Vector control remains the most effective approach to prevent dengue, chikungunya and Zika arboviruses transmission. Conventional insecticides have historically failed Aedes aegypti mosquito due acquired resistance, environmental impact toxicity. This study evaluated potential of garlic oil as a biopesticide against eggs, larvae, pupae adult forms Ae. aegypti, in accordance with World Health Or...

Pyrethroid resistance is envisioned to be a major problem for the vector control program since, at present, there are no suitable chemical substitutes for pyrethroids. Cross-resistance to knockdown agents, which are mainly used in mosquito coils and related products as spatial repellents, is the most serious concern. Since cross-resistance is a global phenomenon, we have started to monitor the ...

Aims: To observe the morphology of the larva of A. aegypti in detail and to evaluate their morphometry. Place and Duration of Study: Place – St. John’s College, Agra. Duration – June, 2011 to May, 2012. Methodology: Morphology of larval head, antennae, compound eyes, median brush (palatum), lateral brush; neck; thorax; abdomen, comb spine, siphon, siphon teeth and anal papillae were observed an...

Aedes aegypti mosquitoes are the primary transmitters of dengue fever, urban yellow fever, and chikungunya viruses. This mosquito has developed resistance to the insecticides currently used to control their populations. These chemical insecticides are harmful to the environment and can have negative effects on human health. Rhamnolipids are environmentally compatible biological surfactants, but...

We present data on the efficacy of Mesocyclops longisetus as a biocontrol agent in controlling Aedes aegypti larvae in catch basins in Cali, Colombia. Additionally, we determined some of the features that facilitated the establishment of the copepods in catch basins. Between June 1999 and February 2000, 201 catch basins were treated with an average of 500 adult copepods. The copepods had establ...

Aedes aegypti larvae ingest several kinds of microorganisms. In spite of studies regarding mosquito digestion, little is known about the nutritional utilization of ingested cells by larvae. We investigated the effects of using yeasts as the sole nutrient source for A. aegypti larvae. We also assessed the role of beta-1,3-glucanases in digestion of live yeast cells. Beta-1,3-glucanases are enzym...

To determine the potential role of vertical transmission in Zika virus expansion, we evaluated larval pools of perorally infected Aedes aegypti and Ae. albopictus adult female mosquitoes; ≈1/84 larvae tested were Zika virus-positive; and rates varied among mosquito populations. Thus, vertical transmission may play a role in Zika virus spread and maintenance.

Residual effectiveness of plaster matrix formulations of temephos and temephos plus an emulsifier (Atlox 3409F) were evaluated against Aedes aegypti larvae during an 8-wk period. Formulations of 2% and 5% (AI) Atlox with 5% (AI) temephos yielded 100% larval mortality for 8 wk. A 5% temephos formulation without the addition of the emulsifier produced 100% larval mortality through only 1 wk.

Bacillus thuringiensis is an important microbial control agent against insect pests. The draft genome sequence of the Brazilian strain BR58 described here contains the insecticidal genes cry4A, cry4B, cry10A, cry11A, cry60A, cry60B, and cyt1A, which show toxicity to both Aedes aegypti and Hypothenemus hampei larvae.