A guide to the identification of the anopheline mosquitoes of Sri Lanka.111. Pupae

Amerasinghe, F.P.

doi:10.4038/jnsfsr.v23i3.5849

Cited by 34 publications

(61 citation statements)

References 4 publications

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“…13,14 Collected anopheline mosquitoes were anesthetized using chloroform and identified to species in the field using taxonomic keys. 15 All intact females were air-dried, transported to the laboratory at the University of Peradeniya, and rechecked for taxonomic identification. Head-thoraces were separated from abdomens and both were stored separately for immunologic assays.…”

Section: Methodsmentioning

confidence: 99%

Malaria vectors in a traditional dry zone village in Sri Lanka.

Amerasinghe¹,

Amerasinghe²,

Konradsen³

et al. 1999

Am J Trop Med Hyg

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Abstract. Malaria transmission by anopheline mosquitoes was studied in a traditional tank-irrigation-based riceproducing village in the malaria-endemic low country dry zone of northcentral Sri Lanka during the period August 1994-February 1997. Adult mosquitoes were collected from human and bovid bait catches, bovid-baited trap huts, indoor catches, and pit traps. Mosquito head-thoraces were tested for the presence of Plasmodium falciparum and P. vivax, and blood-engorged abdomens for the presence of human blood by ELISAs. House surveys were done at twoday intervals to record cases of blood film-confirmed malaria among the villagers. A total of 7,823 female anophelines representing 14 species were collected. Trends in anopheline abundance were significantly correlated with rainfall of the preceding month in An. annularis, An. barbirostris, An. subpictus, An. vagus, and An. varuna, but were not significant in An. culicifacies and An. peditaeniatus. Malaria parasite infections were seen in seven mosquito species, with 75% of the positive mosquitoes containing P. falciparum and 25% P. vivax. Polymorph PV247 was recorded from a vector (i.e., An. varuna) for the first time in Sri Lanka. Computations of mean number of infective vector (MIV) rates using abundance, circumsporozoite (CS) protein rate, and human blood index (HBI) showed the highest rate in An. culicifacies. A malaria outbreak occurred from

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Section: Methodsmentioning

confidence: 99%

Malaria vectors in a traditional dry zone village in Sri Lanka.

Amerasinghe¹,

Amerasinghe²,

Konradsen³

et al. 1999

Am J Trop Med Hyg

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“…Morphological characters of this suspicious species were not compatible with the any of the mosquito species in the morphological key for Sri Lankan anopheline fauna (Amerasinghe, 1990).…”

Section: Resultsmentioning

confidence: 71%

“…All mosquitoes collected by HC, WT, CBNT, CBHT and adult emerging from larvae were identified using an achromatic magnifying lens (×10) and the taxonomic keys prepared by Amerasinghe (1990), Harrison (1980) and Rattanarithikul et al (2006).…”

Section: Identification Of Anopheles Mosquitoesmentioning

confidence: 99%

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Appearance of <i>Anopheles jeyporiensis</i> James from Sri Lanka

Gunathilaka

Hapugoda

Abeyewickreme

et al. 2015

Jap. J. Sanit. Zool.

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Previous records of Sri Lankan Anopheles were most imperfect, and even the number and names of the species present were very doubtful. There was no systematic study conducted for Sri Lankan adult anophelines since 1990. Therefore, the objective of this study was to explore the species abundance and morphological variations of anopheline mosquitoes in Sri Lanka. Entomological surveys were conducted on a monthly basis from June 2010 to December 2013 in Trincomalee District, using five entomological techniques. Entomological surveys identified a total of 131,804 mosquito specimens belong to 18 anopheline species. One of which was An. jeyporiensis, a species that was not in the checklist in Sri Lanka. Its basic morphological features are similar to the members in Myzomyia series under the subgenus Cellia. Following characteristics were used to confirm the species as An. jeyporiensis; Centre of the scutum covered with short oblong white scales extending back to scutellum; Vein R 1 usually with accessory pale spot on preapical dark (PD) area; Foretarsomere 1 with apical pale band nearly 2.0 width of tarsomere diameter.

