Efficacy of three formulations of diflubenzuron, an insect growth regulator, against Culex quinquefasciatus Say, the vector of Bancroftian filariasis in India
Identifieur interne : 004362 ( Main/Merge ); précédent : 004361; suivant : 004363Efficacy of three formulations of diflubenzuron, an insect growth regulator, against Culex quinquefasciatus Say, the vector of Bancroftian filariasis in India
Auteurs : C. Sadanandane ; P. S. Boopathi Doss ; P. JambulingamSource :
- The Indian Journal of Medical Research [ 0971-5916 ] ; 2012.
Descripteurs français
- KwdFr :
- MESH :
- parasitologie : Culex.
- pharmacologie : Diflubenzuron, Hormones juvéniles.
- Animaux, Culex, Filariose lymphatique, Humains, Inde, Vecteurs insectes.
- Wicri :
- geographic : Inde.
English descriptors
- KwdEn :
- MESH :
- chemical , pharmacology : Diflubenzuron, Juvenile Hormones.
- geographic : India.
- drug effects : Culex.
- parasitology : Culex.
- prevention & control : Elephantiasis, Filarial.
- transmission : Elephantiasis, Filarial.
- Animals, Humans, Insect Vectors.
Abstract
Insect growth regulators (IGRs) offer alternatives to conventional chemical larvicides that pose problem of resistance and environmental safety. However, only a limited number of IGRs have been approved for use in mosquito control. In the present study, two new formulations of the IGR diflubenzuron, 2 per cent granular (GR) and 2 per cent tablet (DT) were tested for its efficacy against
The WP, GR and DT formulations were tested in cesspits, street drains and abandoned wells each at four dosages, 25, 50, 75 and 100 g ai/ha. Additionally, the DT formulation was tested at a higher dosage of 1 tablet/m2 (equal to 400 g ai/ha).
The WP and GR formulations yielded >80 per cent inhibition of adult emergence (IE) for 7-10 days in cesspits, 4-7 days in street drains and 7-21 days in abandoned wells at all dosages tested. The DT formulation was effective only at higher dosage 100 g ai/ha and or 1 tablet/m2 for 7-15 days at all habitats.
The trial showed that the dosage 25 g ai/ha of 25 per cent WP could be the field dosage for cesspits and wells, and 50 g ai/ha for drains, to be applied at weekly intervals. The dosages 25, 50 and 100 g ai/ha of 2 per cent GR could be the field dosages for application in cesspits at weekly intervals, in abandoned wells every three weeks and in drains at weekly intervals, respectively. Diflubenzuron 25 per cent WP and 2 per cent GR could be used for larval control of
Url:
PubMed: 23287125
PubMed Central: 3573599
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PMC:3573599Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Efficacy of three formulations of diflubenzuron, an insect growth regulator, against <italic>Culex quinquefasciatus</italic> Say, the vector of Bancroftian filariasis in India</title><author><name sortKey="Sadanandane, C" sort="Sadanandane, C" uniqKey="Sadanandane C" first="C." last="Sadanandane">C. Sadanandane</name><affiliation><nlm:aff id="aff1"></nlm:aff></affiliation></author><author><name sortKey="Doss, P S Boopathi" sort="Doss, P S Boopathi" uniqKey="Doss P" first="P. S. Boopathi" last="Doss">P. S. Boopathi Doss</name><affiliation><nlm:aff id="aff1"></nlm:aff></affiliation></author><author><name sortKey="Jambulingam, P" sort="Jambulingam, P" uniqKey="Jambulingam P" first="P." last="Jambulingam">P. 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Sadanandane</name><affiliation><nlm:aff id="aff1"></nlm:aff></affiliation></author><author><name sortKey="Doss, P S Boopathi" sort="Doss, P S Boopathi" uniqKey="Doss P" first="P. S. Boopathi" last="Doss">P. S. Boopathi Doss</name><affiliation><nlm:aff id="aff1"></nlm:aff></affiliation></author><author><name sortKey="Jambulingam, P" sort="Jambulingam, P" uniqKey="Jambulingam P" first="P." last="Jambulingam">P. Jambulingam</name><affiliation><nlm:aff id="aff1"></nlm:aff></affiliation></author></analytic><series><title level="j">The Indian Journal of Medical Research</title><idno type="ISSN">0971-5916</idno><idno type="eISSN">0975-9174</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>Culex (drug effects)</term><term>Culex (parasitology)</term><term>Diflubenzuron (pharmacology)</term><term>Elephantiasis, Filarial (prevention & control)</term><term>Elephantiasis, Filarial (transmission)</term><term>Humans</term><term>India</term><term>Insect Vectors</term><term>Juvenile Hormones (pharmacology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Animaux</term><term>Culex ()</term><term>Culex (parasitologie)</term><term>Diflubenzuron (pharmacologie)</term><term>Filariose lymphatique ()</term><term>Filariose lymphatique (transmission)</term><term>Hormones juvéniles (pharmacologie)</term><term>Humains</term><term>Inde</term><term>Vecteurs insectes</term></keywords><keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en"><term>Diflubenzuron</term><term>Juvenile Hormones</term></keywords><keywords scheme="MESH" type="geographic" xml:lang="en"><term>India</term></keywords><keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Culex</term></keywords><keywords scheme="MESH" qualifier="parasitologie" xml:lang="fr"><term>Culex</term></keywords><keywords scheme="MESH" qualifier="parasitology" xml:lang="en"><term>Culex</term></keywords><keywords scheme="MESH" qualifier="pharmacologie" xml:lang="fr"><term>Diflubenzuron</term><term>Hormones juvéniles</term></keywords><keywords scheme="MESH" qualifier="prevention & control" xml:lang="en"><term>Elephantiasis, Filarial</term></keywords><keywords scheme="MESH" qualifier="transmission" xml:lang="en"><term>Elephantiasis, Filarial</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Humans</term><term>Insect Vectors</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Animaux</term><term>Culex</term><term>Filariose lymphatique</term><term>Humains</term><term>Inde</term><term>Vecteurs insectes</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Inde</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec id="st1"><title>Background & objectives:</title><p>Insect growth regulators (IGRs) offer alternatives to conventional chemical larvicides that pose problem of resistance and environmental safety. However, only a limited number of IGRs have been approved for use in mosquito control. In the present study, two new formulations of the IGR diflubenzuron, 2 per cent granular (GR) and 2 per cent tablet (DT) were tested for its efficacy against <italic>Culex quinquefasciatus</italic>, in comparison to its 25 per cent wettable powder (WP) formulation.</p></sec><sec id="st2"><title>Methods:</title><p>The WP, GR and DT formulations were tested in cesspits, street drains and abandoned wells each at four dosages, 25, 50, 75 and 100 g ai/ha. Additionally, the DT formulation was tested at a higher dosage of 1 tablet/m<sup>2</sup> (equal to 400 g ai/ha).</p></sec><sec id="st3"><title>Results:</title><p>The WP and GR formulations yielded >80 per cent inhibition of adult emergence (IE) for 7-10 days in cesspits, 4-7 days in street drains and 7-21 days in abandoned wells at all dosages tested. The DT formulation was effective only at higher dosage 100 g ai/ha and or 1 tablet/m<sup>2</sup> for 7-15 days at all habitats.</p></sec><sec id="st4"><title>Interpretation & conclusions:</title><p>The trial showed that the dosage 25 g ai/ha of 25 per cent WP could be the field dosage for cesspits and wells, and 50 g ai/ha for drains, to be applied at weekly intervals. The dosages 25, 50 and 100 g ai/ha of 2 per cent GR could be the field dosages for application in cesspits at weekly intervals, in abandoned wells every three weeks and in drains at weekly intervals, respectively. Diflubenzuron 25 per cent WP and 2 per cent GR could be used for larval control of <italic>Cx. quinquefasciatus</italic> under integrated vector management programme.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Mulla, Ms" uniqKey="Mulla M">MS Mulla</name></author><author><name sortKey="Darwazeh, Ha" uniqKey="Darwazeh H">HA Darwazeh</name></author><author><name sortKey="Kennedy, R" uniqKey="Kennedy R">R Kennedy</name></author><author><name sortKey="Dawson, Dm" uniqKey="Dawson D">DM Dawson</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Schafer, Ch" uniqKey="Schafer C">CH Schafer</name></author><author><name sortKey="Miura, T" uniqKey="Miura T">T Miura</name></author><author><name sortKey="Dupras, Ef" uniqKey="Dupras E">EF Dupras</name></author><author><name sortKey="Mulligan, Fs" uniqKey="Mulligan F">FS Mulligan</name></author><author><name sortKey="Wilder, Wh" uniqKey="Wilder W">WH 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