Bionomics of malaria vectors in two physiographically different areas of the epidemic-prone Thar Desert, north-western Rajasthan (India)

Tyagi, B. K.; Yadav, Suresh

doi:10.1006/jare.2000.0698

Cited by 20 publications

(13 citation statements)

References 6 publications

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“…Bedrooms and animal sheds were sprayed for 10-15 s depending upon the size of the room and were left closed for 15 min. Forceps and a torch were used to pick up the fallen mosquitoes and were stored in tubes containing silica gel Reisen and Milby, 1986;Tyagi and Yadav, 2001). The mosquitoes were identified by using taxonomic key compiled from fauna of British India by (Barraud, 1934;Christopher, 1933).…”

Section: Mosquito Collectionmentioning

confidence: 99%

Population dynamics of mosquitoes and malaria vector incrimination in district Charsadda, Khyber Pakhtunkhwa (KP) Pakistan

et al. 2015

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Section: Mosquito Collectionmentioning

confidence: 99%

Population dynamics of mosquitoes and malaria vector incrimination in district Charsadda, Khyber Pakhtunkhwa (KP) Pakistan

et al. 2015

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“…A. subpictus breeds profusely in rainwater accumulations and fallow rice fields, (Dhanda and Kaul 1980), waste water disposal systems, and irrigated sites (Mukhtar et al 2003), and is also associated with floating and submerged aquatic vegetation in the vicinity of rice plants (Kant et al 1996). Night time human biting collection in Rajasthan, India, showed two feeding peaks for A. subpictus, one early in the night and the other just before dawn (Tyagi and Yadav 2001).…”

Section: Introductionmentioning

confidence: 99%

Laboratory study on larvicidal activity of indigenous plant extracts against Anopheles subpictus and Culex tritaeniorhynchus

Elango¹,

Rahuman²,

Bagavan³

et al. 2009

Parasitol Res

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Anopheles subpictus and Culex tritaeniorhynchus have developed resistance to various synthetic insecticides, making its control increasingly difficult. Insecticides of botanical origin may serve as suitable alternative biocontrol techniques in the future. The leaf acetone, chloroform, ethyl acetate, hexane, and methanol extracts of Aegle marmelos (Linn.) Correa ex Roxb, Andrographis lineata Wallich ex Nees., Andrographis paniculata (Burm.f.) Wall. ex Nees., Cocculus hirsutus (L.) Diels, Eclipta prostrata L., and Tagetes erecta L. were tested against fourth-instar larvae of malaria vector, A. subpictus Grassi and Japanese encephalitis vector, C. tritaeniorhynchus Giles (Diptera: Culicidae). All plant extracts showed moderate larvicidal effects after 24 h of exposure at 1,000 ppm; however, the highest larval mortality was found in leaf ethyl acetate of A. marmelos, E. prostrata, hexane, methanol of A. paniculata and C. hirsutus against the larvae of A. subpictus (LC(50) = 167.00, 78.28, 67.24, 142.83 ppm; LC(90) = 588.31, 360.75, 371.91, and 830.01 ppm) and against the larvae of C. tritaeniorhynchus (LC(50) = 99.03, 119.89, 88.50, 105.19 ppm; LC(90) = 479.23, 564.85, 416.39, and 507.86 ppm), respectively. These results suggest that the leaf hexane extract of A. paniculata and ethyl acetate extract of E. prostrata have the potential to be used as an ideal eco-friendly approach for the control of the A. subpictus and C. tritaeniorhynchus. Therefore, this study provides first report on the mosquito larvicidal activity of plant extracts against vectors from Southern India.

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“…However, the simulated τ adult in Jodhpur was of shorter duration than the observed peak in MPI; the model produced τ adult values of approximately 1 to 2 months, which represents an underestimation for this region. Jodhpur contains many intensively irrigated areas, especially agricultural areas distributed in the northern part of the state [25]. Irrigation increases the amount of water available for the survival and growth of mosquitoes’ early life stages [25,33,34].…”

Section: Resultsmentioning

confidence: 99%

“…Air temperature varies from 1 °C in winter to 49 °C in summer, and annual rainfall is approximately 300 mm [24]. Irrigated areas near the Indira Gandhi canal system are extensive in Jodhpur, creating conditions favorable for vector mosquito breeding, and it is thought that recurrence of a severe epidemic such as that of 1992 is likely [25]. Dehradun district is located in the northern part of India, and is characterized by a subtropical monsoon climate.…”

Section: Methods and Datamentioning

confidence: 99%

Ecophysiological and Climatological Effects on Distribution of Vector Species and Malaria Incidence in India

Kaga

Ohta

2012

IJERPH

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The magnitude of regional malaria risk is dependent primarily on the dynamics and distribution of the vector species, which are determined mainly by climate conditions. A coupled model with ecophysiological and climatological factors was developed to estimate the spatiotemporal distribution of the five species of dominant malaria vectors in monsoon Asia. Here, we examined how the potential distribution obtained from the model could explain trends in malaria incidence observed in India, which has the highest number of confirmed cases of malaria in Asia. Most notably, there was a significant positive correlation between annual malaria incidences and the maximum generation number of vectors for each state (p < 0.001). Malaria incidence tended to increase exponentially as vector generation number increased. In addition, the interannual variation in observed regional malaria incidences was synchronized with that of the potential number of vector generations. The observed seasonal peak of malaria incidences corresponded closely to the simulated appearance period of vector species, except for intensively irrigated areas that experience anthropogenic impacts on hydrologic conditions. Simulated vector distributions effectively expressed spatial and temporal prevalence of malaria in India. This novel approach to modeling based on vector ecology is an effective method for assessing malaria risk.

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Bionomics of malaria vectors in two physiographically different areas of the epidemic-prone Thar Desert, north-western Rajasthan (India)

Cited by 20 publications

References 6 publications

Population dynamics of mosquitoes and malaria vector incrimination in district Charsadda, Khyber Pakhtunkhwa (KP) Pakistan

Population dynamics of mosquitoes and malaria vector incrimination in district Charsadda, Khyber Pakhtunkhwa (KP) Pakistan

Laboratory study on larvicidal activity of indigenous plant extracts against Anopheles subpictus and Culex tritaeniorhynchus

Ecophysiological and Climatological Effects on Distribution of Vector Species and Malaria Incidence in India

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