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Effects of the Weather on Dengue Infections in Kolkata, India 天气对印度加尔各答登革热感染的影响
Journal of mosquito research Pub Date : 2016-12-08 DOI: 10.5376/JMR.2016.06.0021
S. Poddar, P. Sengupta, G. Chandra, Hati Ak
{"title":"Effects of the Weather on Dengue Infections in Kolkata, India","authors":"S. Poddar, P. Sengupta, G. Chandra, Hati Ak","doi":"10.5376/JMR.2016.06.0021","DOIUrl":"https://doi.org/10.5376/JMR.2016.06.0021","url":null,"abstract":"Environmental elements including weather variables may play important role in the transmission of dengue. The present study has examined the impact of weather variation on dengue transmission in Kolkata, India in the year 2014. The study is conducted on impact of weather variants like various parameters of temperature, rainfall and relative humidity on dengue transmission in the city of Kolkata. Data on monthly-reported cases of dengue in 2014 have been obtained from Gautam Laboratories Imaging and Research Centre, Kolkata. Seasonal variability parameters include maximum, minimum and mean temperature ( ° C), monthly rainfall (mm), rainy days, total in wetting months (mm) and relative humidity (%). Chi-square test is used to find the differences relating to seasonal variability data. Poisson regression analysis is performed using data on monthly weather variables and dengue cases. In the month of August dengue infection started to disseminate which is found to reach its peak in the month of October. Relative humidity and monthly rainfall are found to be the significant predictors of dengue incidence in Kolkata. Maximum rainfall and humidity during the month of July may trigger the dissemination of dengue and the infections breakout in successive months in Kolkata. Number of dengue cases in Kolkata increased with increase in the number of rainy days as well as relative humidity and a fall of ambient temperature.","PeriodicalId":92079,"journal":{"name":"Journal of mosquito research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70858670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Aedes Indices and Their Significance on the Evaluation of the Dengue Control Activities in Rajapalayam Municipality of Tamil Nadu, India 印度泰米尔纳德邦拉贾巴拉亚姆市伊蚊指数及其对登革热控制活动评价的意义
Journal of mosquito research Pub Date : 2016-12-02 DOI: 10.5376/JMR.2016.06.0031
P. Basker, P. Sampath, P. Arumugasamy, K. Kolandaswamy, G. Elumalai
{"title":"Aedes Indices and Their Significance on the Evaluation of the Dengue Control Activities in Rajapalayam Municipality of Tamil Nadu, India","authors":"P. Basker, P. Sampath, P. Arumugasamy, K. Kolandaswamy, G. Elumalai","doi":"10.5376/JMR.2016.06.0031","DOIUrl":"https://doi.org/10.5376/JMR.2016.06.0031","url":null,"abstract":"This study was proposed to understand the significance of Aedes indices, House Index (HI), Container Index (CI) and Breteau Index (BI) for the evaluation of dengue control in Rajapalayam municipality of Tamil Nadu, India.Rajapalayam Municipality is situated in Virudhunagar District of Tamil Nadu, India (Latitude 9 ° 45’N; Longitude 77 ° 55’E). The basic epidemiological stratification was made in wards based on deaths and number of Ig-M positive cases of dengue. To collect data on Aedes indices, door to door cross sectional entomological surveillance was carried out in houses and their peri-domestic areas up to 200 meters. It is expressed in terms of percent HI, CI and BI (absolute number). These data were taken to evaluate the impact of the strategy implemented in Rajapalayam municipality. Necessary statistical analysis was made by the SPSS IBM Company, Chicago-3, and USA. The following results have been arrived from the study were: 1 stratification or delimitation is the foremost step to prioritize like high, moderate and low magnitude based on criteria prevailed in a place of outbreak to implement appropriate interventions. 2 The incubation of dengue serovars in human (3-14 days) is related to determine the days required for halting the outbreak. 3 Times taken to control measures exceeded 14 ± 1 days shown lacunae in our intervention. 4 Degrees of involvement among workers and supervisors in dengue control lead to halting the outbreak in time. 5 And also learnt that the thresholds of Aedes indices have been taken in part to stop the dengue outbreak. Stratification or delimitation is the prime tool to understand the magnitude of the problem in an outbreak. Aedes indices and their threshold are still effective evaluating tools along with their attributes.","PeriodicalId":92079,"journal":{"name":"Journal of mosquito research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70859276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Laboratory Evaluation of Crude Leaf Extracts of Cassia occidentalis Linneaus (Caesalpinaceae) as an Oviposition Determinant and Ovicide against Vector Mosquitoes Anopheles stephensi Liston, Culex quinquefasciatus Say and Aedes aegypti Linneaus (Diptera: Culicidae) 西决明叶粗提物对斯氏按蚊、致倦库蚊和埃及伊蚊诱蚊作用的室内评价(双翅目:库蚊科)
