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| 1 | Bioefficacy of Mentha piperita essential oil against dengue fever mosquito Aedes aegypti L显示文摘Objective:To assess the larvicidal and repellent potential of the essential oil extracted from the leaves of peppermint plant,Mentha piperita(M.piperita)against the larval and adult stages of Aedes aegypli(Ae.Aegypti).Methods:The larvicidal potential of peppermint oil was evaluated against early fourth instar larvae of Ae.aegypli using WHO protocol.The mortality counts were made after 24 and 48 h,and LC_(50)and LC_(90)values were calculated.The efficacy of peppermint oil as mosquito repellent was assessed using the human-bait technique.The measured area of one arm of a human volunteer was applied with the oil and the other arm was applied with ethanol.The mosquito bites on both the arms were recorded for 3 rain after every 15 min.The experiment continued for 3 h and the percent protection was calculated.Results:The essential oil extracted from M.piperita possessed excellent larvicidal efficiency against dengue vector.The bioassays showed an LC_(50)and LC_(90)value of 111.9 and 295.18 ppm,respectively after 24 h of exposure.The toxicity of the oil increased 11.8%when the larvae were exposed to the oil for 48h.The remarkable repellent properties of M.piperita essential oil were established against adults Ae.aegypti.The application of oil resulted in 100%protection till 150 min.After next 30 min,only 1-2 bites were recorded as compared with 8-9 bites on the control arm.Conclusions:The peppermint essential oil is proved to be efficient larvicide and repellent against dengue vector.Further studies are needed to identify the possible role of oil as adulticide.oviposition deterrent and ovicidal agent.The isolation of active ingredient from the oil could help in formulating strategies for mosquito control. | Sarita Kumar Naim Wahab Radhika Warikoo | 2011 | Asian Pacific Journal of Tropical Biomedicine2011，1，2： | 5 |
| 2 | Larvicidal and irritant activities of hexane leaf extracts of Citrus sinensis against dengue vector Aedes aegypti L.显示文摘Objective:To assess the larvicidal and irritant activities of the hexane extracts of leaves of Citrus sinensis(C.sinensis)against the early fourth instars and female adults of Aedes aegypti(Ae.aegypti).Methods:The larvicidal potential of the prepared leaf extract was evaluated against early fourth instar larvae of Ae.aegypli using WHO protocol.The mortality counts were made after 24 h and LC_(50)and LG_(50)values were calculated.The efficacy of extract as mosquito irritant was assessed by contact irritancy assays.Extract-impregnated paper was placed on a glass plate over which a perspex funnel with a hole on the top was kept inverted.Single female adult,3-day old unfed/blood-fed,was released inside the funnel.After 3 min of acclimatization time,the time taken for the first take-off and total number of flights undertaken during 15 min were scored.Results:The citrus leaf extracts from hexane possessed moderate larvicidal efficiency against dengue vector.The bioassays resulted in an LC_(50)and LC_(90)value of 446.84 and 1370.96 ppm,respectively after 24 h of exposure.However,the extracts were proved to be remarkable irritant against adults Ae.aegypti,more pronounced effects being observed on blood-fed females than unfed females.The extract-impregnated paper was thus proved to be 7-11 times