Spatial dispersal of Aedes albopictus mosquitoes captured by the modified sticky ovitrap in Selangor, Malaysia
Document Type
Article
Publication Date
1-1-2022
Abstract
Dengue is a major mosquito-borne disease in many tropical and sub-tropical countries worldwide, with entomological surveillance and control activities as the key management approaches. This study aimed to explore the spatial dispersal of the vector Aedes albopictus, captured by the modified sticky ovitrap (MSO) in residential areas with low-rise buildings in Selangor, Malaysia. Distribution maps were created and shown as temporally distinguished classes based on hotspot analysis by Getis-Ord; spatial autocorrelation assessed by semivariograms using the exponential Kernel function; and universal Kriging showing areas with estimated high and low vector densities. Distribution, hotspot and interpolated maps were analysed based on the total number of mosquitoes by month and week. All maps in the present study were generated and visualised in ArcMap. Spatial autocorrelation ofAe. albopictus based on the monthly occurrence ofAe. albopictus was found in March, April, October, November and December 2018, and when based on the weekly numbers, in weeks 1, 2, 3, 5, 7, 12, 14, 25, 26, 27, 31, 33, 42, 49 and 52. Semivariograms, based on the monthly and weekly numbers of Ae. albopictus, indicated spatial autocorrelation of the species extending between 50 and 70 m. The mosquito density maps reported in this study may provide beneficial information to facilitate implementation of more efficient entomological control activities.
Keywords
Spatial dispersal, Aedes albopictus, Modified sticky ovit-rap, Malaysia
Divisions
Geography,Dentistry,Parasit,deputyacademic
Funders
Postgraduate Research [Grant No: PG1602015B],UM Cares [Grant No: RU013-2017P],Faculty Research [Grant No: GPF013C-2018]
Publication Title
Geospatial Health
Volume
17
Issue
1
Publisher Location
FAC VET MED, DEP PATHOLOGY & ANIMAL HEALTH, VET PARASITOLOGY, VIA DELLA VETERINARIA 1, NAPLES, 80137, ITALY