Journal of mosquito research Pub Date : 2016-11-29 DOI: 10.5376/jmr.2016.06.0033
V. Raja, J. Ravindran, A. Eapen, J. William
{"title":"Laboratory Evaluation of Crude Leaf Extracts of Cassia occidentalis Linneaus (Caesalpinaceae) as an Oviposition Determinant and Ovicide against Vector Mosquitoes Anopheles stephensi Liston, Culex quinquefasciatus Say and Aedes aegypti Linneaus (Diptera: Culicidae)","authors":"V. Raja, J. Ravindran, A. Eapen, J. William","doi":"10.5376/jmr.2016.06.0033","DOIUrl":"https://doi.org/10.5376/jmr.2016.06.0033","url":null,"abstract":"The oviposition determinant and ovicidal activity of hexane, ethyl acetate and methanol crude leaf extracts of Cassia occidentalis against Anopheles stephensi , Culex quinquefasciatus and Aedes aegypti were studied in laboratory. The ovipositional determinant nature of the test solutions was studied at 0.1% by choice based oviposition of gravid vector mosquitoes. In hexane, ethyl acetate and methanol crude leaf extracts, the effective deterrence was 97.0%, 92.5% and 93.7% in Anopheles stephensi ; 87.8%, 90.4% and 73.0% in Culex quinquefasciatus ; 94.0%, 96.2% and 99.0% in Aedes aegypti respectively. The ovipositional active index was -0.9, -0.9 and -0.9; -0.8, -0.8 and -0.5; -0.8, -0.8 and -0.9 respectively indicating the deterrent property of the crude leaf extracts. The ovicidal activity was studied at 0.25%, 0.50%, 1.00% and 2.00%. Gravid vector mosquitoes were constrained in an ovitrap to lay eggs directly on to the test solutions. Egg mortality rate (per cent of eggs unhatched) was determined for assessment. At the lowest concentration, among the extracts, no absolute mortality was obtained and the hexane extract caused maximum egg mortality in both Anopheles stephensi (74.5%) and Culex quinquefasciatus (66.5%) and methanol extract in Aedes aegypti (92.5%) indicating poor ovicidal activity.","PeriodicalId":92079,"journal":{"name":"Journal of mosquito research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70859073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Effect of Habitat Modifications on Predation Potential of Anisops sardea (Hemiptera: Notonectidae) against Larvae of Culex vishnui, Vector of Japanease Encephalitis 生境改变对沙蚤对日本脑炎病媒维斯努库蚊幼虫捕食潜力的影响
Journal of mosquito research Pub Date : 2016-11-25 DOI: 10.5376/JMR.2016.06.0030
A. Ghosh, G. Chandra, S. Bandyopadhyay, R. Mondal
{"title":"Effect of Habitat Modifications on Predation Potential of Anisops sardea (Hemiptera: Notonectidae) against Larvae of Culex vishnui, Vector of Japanease Encephalitis","authors":"A. Ghosh, G. Chandra, S. Bandyopadhyay, R. Mondal","doi":"10.5376/JMR.2016.06.0030","DOIUrl":"https://doi.org/10.5376/JMR.2016.06.0030","url":null,"abstract":"To prevent emergence of insecticide resistance in vector population & biological magnification of toxic insecticides through food chain, more attention is now put on application of biological control system to reduce the population of vectors. Present study was carried out to assess the effect of habitat modifications on the predatory ability of Anisops sardea (Hemiptera: Notonectidae) against immature of Culex Vishnui (Diptera: Culicidae) group of mosquitoes in laboratory and semi-field bioassay.To study the effect of habitat modifications, laboratory based predatory experiments were carried with A. sardea as predator and Cx.vishnui group of mosquitoes as prey species. To determine prey preference of predator species, predatory experiment was done in presence of mosquitoes belongs to different genera. For a long-term study on predation rate, for 15 consecutive days, 10 adult individuals of A. sardea were kept in a plastic bucket of 20 L capacity in open natural condition and number of mosquito larvae consumed/per day was