نتایج جستجو برای: ovicidal effect
تعداد نتایج: 1641857 فیلتر نتایج به سال:
BACKGROUND Within the framework to control mosquitoes, ovicidal, larvicidal and pupicidal activity of Annona senegalensis leaf extract and its 4 fractions against Anopheles gambiae and Culex quinquefasciatus were evaluated in the laboratory conditions. METHODS Ovicidal test was performed by submitting at least 100 eggs of mosquitoes to 125, 250, 500, 1000 and 2000 ppm concentrations, while la...
OBJECTIVE To determine the larvicidal and repellent activities of Coccinia (C) indica Wight and Arnold (Family:Cucurbitaceae) extract against Culex (Cx.) quinquefasciatus, Aedes (Ae.) aegypti and Anopheles (An.) stephensi. MATERIALS AND METHODS The ovicidal activity was determined against three mosquito species to various concentrations ranging from 50-300 ppm under the laboratory conditions....
OBJECTIVE Four plant extracts possessing molluscicidal and insecticidal efficacy were evaluated under laboratory conditions versus Biomphalaria alexandrina, Lymnea cailliaudi snails, their egg masses and Culex pipiens larvae. These extracts included Grape seed, Eucalyptus, Pomegranate, Verbesina alcoholic extracts, as well as Eucalyptus oil. METHODS Different mortalities in the exposed vector...
Growing patterns of pediculocidal drug resistance towards head louse laid the foundation for research in exploring novel anti-lice agents from medicinal plants. In the present study, various extracts of Pongamia pinnata leaves were tested against the head louse Pediculus humanus capitis. A filter paper diffusion method was conducted for determining the potential pediculocidal and ovicidal activ...
The pink bollworm Pectinophora gossypiella is one of the most destructive insects attacking cotton fields world-wide. The present study was conducted to evaluate the survival and developmental effects of the novel chitin synthesis inhibitors (CSIs), Noviflumuron and Novaluron, on this insect pest, after treatment of 1-day old eggs. These CSIs exhibited ovicidal activities on eggs, in a dose-dep...
Helminthosis is one of the major problems of livestock production throughout the world, particularly in tropical and subtropical areas. Chemical control of helminths is in practice in most of the parts of the world. The problem of the development of resistance against the common chemical anthelmintics has renewed the interest in the study of medicinal plants for the development of novel anthelm...
Schistosomiasis is a neglected disease with public health importance in tropical and subtropical regions. An alternative to the disease control is the use of molluscicides to eliminate or reduce the intermediate host snail population causing a reduction of transmission in endemic regions. In this study nine extracts from eight Piperaceae species were evaluated against Biomphalaria glabrata embr...
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