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Ovicidal and repellent activities of botanical extracts against Culex quinquefasciatus, Aedes aegypti and Anopheles stephensi (Diptera: Culicidae)

Identifieur interne : 001675 ( Main/Curation ); précédent : 001674; suivant : 001676

Ovicidal and repellent activities of botanical extracts against Culex quinquefasciatus, Aedes aegypti and Anopheles stephensi (Diptera: Culicidae)

Auteurs : M. Govindarajan [Inde] ; T. Mathivanan [Inde] ; K. Elumalai [Inde] ; K. Krishnappa [Inde] ; A. Anandan [Inde]

Source :

Asian Pacific Journal of Tropical Biomedicine [ 2221-1691 ] ; 2011.

RBID : PMC:3609154

Abstract

Objective

To determine the ovicidal and repellent activities of methanol leaf extract of Ervatamia coronaria (E. coronaria) and Caesalpinia pulcherrima (C. pulcherrima) against Culex quinquefasciatus (Cx. quinquefasciatus), Aedes aegypti (Ae. aegypti) and Anopheles stephensi (An. stephensi).

Methods

The ovicidal activity was determined against three mosquito species at various concentrations ranging from 50-450 ppm under the laboratory conditions. The hatch rates were assessed 48 h after treatment. The repellent efficacy was determined against three mosquito species at three concentrations viz., 1.0, 2.5 and 5.0 mg/cm² under the laboratory conditions.

Results

The crude extract of E. coronaria exerted zero hatchability (100% mortality) at 250, 200 and 150 ppm for Cx. quinquefasciatus, Ae. aegypti and An. stephensi, respectively. The crude extract of C. pulcherrima exerted zero hatchability (100% mortality) at 375, 300 and 225 ppm for Cx. quinquefasciatus, Ae. aegypti and An. Stephensi, respectively. The methanol extract of E. coronaria found to be more repellenct than C. pulcherrima extract. A higher concentration of 5.0 mg/cm² provided 100% protection up to 150, 180 and 210 min against Cx. quinquefasciatus, Ae. aegypti and An. stephensi, respectively. The results clearly showed that repellent activity was dose dependent.

Conclusions

From the results it can be concluded the crude extracts of E. coronaria and C. pulcherrima are an excellent potential for controlling Cx. quinquefasciatus, Ae. aegypti and An. stephensi mosquitoes.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3609154

DOI: 10.1016/S2221-1691(11)60066-X
PubMed: 23569723
PubMed Central: 3609154

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Le document en format XML

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 (Diptera: Culicidae)</title>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Ovicidal and repellent activities of botanical extracts against <italic>Culex quinquefasciatus, Aedes aegypti</italic>
 and <italic>Anopheles stephensi</italic>
 (Diptera: Culicidae)</title>
<author><name sortKey="Govindarajan, M" sort="Govindarajan, M" uniqKey="Govindarajan M" first="M" last="Govindarajan">M. Govindarajan</name>
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<country xml:lang="fr">Inde</country>
<wicri:regionArea>Division of Vector Biology and Phytochemistry, Department of Zoology, Annamalai University, Annamalainagar-608 002, Tamil Nadu</wicri:regionArea>
<wicri:noRegion>Tamil Nadu</wicri:noRegion>
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<country xml:lang="fr">Inde</country>
<wicri:regionArea>Unit of Entomotoxicity, Department of Zoology, Government Thirumagal Mills College, Vellore-632 607, Tamilnadu</wicri:regionArea>
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<author><name sortKey="Anandan, A" sort="Anandan, A" uniqKey="Anandan A" first="A" last="Anandan">A. Anandan</name>
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<series><title level="j">Asian Pacific Journal of Tropical Biomedicine</title>
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<front><div type="abstract" xml:lang="en"><sec><title>Objective</title>
<p>To determine the ovicidal and repellent activities of methanol leaf extract of <italic>Ervatamia coronaria</italic>
 (E. coronaria) and <italic>Caesalpinia pulcherrima</italic>
 (C. pulcherrima) against <italic>Culex quinquefasciatus</italic>
 (Cx. quinquefasciatus), <italic>Aedes aegypti</italic>
 (Ae. aegypti) and <italic>Anopheles stephensi</italic>
 (An. stephensi).</p>
</sec>
<sec><title>Methods</title>
<p>The ovicidal activity was determined against three mosquito species at various concentrations ranging from 50-450 ppm under the laboratory conditions. The hatch rates were assessed 48 h after treatment. The repellent efficacy was determined against three mosquito species at three concentrations <italic>viz.</italic>
, 1.0, 2.5 and 5.0 mg/cm<sup>2</sup>
 under the laboratory conditions.</p>
</sec>
<sec><title>Results</title>
<p>The crude extract of <italic>E. coronaria</italic>
 exerted zero hatchability (100% mortality) at 250, 200 and 150 ppm for Cx. quinquefasciatus, Ae. aegypti and An. stephensi, respectively. The crude extract of <italic>C. pulcherrima</italic>
 exerted zero hatchability (100% mortality) at 375, 300 and 225 ppm for Cx. quinquefasciatus, Ae. aegypti and An. Stephensi, respectively. The methanol extract of E. coronaria found to be more repellenct than C. pulcherrima extract. A higher concentration of 5.0 mg/cm<sup>2</sup>
 provided 100% protection up to 150, 180 and 210 min against Cx. quinquefasciatus, Ae. aegypti and An. stephensi, respectively. The results clearly showed that repellent activity was dose dependent.</p>
</sec>
<sec><title>Conclusions</title>
<p>From the results it can be concluded the crude extracts of E. coronaria and C. pulcherrima are an excellent potential for controlling Cx. quinquefasciatus, Ae. aegypti and An. stephensi mosquitoes.</p>
</sec>
</div>
</front>
</TEI>
</record>

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Ovicidal and repellent activities of botanical extracts against Culex quinquefasciatus, Aedes aegypti and Anopheles stephensi (Diptera: Culicidae)

Ovicidal and repellent activities of botanical extracts against Culex quinquefasciatus, Aedes aegypti and Anopheles stephensi (Diptera: Culicidae)

Source :

Abstract

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