calculated.Result of single factor ANOVA analysis revealed that habitat modifications have significant effect on the predatory rate of A sardea as calculated F value (34.10) is significantly higher than table value (F crit =2.156). Pair wise ‘t test’ revealed significant variations in the predation rate when different habitat combinations were analyzed. Results of selectivity index, niche breadth and food breadth were also evaluated. Long term bioassay in semi-field condition revealed that predatory rates were almost similar throughout the study period.Considering the habitat specificity, prey preference and the rate of predation in semi field condition, it can be concluded that A. sardea can be used as potential biological control agent against Culex Vishnui group of mosquitoes.","PeriodicalId":92079,"journal":{"name":"Journal of mosquito research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70859212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Phenotypic and Biochemical Characterization of Microbial Diversity of Aedes albopictus Breeding Groundwater Occurring in Burdwan, West Bengal, India 印度西孟加拉邦布尔德万白纹伊蚊孳生地下水微生物多样性表型及生化特征
Journal of mosquito research Pub Date : 2016-11-24 DOI: 10.5376/JMR.2016.06.0026
A. Chakraborty, S. Chatterjee
{"title":"Phenotypic and Biochemical Characterization of Microbial Diversity of Aedes albopictus Breeding Groundwater Occurring in Burdwan, West Bengal, India","authors":"A. Chakraborty, S. Chatterjee","doi":"10.5376/JMR.2016.06.0026","DOIUrl":"https://doi.org/10.5376/JMR.2016.06.0026","url":null,"abstract":"Aedes albopictus is one of the nuisances causing mosquito in today’s world which poses a great threat to public health. Study of the breeding ground water, habitat selection and the role of algal-microbial diversity are of major importance for effective vector control strategies. Selected sites of Burdwan were surveyed throughout the year July 2014 to June 2015 in a seasonal basis and water samples were collected. After screening and isolation by serial dilution, a total of 18 bacterial isolates were found, among which KSG1, KSG2, KSG5 and BM3 were found to be prevalent throughout the year. A thorough bacterial characterization including phenotypic, morphological, biochemical, extracellular and antibiotic assay were done in order to identify the bacterial isolates at a preliminary level. Isolates were identified to be Gram positive, rod shaped bacteria resembling that of Bacillus sp. Some were spore formers too. Microbial diversity plays a major role in eliciting oviposition positive responses for the mosquitoes. Manipulating and eliminating these bacteria may serve as a tool for vector eradication.","PeriodicalId":92079,"journal":{"name":"Journal of mosquito research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70858502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of Temperature Stress on Pre-imaginal Development and Adult Ptero-fitness of the Vector Mosquito, Culex quinquefasciatus (Diptera: Culicidae) 温度胁迫对致倦库蚊(双翅目:库蚊科)发育及成蚊翼适性的影响
Journal of mosquito research Pub Date : 2016-11-18 DOI: 10.5376/JMR.2016.06.0014
I. Olayemi, V. Onumanyi, A. C. Ukubuiwe, A. Jibrin
{"title":"Effects of Temperature Stress on Pre-imaginal Development and Adult Ptero-fitness of the Vector Mosquito, Culex quinquefasciatus (Diptera: Culicidae)","authors":"I. Olayemi, V. Onumanyi, A. C. Ukubuiwe, A. Jibrin","doi":"10.5376/JMR.2016.06.0014","DOIUrl":"https://doi.org/10.5376/JMR.2016.06.0014","url":null,"abstract":"Day-old first instar larvae of Culex quinquefasciatus mosquitoes were cultured to imago eclosion, at constant temperatures of 30.00, 32.00, 34.00°C and ambient water temperature (28.00±0.02°C, Control). The duration and survivorship of larval and pupal life stages were monitored daily. The wings of adult mosquitoes were measured for length and fluctuating asymmetry. The results indicated significant (p<0.05) effects of water temperature on developmental indices investigated. The duration of larval and pupal stage was significantly shortened from 10.82±1.02 days (28.00±0.02°C) to 7.65±2.15 days (34.00°C) and 2.04±0.70 (28.00±0.02°C) to 1.19±0.27 days (34.00°C), respectively. Survivorship of immature stages showed inverse relationship with increasing water temperature; with survivorship of the pupae significantly higher than those of the larvae at all the temperatures tested. Wing