DSpace Home
→
Recent submissions

Research Repository: Recent submissions

Now showing items 3521-3540 of 10273

Molecular and biochemical characterization of a sand fly population from Sri Lanka: Evidence for insecticide resistance due to altered esterases and insensitive acetylcholinesterase

Surendran, S.N.; Karunaratne, S.H.P.P; Adams, Z; Hemingway, J; Hawkes, N.J (CAB International, 2005)

With an increasing incidence of cutaneous leishmaniasis in Sri Lanka, particularly in northern provinces, insecticide-mediated vector control is under consideration. Optimizing such a strategy requires the characterization ...
Molecular characterization and identification of members of the Anopheles subpictus complex in Sri Lanka

Surendran, S.N.; Sarma, D.K; Jude, P.J; Kemppainen, P; Kanthakumaran, N; Gajapathy, K; Peiris, L.B; Ramasamy, R; Walton, C (BioMed Central Ltd, 2013)

Background: Anopheles subpictus sensu lato is a major malaria vector in South and Southeast Asia. Based initially on polytene chromosome inversion polymorphism, and subsequently on morphological characterization, four ...
Anopheles culicifacies Y-chromosome dimorphism indicates sibling species (b and e) with different malaria vector potential in Sri Lanka

Surendran, S.N.; Abhayawardana, T.A; De Silva, B.G.D.N.K; Ramasamy, R; Ramasamy, M.S (2000)

In Sri Lanka, malaria is transmitted mainly by Anopheles culicifacies Giles sensu lato (Diptera: Culicidae). In India, this nominal taxon comprises sibling species A, B, C, D and E, distinguished by their chromosome ...
Genetic evidence for malaria vectors of the Anopheles sundaicus complex in Sri Lanka with morphological characteristics attributed to Anopheles subpictus species B

Surendran, S.N.; Singh, O.P; Jude, P.J; Ramasamy, R (BioMed Central Ltd, 2010)

Background: Anopheles subpictus sensu lato, a widespread malaria vector in Asia, is reportedly composed of four sibling species A - D. Mosquitoes morphologically identified as belonging to the Subpictus complex were collected ...
Seasonality and insecticide susceptibility of dengue vectors: An ovitrap based survey in a residential area of northern Sri Lanka

Surendran, S.N.; Kajatheepan, A; Karunakaran, F.A; Sanjeefkumar; Jude, P.J (Southeast Asian Journal of Tropical Medicine and Public Health, 2007-03)

With the backdrop of a high incidence of dengue in Jaffna District, Sri Lanka, an ovitrap based survey was carried out from May 2005 to April 2006 in a residential area to study the seasonality and Insecticide susceptibility ...
Description of sandfly (diptera: Psychodidae: Phlebotominae) species from genus Sergentomyia (Franca and parrot, 1920) in Sri Lanka

Gajapathy, K; Surendran, S.N. (Academic Journals Inc, 2012)

Leishmaniasis, mainly Cutaneous Leishmaniasis (CL), is a major public health concern in Sri Lanka. Although, the vector for any form of the disease is yet to be clearly discriminated in the country, a limited study reported ...
Molecular evidence for the presence of malaria vector species a of the Anopheles annularis complex in Sri Lanka

Surendran, S.N.; Gajapathy, K; Kumaran, V; Tharmatha, T; Jude, P.J; Ramasamy, R (BioMed Central Ltd, 2011)

Background: Anopheles annularis s.l. is a wide spread malaria vector in South and Southeast Asia, including Sri Lanka. The taxon An. annularis is a complex of two sibling species viz. A and B, that are differentiated by ...
Variations in susceptibility to common insecticides and resistance mechanisms among morphologically identified sibling species of the malaria vector Anopheles subpictus in Sri Lanka

Surendran, S.N.; Jude, P.J; Weerarathne, T.C; Karunaratne, S.H.P.P; Ramasamy, R (2012-02-10)

Background: Anopheles subpictus s.l., an important malaria vector in Sri Lanka, is a complex of four morphologically identified sibling species A-D. Species A-D reportedly differ in bio-ecological traits that are important ...
Anopheles culicifacies sibling species B and E in Sri Lanka differ in longevity and in their susceptibility to malaria parasite infection and common insecticides

Surendran, S.N.; Ramasamy, M.S; De Silva, B.G.D.N.K; Ramasamy, R (The Royal Entomological Society, 2006)

Members of the Anopheles culicifacies Giles complex (Diptera: Culicidae) are well established as the predominant vectors of malaria in Sri Lanka. Until recently, only sibling species B was reported to be present in Sri ...
Some characteristics of the larval breeding sites of Anopheles culicifacies species B and E in Sri Lanka

Surendran, S.N.; Ramasamy, R (Journal of Vector Borne Diseases, 2005-06)