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“…The species level identification, which required more resources, funds and time, was not attempted during this study but envisaged to be undertaken during a second phase of the project. The selected genera identified using standard keys were the Anopheles (malaria), Culex (filariaisis and Japanese encephalitis) and Aedes (dengue) (Amerasinghe, 1992;Amerasinghe, 1996;Amerasinghe 1990). …”

Section: Monitoring Of Wells and Water Bodies For Mosquito Vector Brementioning

confidence: 99%

Tsunami impacts on shallow groundwater and associated water supply on the East Coast of Sri Lanka: a post-tsunami well recovery support initiative and an assessment of groundwater salinity in three areas of Batticaloa and Ampara Districts.

Villholth¹,

Amerasinghe²,

Jeyakumar³

et al. 2005

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A post-tsunami well recovery support initiative and an assessment of groundwater salinity in three areas of Batticaloa and Ampara Districts Bürgi, ETH, Zürich, Switzerland D.M.D.S. Lionelrathne, IWMI N.G. Indrajith, IWMI S.R.K. Pathirana, WRB 1 Contact E-mail k.villholth@cgiar.org IWMI receives its principal funding from 58 governments, private foundations, and international and regional organizations known as the Consultative Group on International Agricultural Research (CGIAR). Support is also given by the Governments of Ghana, Pakistan, South Africa, Sri Lanka and Thailand. I n t e r n a t i o n a l Water Management I n s t i t u t eAcknowledgements: This project has been funded mainly through CARE International Sri Lanka. The research team appreciates their financial and logistic support. The National Science Foundation of the USA generously granted access to the in-situ probe used for field monitoring of salinity. Mr. Erik Eriksen is acknowledged for his continuous support for the technical aspects of the monitoring.Ms. W.M. Chulani L. Wijethilake, Open University, helped in the digitization of the field data.We want to thank the many local well owners for their patience and collaboration during our recurrent visits to their residences during these times of severe hardship. Officers from government and local authorities, international agencies and NGOs working on the East coast extended their support in numerous ways to the project and we recognize their valuable inputs and cooperation. ............................................................................................................... 62 Appendix A ................................................................................................................. 64 Information on well cleaning ........................................................................................... Executive SummaryThe major tsunami of December 26, 2004 that hit many South Asian countries bordering the Bay of Bengal severely devastated the coastal regions of Sri Lanka. A key concern is the nature and extent of the tsunami impact on the water supply and, in more general, the water resources of these areas. In the coastal areas of Eastern Sri Lanka, the majority of the population, which is rural or semi-urban, is relying on groundwater for their domestic and agricultural activities, most predominantly through traditional private shallow open dug wells in the sandy aquifers. As the tsunami destroyed practically all wells within the reach of the flood waves, access to freshwater for these people was suddenly cut off and interim alternatives had to be sought urgently in the form of freshwater trucked in from unaffected areas.Soon after the tsunami, massive efforts to clean the wells were initiated from a range of different actors in an attempt to rapidly return the water supply to normal conditions, or at least ameliorate the immediate impacts of the salinization of the wells. Based on indications that these efforts were uncoordinated, inadequate, ineff...

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A guide to the identification of the anopheline mosquitoes of Sri Lanka.111. Pupae

Cited by 34 publications

References 4 publications

Malaria vectors in a traditional dry zone village in Sri Lanka.

Malaria vectors in a traditional dry zone village in Sri Lanka.

Appearance of <i>Anopheles jeyporiensis</i> James from Sri Lanka

Tsunami impacts on shallow groundwater and associated water supply on the East Coast of Sri Lanka: a post-tsunami well recovery support initiative and an assessment of groundwater salinity in three areas of Batticaloa and Ampara Districts.

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