length and fluctuating asymmetry were also affected by rise in temperature. The findings of this study indicate limited thermal adaptation of Cx. quinquefasciatus to relatively warm areas; this information should help in developing effective environmental mosquito-vector control against the species by the discouragement of ecological settings that may reduce micro-climatic temperatures around breeding habitats of the mosquito species.","PeriodicalId":92079,"journal":{"name":"Journal of mosquito research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70857851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Dengue Fever: Causes, Prevention and Recent Advances 登革热:病因、预防和最新进展
Journal of mosquito research Pub Date : 2016-11-17 DOI: 10.5376/JMR.2016.06.0029
Anum Jaweria, Fatima Naeem, M. Malik, Faqeeha Javaid, Q. Ali, Shahbaz Ahmad, M. F. Khan, I. Nasir
{"title":"Dengue Fever: Causes, Prevention and Recent Advances","authors":"Anum Jaweria, Fatima Naeem, M. Malik, Faqeeha Javaid, Q. Ali, Shahbaz Ahmad, M. F. Khan, I. Nasir","doi":"10.5376/JMR.2016.06.0029","DOIUrl":"https://doi.org/10.5376/JMR.2016.06.0029","url":null,"abstract":"Dengue virus (DENV) is the most prevailing arthropod borne pathogen. Its four serotypes are present in tropical regions. It affects about 50 to 100 million population annually. Infection proceeds into Dengue shock syndrome and Dengue hemophilic fever which are more dangerous than dengue fever. Diagnosis and treatment is needed to be done on time to lessen the harmful effects. In this review we will discuss viral structure, life cycle of Dengue virus, its diagnosis, and its prevention and about the recent advances on Dengue research.","PeriodicalId":92079,"journal":{"name":"Journal of mosquito research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70858633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Bioefficacy of some Indigenous Nigerian Plant Leaves on Mosquito Species 尼日利亚一些本土植物叶片对蚊虫的生物功效
Journal of mosquito research Pub Date : 2016-11-09 DOI: 10.5376/jmr.2016.06.0027
T. Ebe, R. Njoku-Tony, C. Ihejirika, L. Izunobi, I. Mgbemena, U. Udensi
{"title":"Bioefficacy of some Indigenous Nigerian Plant Leaves on Mosquito Species","authors":"T. Ebe, R. Njoku-Tony, C. Ihejirika, L. Izunobi, I. Mgbemena, U. Udensi","doi":"10.5376/jmr.2016.06.0027","DOIUrl":"https://doi.org/10.5376/jmr.2016.06.0027","url":null,"abstract":"Mosquitoes have caused a great damage to humans and animals and the use of synthetic insecticides in the control of this pest is also harmful. Therefore, there is need to control it with natural, biodegradable, economical and environmental friendly insecticide. Leaves of different local plants ( Azadirachta indica , Ocimum gratissimum , Cymbopogon citratus and Ageratum conyzoides ) were extracted using soxhlet apparatus for petroleum ether extraction solvent. Also, distilled water was used for aqueous extraction separately. The different extracts were used to treat the pupal stage of three different mosquito species ( Anopheles gambiae , Culex quinquefasciatus and Aedes aegypti ) separately. It was observed from the result that the mean death in different extraction solvent was significantly different with higher mortality in petroleum ether extracts than aqueous extracts. Also, mean effect of each plant extract is significantly different on the death of mosquito at 0.05% confidence level Azadirachta indica leaf most effective followed by Ocimum gratissimum leaf and lastly Ageratum conyzoides leaf. Furthermore, at the same concentration,   Anopheles gambiae recorded the highest mean death of 6.296 followed by Aedes aegypti with 5.558 and Culex quinquefasciatus 3.885.The leaves of the local plants used were effective in the control of mosquito species.","PeriodicalId":92079,"journal":{"name":"Journal of mosquito research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70858557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparative Efficiency of Four Repellents against Anopheles gambiae s.s. 四种驱蚊剂对冈比亚按蚊的驱蚊效果比较。
Journal of mosquito research Pub Date : 2016-11-09 DOI: 10.5376/JMR.2016.06.0025
K. Ogillo, Lucille Lyaruu, E. Lyatuu, A. Mahande, E. Kweka
