Understanding Behavioural Temperament of Phlebotomus argentipes Under the Influence of DDT-IRS Versus SP-IRS for Scoping New Approaches for Maximum Control Over the VL-Vector Population in Bihar

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dc.contributor.authorKumar, Vijayen_US
dc.contributor.authorRama, Aartien_US
dc.contributor.authorMandal, Rakeshen_US
dc.contributor.authorDas, Pradeepen_US
dc.date.accessioned2020-10-16T08:43:57Z
dc.date.available2020-10-16T08:43:57Z
dc.date.issued2019-12
dc.description.abstractBackground:After the decades of Dichlorodiphenyltrichloroethane (DDT) use, Phlebotomus argentipesreportedly developed resistance against it affecting every aspect of vector control at grass-root level. Although DDT based Indoor Residual Spray (IRS) has been replaced with Alphacypermethrine-a Synthetic Pyrethroid (SP) based insecticide, since 2016 butits successful implementation at the Visceral Leishmaniasis (VL) endemic regime of Bihar doesn’t cause much effect upon VL vector density. Furthermore, the outcomes of existing operational research works, it Original ResearchArticle had been observed that VL vectors are continuously changing its behavior under the pressure of insecticides. Methods: For validating the hypothesis, present study has been carried out at Vaishali and Patna being highly and semi-endemic sites respectively for quantifying the oriental behavior among VL vectors persuaded by the IRS and enforce them to remain alive and get trapped in light trap even after changed chemical composition of IRS i.e., SP-IRS from routine DDT-IRS. Results:Following results, a significant reduction in sand fly density (i.e., 33.09% and 29.16%) was observed for outdoor and indoor caught sand flies, collected with light trap and aspirator respectively. Significant higher no. of sand fly collection in terms of per light traps per night was recorded from the outdoor sites than thosefrom indoor habitat for each village of Vaishali and Saran district of Bihar. Higher no. of male sand flies than to that of female ones were collected from outdoor sites and only unfed female sand flies (i.e., 100%) were caught following SP-IRS from each study villages of Vaishali and Saran districts of Bihar.Conclusions:The results of higher no. of sand flies collection from the outdoor sites as compared with the indoor habitat validate the hypothesis of gradual shifting of habitat of VL vectors from endophilic to exophilic which is undoubtedly followed due to the fact of developed resistance among them against chemical constituent of IRS. Results provide very useful information about the sand fly dynamics under the impact of IRS and accordingly, advocates the combined approach of IRS along with insecticidal fogging together at a same time that could be an effective dividend for maximum VL vector control along for negotiating VL cases at par for longer duration during the maintenance phase at the VL foci.en_US
dc.identifier.affiliationsDepartment of Vector Biology and Control, ICMR-Rajendra Memorial Research Institute of Medical Sciences, Agamkuan, Patna -800 007, Bihar, Indiaen_US
dc.identifier.affiliationsDepartment of Vector Biology and Control, ICMR-Rajendra Memorial Research Institute of Medical Sciences, Agamkuan, Patna -800 007, Bihar, Indiaen_US
dc.identifier.affiliationsDepartment of Vector Biology and Control, ICMR-Rajendra Memorial Research Institute of Medical Sciences, Agamkuan, Patna -800 007, Bihar, Indiaen_US
dc.identifier.affiliationsICMR-Rajendra Memorial Research Institute of Medical Sciences, Agamkuan, Patna -800 007, Bihar, Indiaen_US
dc.identifier.citationKumar Vijay, Rama Aarti, Mandal Rakesh, Das Pradeep. Understanding Behavioural Temperament of Phlebotomus argentipes Under the Influence of DDT-IRS Versus SP-IRS for Scoping New Approaches for Maximum Control Over the VL-Vector Population in Bihar. International Journal of TROPICAL DISEASE & Health. 2019 Dec; 40(1): 1-11en_US
dc.identifier.issn2278–1005
dc.identifier.placeIndiaen_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/209509
dc.languageenen_US
dc.publisherSCIENCEDOMAIN internationalen_US
dc.relation.issuenumber1en_US
dc.relation.volume40en_US
dc.source.urihttps://dx.doi.org//10.9734/IJTDH/2019/v40i130217en_US
dc.subjectDichlorodiphenyltrichloroethane (DDT)en_US
dc.subjectphlebotomus argentipesen_US
dc.subjectIndoor Residual Spray (IRS)en_US
dc.subjectSynthetic Pyrethroid (SP)en_US
dc.subjectalphacypermethrineen_US
dc.subjectVisceral Leishmaniasis (VL)en_US
dc.subjectendophilicen_US
dc.subjectexophilic.en_US
dc.titleUnderstanding Behavioural Temperament of Phlebotomus argentipes Under the Influence of DDT-IRS Versus SP-IRS for Scoping New Approaches for Maximum Control Over the VL-Vector Population in Biharen_US
dc.typeJournal Articleen_US
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