Background & objectives: Anopheles culicifacies Giles, the major malaria vector in Sri Lanka, exists as a species complex comprising two sympatric sibling species-species B and E. Species E is reported to be the major ...
Some aspects on the feeding of Gerres oblongus (Cuvier, 1830) dwelling from the Jaffna lagoon

Abyerami, B; Sivashanthini, K (Asian Network for Scientific Information, 2008)

A total of 179 fishes of Gerres oblongus (Cuvier, 1830) ranging in standard length 40 to 169 mm were collected in the morning from four collection sites in tire Jaffna lagoon. The stomach contents were assessed qualitatively ...
Molecular studies of Anopheles culicifacies (Diptera: Culicidae) in Sri Lanka: Sibling species B and E show sequence identity at multiple loci

Surendran, S.N.; Hawkes, N.J; Steven, A; Hemingway, J; Ramasamy, R (2006)

The anomaly that Anopheles culicifacies (Diptera: Culicidae) species B is a major vector of malaria in Sri Lanka, but a non-vector in India, has been noted for several years. In 1999, a Y chromosome dimorphism associated ...
The anopheles culicifacies and an. subpictus species complexes in Sri Lanka and their implications for Malaria control in the country

Surendran, S.N.; Ramasamy, R (The Japanese Society of Tropical Medicine., 2010)

Anopheles culicifacies, the major vector of malaria in Sri Lanka, and An. subpictus, a secondary vector, exist as species complexes in the country. Among the globally reported five sibling species (A-E) of the An. culicifacies ...
Morphometric and meristic characterization of Phlebotomus argentipes species complex in northern Sri Lanka: Evidence for the presence of potential leishmaniasis vectors in the country

Gajapathy, K; Jude, P.J; Surendran, S.N. (2011)

The transmission of cutaneous leishmaniasis (CL) is of public health concern in Sri Lanka. The parasite Leishmania donovani is reported to be the causative agent for CL in Sri Lanka. However there is no report on the vector ...
Perception and personal protective measures toward mosquito bites by communities in Jaffna District, northern Sri Lanka

Surendran, S.N.; Kajatheepan, A (The American Mosquito Control Association, Inc, 2007-06)

Mosquito-borne diseases are of public health importance in war-torn northern Sri Lanka. The severity of mosquito bites and attitudes of the public toward mosquito problems were investigated using a structured questionnaire ...
A note on the larvicidal efficacy of saponin constituted crude extracts of plant and animal origin against Aedes aegypti l.

Surendran, S.N.; Kumaran, V; Sivarajah, R; Krishnarajah, S.R; Srikaran, R; Raghavendra, K (Journal of the National Science Foundation of Sri Lanka, 2009)

Natural products of plant and animal origin are preferred over synthetic insecticides due to their eco-friendly nature. The use of natural products and their derivatives are being advocated for the control of insect vectors ...
Morphometric description of sandflies belong to genus Sergentomyia (Sergentomyia) (Diptera; Psychodidae; Phlebotominae) in Sri Lanka; evidence for the presence of Sergentomyia (Sergentomyia) pondicherriensis and Sergentomyia (Sergentomyia) dentata in the country

Gajapathy, K; Surendran, S.N. (Academic Journals Inc, 2011)

Leishmaniasis, mainly a zoonotic disease vectored by sand flies, emerges as major public health concern in Sri Lanka. The role of the old world sandfly genus Sergentomyia in the disease transmission is emphasized in recent ...
Predatory efficacy of culex (Lutzia) fuscanus on mosquito vectors of human diseases in Sri Lanka

Surendran, S.N.; Jude, P.J; Thavaranjit, A.C; Eswaramohan, T; Vinobaba, M; Ramasamy, R (The American Mosquito Control Association, Inc., 2013-06)

Larvae of Culex (Lutzia) fuscanus were collected from ovitraps in a natural breeding site. Collected larvae were used to establish a self-mating colony, and larval progeny were then used to determine their predatory efficacy ...
Report of the presence of phlebotomus (phlebotomus) salehi mesghali in Sri Lanka: A potential cutaneous leishmaniasis vector

Gajapathy, K; Surendran, S.N. (BioMed Central Ltd, 2012)

Cutaneous leishmaniasis (CL) is emerging as a serious public health threat in Sri Lanka and more than 2000 cases have been reported during the past nine years. The parasite responsible for CL has been identified as Leishmania ...
Strain gradient influences on apparent dependences of hydrogen diffusion coefficients on hydrogen content in the Pd81Pt19H n system

Kandasamy, K; Tong, X.Q; Lewis, F.A (Elsevier B.V., 1992)

Consolidating studies are reported of 'uphill hydrogen diffusion' effects produced by lattice strain gradients during hydrogen permeation through tubular membranes of a Pt81Pt19 alloy at 25 degrees C. Hydrogen permeation ...

Now showing items 3521-3540 of 10273

Search DSpace

Advanced Search

Browse

All of DSpace

Recently added

Research Repository: Recent submissions

Search DSpace

Browse

All of DSpace

My Account