{"title":"Comparative Efficiency of Four Repellents against Anopheles gambiae s.s.","authors":"K. Ogillo, Lucille Lyaruu, E. Lyatuu, A. Mahande, E. Kweka","doi":"10.5376/JMR.2016.06.0025","DOIUrl":"https://doi.org/10.5376/JMR.2016.06.0025","url":null,"abstract":"Personal protection tools are of paramount importance in vector borne disease control. The use of repellents is an additional tool for use when out of bed. Four repellents N, N-Diethyl-3-methylbenzamide (DEET), Maskitta, lemon grass and Menthol propylene glycol carbonate (MR08) were examined in this experiment for their protective efficiency against malaria vectors Anopheles gambiae senso stricta. The four repellents DEET, Maskitta, Citronella and MR08 were formulated on volume based ratio against glycerin oil. The repellent dosages were evaluated against Anopheles gambiae in a 30×30×30 cm cage. Treated arm of a volunteer was exposed in the cage for a period of one hour for each dosage. Likewise for negative control. Experiments were conducted in a room with temperature and humidity of 27±2 degree Celsius and 75±2% respectively. Each repellent experiment had six replicates. In this study the results showed that, the protective efficiency was highest in Maskitta, followed by DEET, MR08 and lemon grass was least protective in all dosages. DEET was the golden standard positive control and glycerin was negative control in these experiments. Maskitta reached a protection efficiency of 100% similar to DEET while MRO8 were above 80% in all concentrations. From the results of these experiments, the use of repellents for personal protective gear has a significant role in reducing human-vector contact. Maskitta which is a newly formulated repellent showed a protection efficiency of 100%, this is evidence that more scientific research should be carried out in order to have more quality effective products for personal protection against mosquitoes.","PeriodicalId":92079,"journal":{"name":"Journal of mosquito research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70858861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Larvicidal Efficacy of Fruit Peel Extracts of Citrus maxima against Culex quinquefasciatus 柑桔皮提取物对致倦库蚊的杀幼虫效果研究
Journal of mosquito research Pub Date : 2016-11-07 DOI: 10.5376/JMR.2016.06.0020
S. Mallick, Devaleena Mukherjee, Anushree Singha Ray, G. Chandra
{"title":"Larvicidal Efficacy of Fruit Peel Extracts of Citrus maxima against Culex quinquefasciatus","authors":"S. Mallick, Devaleena Mukherjee, Anushree Singha Ray, G. Chandra","doi":"10.5376/JMR.2016.06.0020","DOIUrl":"https://doi.org/10.5376/JMR.2016.06.0020","url":null,"abstract":"Crude, and three different solvents, viz., n- hexane, ethyl acetate, and methanol fruit peel extracts of Citrus maxima Merr. ( C. maxima ) were applied at dose dependent manner for larvicidal bioassay against Culex quinquefasciatus Say, 1823 ( Cx. quinquefasciatus ) mosquito. All instars larvae were used for larvicidal bioassay of crude fruit peel extract and only 3 rd instar larvae were used for larvicidal bioassay of different solvent extracts.  Log-probit analyses along with Regression equations and R 2 values were determined for larvicidal activity of both crude and different solvent extracts. An ANOVA analysis was carried out to justify the statistical significance. Qualitative phytochemical analyses were done. n-Hexane fruit peel extract was also applied on non target organisms. Crude fruit peel extract of C. maxima showed strong lethal activity against all instars larvae of Cx. quinquefasciatus . 1 st instar larvae were most susceptible to crude fruit peel extract. 1 st instar larvae showed 100% mortality only at 0.2% concentration of crude fruit peel extract after 72 h of exposure. 100% mortality of 3 rd instar larvae were observed at 400 ppm concentration of n-hexane fruit peel extract after 24 h of exposure whereas, ethyl acetate and methanol fruit peel extracts showed 100% mortality at 800 ppm concentration  after 72 and 24 h of exposure respectively. LC 50 values of n-hexane, ethyl acetate and methanol fruit peel extracts were 204.60, 640.95, and 336.36 ppm, respectively against 3 rd instar larvae after 24 h of exposure.  No mortality was observed on control treatments. Fruit peel extract contained different phytochemical constituents. Non-target organisms did not show any abnormal activity and mortality.","PeriodicalId":92079,"journal":{"name":"Journal of mosquito research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70858597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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