more irritable as compared with the control paper.Conclusions:The hexane extracts from C.sinensis leaves are proved to be reasonably larvicidal But remarkably irritant against dengue vector.Further studies are needed to identify the possible role of extract as adulticide,oviposition deterrent and ovicidal agent.The isolation of active ingredient from the extract could help in formulating strategies for mosquito control. | Radhika Warikoo Ankita Ray Jasdeep Kaur Sandhu Roopa Sanial Naim Wahab Sarita Kumar | 2012 | Asian Pacific Journal of Tropical Biomedicine2012，2，2： | 2 |
| 3 | 市售长叶松油和锡兰肉桂油对登革热媒蚊埃及伊蚊的灭幼效果(英文)显示文摘松油和桂皮油由于具有芳香性气味,因而成为良好的成虫驱避剂,但是关于它们对蚊虫的杀幼虫作用研究不多。为揭示市售的长叶松Pinus longifolia油和锡兰肉桂Cinnamomum zeylanicum油对来源于印度德里的埃及伊蚊Aedes aegypti4龄幼虫的毒杀潜力,我们进行了室内研究,以幼虫死亡率及行为改变和形态改变等指标评估其杀幼虫潜力。结果表明:两种油对埃及伊蚊4龄幼虫均具有毒杀作用,且松油的灭幼效果优于桂皮油。松油的LC50和LC70值分别为0.33093mg/L和0.54476mg/L,而桂皮油的LC50和LC70值分别为0.63159mg/L和0.77736。进一步观察发现,LC90剂量下桂皮油的杀幼虫潜力强于松油,其LC90为1.11879mg/L,而松油的LC90为1.04915mg/L。在处理的幼虫中观察到行为改变,如兴奋、坐立不安、颤抖、痉挛然后瘫痪,说明这两种油可能对其神经肌肉系统产生了影响。显微观察处理幼虫的形态改变发现,与对照相比,大多数器官的外观正常,只是肛鳃略为内收缩而引起结构畸形,提示肛腮可能是这两种油的作用位点,腮的功能异常引起了幼虫死亡。这两种油品可开发用作防治蚊虫的新型杀幼虫药剂。 | Radhika WARIKOO Naim WAHAB Sarita KUMAR | 2011 | 昆虫学报2011，54，7： | 2 |
| 4 | Interspecies acetate transfer influences the extent of anaerobic benzoate degradation by syntrophic consortia 显示文摘 | Warikoo V Mcinerney MJ Robinson JA Suflita JM | 1996 | Appl Environ Microbiol1996，62，1： | 1 |
| 5 | Antagonists to Human and Mouse Vascular Endothelial Growth Factor Receptor 2 Generated by Directed Protein Evolution In Vitro显示文摘 | Elena V. Getmanova Yan Chen Laird Bloom Jochem Gokemeijer Steven Shamah Veena Warikoo Jack Wang Vincent Ling Lin Sun | 2006 | Chemistry & Biology2006，，5： | 1 |
| 6 | Chinese Turkestan during the nineteenth century: A socio-economic study显示文摘 | K. B. Warikoo | 1985 | Central Asian Survey1985，，3： | 1 |
| 7 | Hypoxanthine and cyclic adenosine 5' -monophosphate maintain meiatic arrest of rhesus monkey'oocytes in vitro 显示文摘 | Warikoo P K Bavister B D | 1989 | Fertil Steril1989，51，： | 1 |
| 8 | Larvicidal potential of ethanolic extracts of dried fruits of three species of peppercorns against different instars of an indian strain of dengue fever mosquito, Aedes aegypti L. (Diptera: Culicidae)显示文摘 | Sarita Kumar Radhika Warikoo Naim Wahab | 2010 | Parasitology Research2010，，4： | 1 |
| 9 | Integrated continuous production of recombinant therapeutic proteins显示文摘 | Warikoo V Godawat R Brower K Jain S Cummings D Simons E Johnson T Walther J Yu M Wright M McLarty J Karey K P Hwang C Zhou W C Riske F Konstantinov K | | 0，，12： | 1 |
| 10 | Larvicidal efficacy of the Citrus limetta peel extracts against Indian strains of Anopheles stephensi Liston and Aedes aegypti L.显示文摘 | Sarita Kumar Radhika Warikoo Monika Mishra Anubha Seth Naim Wahab | 2012 | Parasitology Research2012，，1： | 1 |
| 11 | In vitro maturation of ovary oocytesfrom unstmulated rhesus monkeys:assessment of cytoplasmic maturity by embryonic development after in vitro fertilization显示文摘 | Morgan P Warikoo P Bavister B | | 0，，： | 1 |
| 12 | Larvicidal potential of ethanolic extracts of dried fruits of three species of peppercorns against different instars of an indian strain of dengue fever mosquito, Aedes aegypti L. (Diptera: Culicidae)显示文摘 | Sarita Kumar Radhika Warikoo Naim Wahab | 2010 | Parasitology Research2010，，4： | 1 |
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