A5044927194- Parasitic Diseases Research and Treatment
- Mosquito-borne diseases and control
- Freshwater macroinvertebrate diversity and ecology
- Insect symbiosis and bacterial influences
- Viral Infections and Vectors
- Parasite Biology and Host Interactions
- Vector-borne infectious diseases
- Malaria Research and Control
- Insect Pest Control Strategies
- Dengue and Mosquito Control Research
- Forensic Entomology and Diptera Studies
- Insect behavior and control techniques
- Insect and Pesticide Research
- Yersinia bacterium, plague, ectoparasites research
- Vector-Borne Animal Diseases
- Bartonella species infections research
- Helminth infection and control
- Parasites and Host Interactions
- Aquatic Invertebrate Ecology and Behavior
- Rabies epidemiology and control
- Environmental DNA in Biodiversity Studies
- Parasitic Infections and Diagnostics
- Insect Resistance and Genetics
- Zoonotic diseases and public health
- Diptera species taxonomy and behavior
University of Malaya
2016-2025
University Malaya Medical Centre
2016-2024
Hospital Sungai Buloh
2023
Universiti Teknologi MARA
2023
Laboratoire Physiologie Cellulaire & Végétale
2015
The morphotaxonomy of Rhipicephalus microplus complex has been challenged in the last few years and prompted many biologists to adopt a DNA-based method for distinguishing members this group. In present study, we used mitochondrial DNA analysis characterise genetic assemblages, population structure dispersal pattern R. from Southeast Asia, region where species originated. A phylogeographic inferred 16S rRNA cytochrome oxidase subunit I (COI) genes was performed with five populations...
Simulium (Gomphostilbia) marosense sp. nov. is described based on adults, pupae and mature larvae from Sulawesi, Indonesia. This new species placed in the duolongum subgroup of S. batoense species-group, representing ninth member for Sulawesi. characterized by a narrow female frons pupal gill with eight filaments, which two filaments ventral pair are 1.9-3.0 times as long six other filaments. Taxonomic notes provided to distinguish this related species.
Up to three nominal species of the cyprinid fish genus Poropuntius (i.e. P. deauratus [Valenciennes in Cuvier Valenciennes 1842], normani [Smith 1931], and smedleyi [de Beaufort 1933]) have been reported occur Peninsular Malaysian freshwater ecosystems. However, low morphological differentiation among causes confusion it is still unknown how many valid this region. The goal study review taxonomic status Malaysia by using molecular characters. Principal Component Analysis (PCA) on a...
Simulium (Gomphostilbia) lemborense sp. nov. is described based on adults, pupae and mature larvae from Flores, in the eastern part of Sunda Archipelago, Indonesia. This new species placed batoense species-group subgenus Gomphostilbia Enderlein, representing most distribution record for group. characterized by a narrow female frons pupal gill with eight filaments, which two filaments ventral pair are three to four times as long six other filaments. Taxonomic notes provided distinguish this...
Preimaginal black flies (Diptera: Simuliidae) are important components of the stream ecosystem. However, there has been limited research undertaken on vertical distribution preimaginal and their associated ecological factors. Stream conditions generally variable along altitudinal gradient. Therefore, we conducted an in-depth entomological survey to investigate simuliid pattern gradient in Peninsular Malaysia. A total 432 collections were performed this study (24 samplings at each 18...
Abstract Background The endosymbiont bacterium Wolbachia is maternally inherited and naturally infects some filarial nematodes a diverse range of arthropods, including mosquito vectors responsible for disease transmission in humans. Previously, it has been found infecting most species but absent Anopheles Aedes aegypti . However, recently these two were to be infected with We report here the extent infections field-collected mosquitoes from Malaysia based on PCR amplification wsp 16S rRNA...
Abstract A potentially novel actinobacterium isolated from forest soil, Streptomyces sp. KSF103 was evaluated for its insecticidal effect against several mosquito species namely Aedes aegypti , albopictus Anopheles cracens and Culex quinquefasciatus . Mosquito larvae adults were exposed to various concentrations of the ethyl acetate (EA) extract 24 h. Considerable mortality evident after EA treatment all four important vector mosquitoes. Larvicidal activity resulted in LC 50 at 0.045 mg/mL...
Abstract A total of 68 adult hard ticks were recovered from 5 cases infestation involving pet rabbits (Oryctolagus cuniculus domesticus) in Malaysia. The later identified as the tropical brown dog tick, Rhipicephalus linnaei (Audouin, 1826). Pathogen screening showed 2 out Rh. (2.94% infection rate) positive for Rickettsia. BLAST analyses revealed that both samples identical to Rickettsia conorii subsp. raoultii. This paper reports first detection R. raoultii linnaei, also highlighting...
