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
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