical medicine Zambia Research and Analysis Methods African Trypanosomiasis 03 medical and health sciences Trypanosomiasis Adhesives Parasitic Diseases Animals Protozoan Infections Organic Chemistry Chemical Compounds Organisms Public Health Environmental and Occupational Health Biology and Life Sciences Tsetse fly Tropical Diseases biology.organism_classification Invertebrates Parasitic Protozoans Insect Vectors Species Interactions 030104 developmental biology Zoology Entomology |
Zdroj: | PLoS Neglected Tropical Diseases, Vol 15, Iss 7, p e0009620 (2021) PLoS Neglected Tropical Diseases |
ISSN: | 1935-2735 1935-2727 |
Popis: | Background Black screen fly round (BFR) is a mobile sampling method for Glossina morsitans. This technique relies on the ability of operator(s) to capture flies landing on the screen with hand nets. In this study, we aimed to evaluate a vehicle-mounted sticky panel trap (VST) that is independent of the operator’s ability to capture flies against BFR, for effective and rapid sampling of G. m. morsitans Westwood and G. m. centralis Machado. We also determined the influence of the VST colour (all-blue, all-black or 1:1 blue-black), orientation and presence of odour attractants on tsetse catch. Methodology/Principal findings Using randomised block design experiments conducted in Zambia, we compared and modelled the number of tsetse flies caught in the treatment arms using negative binomial regression. There were no significant differences in the catch indices of the three colour designs and for in-line or transversely oriented panels for both subspecies (P > 0.05). When baited with butanone and 1-octen-3-ol, VST caught 1.38 (1.11–1.72; P < 0.01) times more G. m. centralis flies than the un-baited trap. Attractants did not significantly increase the VST catch index for G. m. morsitans (P > 0.05). Overall, the VST caught 2.42 (1.91–3.10; P < 0.001) and 2.60 (1.50–3.21; P < 0.001) times more G. m. centralis and G. m. morsitans respectively, than the BFR. The VST and BFR took 10 and 35 min respectively to cover a 1 km transect. Conclusion/Significance The VST is several times more effective for sampling G. m. morsitans and G. m. centralis than the BFR and we recommend its use as an alternative sampling tool. Author summary The fly round is a mobile method used to sample G. m. morsitans and G. m. centralis, important vectors of human and animal African trypanosomiasis. However, its effectiveness is largely dependent on the skill and ability of the operator(s) to catch flies using a hand net. Here, we report the evaluation of an alternative mobile sampling tool, the vehicle-mounted sticky trap (VST) which is independent of operator skill and ability to catch flies. We show that VST is more effective in catching both female and male G. m. morsitans and G. m. centralis compared to the black-screen fly round (BFR). Furthermore, VST covered the same distance of BFR in a much shorter time. This study provides a basis for the use of VST in large scale sampling of G. morsitans to determine its geographical limit, a critical aspect in the planning of vector control strategies and interventions. |
Databáze: | OpenAIRE |
Externí odkaz: |