Abstract A multi‐locus approach was used to examine the DNA sequences of 10 nominal species blackfly in S imulium subgenus Gomphostilbia ( D iptera: imuliidae) M alaysia. Molecular data were acquired from partial mitochondria‐encoded cytochrome c oxidase subunit I COI ), 12S rRNA and 16S genes, nuclear‐encoded 18S 28S genes. No single gene, nor concatenated gene set, resolved all or relationships. However, morphologically established supported by at least one gene. The sequence analysis...
The biodiversity of black flies (Diptera: Simuliidae), which are biting insects medical and veterinary importance, is strikingly high in Southeast Asian countries, such as Indonesia, Malaysia, Philippines Thailand. In 2013, we began to explore the fauna Vietnam, has so far been poorly studied. this monograph, wealth Vietnam also confirmed on basis results our recent investigations, though limited five provinces country. Morphotaxonomic studies obtained from Sapa, Lao Cai Province, northern...
Abstract Background Haemonchus contortus and Trichostrongylus spp. are reported to be the most prevalent highly pathogenic parasites in livestock, particularly small ruminants. However, routine conventional tool used Malaysia could not differentiate species accurately therefore limiting understanding of co-infections between these two genera among livestock Malaysia. This study is first attempt identify strongylids veterinary importance (i.e., H. spp.) by amplification sequencing Internal...
Background There has been no comprehensive study on biochemical characterization of insecticide resistance mechanisms in field populations Malaysian Culex quinquefasciatus. To fill this void the literature, a nationwide investigation was performed to quantify enzyme activities, thereby attempting characterize potential Cx. quinquefasciatus residential areas Malaysia. Methodology/Principal Findings from 14 across 13 states and one federal territory were subjected esterases, mixed function...
Abstract Perspicuous assessments of taxonomic boundaries and discovery cryptic taxa are paramount importance in interpreting ecological evolutionary phenomena among black flies (Simuliidae) combating associated vector-borne diseases. Simulium tani Takaoka & Davies is the largest perhaps most taxonomically challenging species complex Oriental Region. We use a DNA sequence-based method to delineate currently recognized chromosomal morphological S. on Southeast Asian mainland Taiwan, while...
Background Ticks, as critical vectors of a variety pathogens, pose significant public health challenge globally. In Southeast Asia (SEA), ticks are responsible for transmitting diverse array pathogens affecting humans and animals. The geographical ecological diversity SEA provides unique environment that supports wide range tick species, which complicates the management study tick-borne diseases (TBDs). Methodology/principal findings This article synthesizes from first international...
A nationwide investigation was carried out to determine the current susceptibility status of Culex quinquefasciatus Say populations against four active ingredients representing major insecticide classes: DDT, propoxur, malathion, and permethrin. Across 14 study sites, both larval adult bioassays exhibited dissimilar trends in susceptibility. correlation between propoxur malathion resistance permethrin found. The results obtained from this provide baseline information for vector control...
The population genetic structure of Simulium tani was inferred from mitochondria-encoded sequences cytochrome c oxidase subunits I (COI) and II (COII) along an elevational gradient in Cameron Highlands, Malaysia. A statistical parsimony network 71 individuals revealed haplotypes the COI gene 43 COII gene; concatenated genes haplotypes. High levels diversity but low differentiation were observed among populations S. at five elevations. degree diversity, however, not accordance with...
Canine babesiosis is an emerging tick-borne disease with a worldwide distribution, including Malaysia. While the prevalence of Babesia has been documented from dogs in Malaysia, occurrence relatively little studied their tick vectors. Accordingly, total 240 and 140 Rhipicephalus sanguineus sensu lato (s.l.) (Acari: Ixodidae) ticks Malaysia were molecularly screened for presence protozoa present study. gibsoni was only detected (1.4%), whereas vogeli both (1.4%) (2.1%). This study highlights...
Aedes aegypti (L.) (Diptera: Culicidae) is the primary vector of several arthropod-borne viral infectious diseases globally. Relentless control efforts are performed to curtail disease transmissions, insecticides remain as first line defense in Indonesia. With a dearth publication on efficacy mosquito coil Indonesia, this report related despite its common use households. Ae. mosquitoes were sampled from nine regencies Indonesia and tested using glass-chamber method against three commercially...