BACKGROUND Dengue virus is spread in tropical areas of the world and is the causative agent of dengue fever and dengue hemorrhagic fever. It is horizontally transmitted to humans by infected Aedes mosquitoes, but it is also able to be vertically or transovarially transmitted to insect progeny. OBJECTIVE In this work, we analyzed the vertical transmission of dengue virus in Aedes aegypti mosqu...

Several species of the family Culicidae are important vectors of diseases in humans and other animals. Immature stages are filter-feeders of organic particulate matter and microorganisms. Studies on microbial diversity can contribute to the discovery of new substances that can be used in the pharmaceutical industry for food or for biological control. The aim of this study was to isolate and ide...

The microbial control agents Bacillus thuringiensis (H-14) and B. sphaericus were evaluated in laboratory and field against Psorophora columbiae. Bacillus sphaericus strain 2362 was also tested in the field against Aedes melanimon. Psorophora columbiae was slightly more susceptible than Culex quinquefasciatus to active strains of B. sphaericus. The LC90 for active strains ranged from 0.013 to 0...

Biolarvicides, based on mosquitocidal toxins of certain strains of Bacillus sphaericus and Bacillus thuringiensis var israelensis H-14 (Bti) are highly effective against mosquito larvae at very low doses and safe to other non-target organisms. During past two decades various biolarvicide formulations produced in India and abroad have been tested at Malaria Research Centre and some formulations ...

The best method for preventing mosquito-borne diseases is to reduce the mosquito population. goal of current study was assess larvicidal efficacy fruit extract Diospyros kaki against Aedes albopictus larvae and non-target organisms. Bioassays were performed with crude acetone solvent extracts on Ae. Albopictus larvae. Additionally, studies composition phytochemicals conducted. Through use Log-p...

On August 2, 1985, numerous adults and larvae of an unknown species of Aedes were collected from several widely separated tire dumps, in and around the city of Houston, Texas. Specimens sent to Dr. Y.-M. Huang at the U. S. National Museum, were identified as Aedes albopictru (Skuse), a container-breeding species, indigenous to the Oriental and Australian regions. Aedes albopictu.r has been coll...

BACKGROUND & OBJECTIVES The district of Thiruvananthapuram reports the maximum number of cases of dengue in the state of Kerala. To determine the larval diversity, density and breeding site preferences of Aedes mosquitoes, during pre-monsoon and monsoon periods in urban and rural areas of Thiruvananthapuram district. METHODS Based on the daily reports of dengue cases, 70 clusters were identif...

Adulticidal and larvicidal performances of a water-based pyrethroid microemulsion Pesguard PS 102 (AI d-allethrin and d-phenothrin, both at 5.0% w/w) and Vectobac 12AS, an aqua-suspension Bacillus thuringiensis israelensis (B.t.i.) formulation (AI 1,200 ITU/mg) were assessed against mosquitoes Aedes aegypti, Aedes albopictus, and Culex quinquefasciatus using a Leco ULV Fog Generator Model 1600 ...