background: dengue fever is a serious public health issue in pakistan for many years. globally plants have been reported to contain compounds with insecticidal properties. these properties have been demonstrated more recently on the larval stages of mosquitoes. therefore, citrus cultivar seeds were evaluated for larvicidal potential against the primary dengue vector aedes aegypti . methods: ext...

Dengue is a vector-borne disease caused by dengue virus. According to the recent report of CDC that one-third population of the world are at high risk with Dengue fever. The prevalence of the dengue hemorrhagic fever was found more in tropical and sub-tropical regions of the world. Aedes mosquitoes was reported as the main cause of transmission of dengue virus. So the current study was planned ...

background: trypsin modulating oostatic factor (tmof) terminates trypsin biosynthesis in adult and larval mos­quito gut. it will inhibit the growth and development of mosquito larvae feeding on it resulting in death by starvation. the objective of this study is to determine the effective dose of pichia-tmof and the combination of pichia-tmof with bacillus thuringiensi s ( bt) as larvicide on ae...

background: bifenthrin and acorus calamus linn extract were evaluated against dengue vectors in the laboratory. methods: both bifenthrin and acorus calamus linn crude hexane extract were bioassayed against the adults and larval stages of dengue vectors aedes aegypti l. and aedes albopictus(skuse) in the laboratory. results: the a. calamus crude hexane extract exhibited a larvicidal activity aga...

in southeast asia, aedes aegypti (l.) has been incriminated as principal vector of dengue viruses and ae. albopictus as the secondary vector of dengue fever. therefore, the aim of this study was to investigate the effectiveness of three for-mula tions of pyrethrin derived from tanacetum cinerariaefolium against the dengue/dengue haemorrhagic fever vectors aedes aegypti and ae. albopictus in the...

background: dengue is amongst the most serious mosquito-borne infectious disease with hot spots in tropical and subtropical parts of the world. unfortunately, no licensed vaccine for the disease is currently available in medicine markets. the only option available is the management of dengue vector mosquito, aedes aegypti (diptera: culicidae). method: predatory potential of five odonate nymphs ...

OBJECTIVE To evaluate the monthly frequency of larvae and pupae of Aedes albopictus, Aedes aegypti and other mosquitoe species in tires, and the influence of environmental factors on that. METHODS The immature stages of mosquitoes were collected monthly from four tires in the municipality of Nova Iguaçu, Brazil, from November 1997 to October 1998. The following variables were measured: rainfa...

To investigate the effect of NaCl concentration on the survival of Aedes aegypti larvae, samples of Aedes aegypti larvae were collected from some discarded container, artificial pool from the urban area of Wahga town and exposed to 10%, 15% and 20% of NaCl concentration. The results of this study suggest that NaCl higher concentration can be used in a more human non-lethal chemical approach and...

background : considering the disadvantages of chemical insecticides, we aimed to evaluate vorticella parasites for control of mosquito larvae of anopheles stephensi and aedes aegypti at different larval stages. methods: vorticella sp infected mosquito larvae were crushed in the 0.85% saline and homogenized well to get vorti­cella in suspension. the effects of vorticella sp infections on larval ...

Background: Aedes aegypti is the main vector of the yellow fever and dengue virus. This mosquito has become the major indirect cause of morbidity and mortality of the human worldwide. Dengue virus activity has been reported recently in the western areas of Saudi Arabia. There is no vaccine for dengue virus until now, and the control of the disease depends on the control of the vector. Objectiv...