Prof. H.T.R. Jayasooriya

Professor of Zoology

Faculty of Natural Sciences
Website RG

Select, Ground floor, Science and Technology building, Room No : 8

Office: 112881292, Ext: 292



As an academic….

Senior Professor of Zoology – from 2018 – upto now

Professor of Zoology – from 2013 – 2018

Professor in Zoology – from 2010 – 2013

Senior Lecturer in Zoology – from 1989 – 2010

Lecturer in Zoology – from 1981- 1989

Involved in Academic admistration ………

Dean Faculty of Natural Sciences, OUSL from 2007 – 2009

Head Departement of Zoology from 1993- 1996 & from 2000 – 2003

Chairperson Quality Assurance Committee & Director, Internal Qulaity Asurance Unit (IQAU) from 2011 upto now

Areas of Specialization:

Entomology, Environmental Sciences & Insecticide resistance monitoring

Research interests:

Bionomics of mosquitoes, Biochemistry of Insecticide Resistance &Environmental Education



Programme Coordination:

Programme Coordinator of Masters in Medical Entomology & Applied Parasitology, 2013- 2016

Course Coordination:

Undergraduate level – Entomology ZYU5306, Management of Insect pests and Vectors ZYU6300, Research Methdology ZYU5313
Post graduate level – Arthropods of Medical and Veterinary Importance ZYP8301. Vector Control ZYPA412, Reserarch Methodology and Communication Skills ZYPA314


Jayasooriya, Thusitha,  Jayasinghe, Chanika,  Jayatilleke, Gayathri,  Ranawaka, Gaya (2019)  Perceptions of Postgraduate Alumni on Knowledge and Enhancing Skills: Experience of the Open University of Sri Lanka ,  OAsis, COL’s Open Access Repository,

Seneviratne, BYH, Jayasooriya HTR. (2019)Effect of insecticide space apray treatment against vectors of Dengue fever and its impact on other insect population in Galle municipal council area, Sri Lanka Proceedings of 39th Annual Sessions of the Institute of Biology, p 78

G. Gayan Dharmasiri, A. Yashan Perera, Jeevanie Harishchandra, Hemantha Herath,Kandasamy Aravindan, H. T. R. Jayasooriya, Gaya R. Ranawaka, Mihirini Hewavitharane (2017) First record of Anopheles stephensi in Sri Lanka: a potential challenge for prevention of malaria reintroduction Malar J (2017) 16:326

H. M. P. Hewavitharane, G. R. Ranawaka, M. D. J. S. Saparamadu, R. G. Premaratne and H. T. R. Jayasooriya (2017) Prevalence and Bionomics of Anopheles Species in a Gem Mining Area in Moneragala District of Sri Lanka Extended abstract, OUSL Annual Session, 2017

Hewavitharana, HMP, Saparamadu, MDJS, Premaratne, RG, Ranawaka, GR, Jayasooriya, HTR (2016) Receptivity for malaria transmission in a highly vulnerable district: a potential challenge for prevention of reintroduction efforts in Sri Lanka. Proceedings of 72nd Annual sessions of the SLAAS.

Heenatigala, RS, Seneviratne, NAMR, Jayasooriya, HTR. (2015) A study to assess the status of mosquito   breeding in larval breeding in larval habitats in Rummasala Hill in Galle District, Sri Lanka. Extended abstract, OUSL Annual Session, 2015

Perera, KMKJ, Jayasooriya, HTR, Ranawaka(2015)  GR Alternate sources of DNA for molecular identification of Aedes aegypti Extended abstract, OUSL Annual  Session , 2015

Halliday, MR, Illeperuma, RJ, Jayasooriya, HTR, Ranawaka, GR (2015) Evaluation of using human blood fed mosquitoes as forensic DNA evidence in crime investigation Abstract, Annual Scientific sessions, Medico-legal society, Sri Lanka

Sooriya Arachchi, Illeperuma, R. J., Jayasooriya, H.T.R., Ranawaka, G.R. (2013) Genetic characterisation of DNA barcode region of Aedes vectors in SriLanka. Proceedings of 33rd Annual Sessions of the Institute of Biology, p 24

Jayasooriya, H.T.R., Jayawardena. L (2012) Preliminary studies on the effect of temperature stress on the reproductive performance of dengue vector, Aedes aegypti in Sri Lanka and its susceptibility to insecticides Proceedings of the Annual Academic Sessions of the Open University of Sri Lanka, p191

Jayasooriya, H.T. R., Bandarage, G., Lister, S., Jayathilleke, B. G., (2008) Instructional design models incorporating information and communications technology for wider access of learners to educational opportunities at the Open University of Sri Lanka, 5th Pan Commonwealth Forum, London

Aryaprema, S., Jayasooriya T, Hemingway, J (2005) A Comparative study on the effect of three larvicides against the density of Culex quinquefasicatus, vector of filariasis in Sri Lanka, National Symposium on Mosquito Control, PGIS, University of Peradeniya

Karunayake, S, Pallewatta N. Jayasooriya, T., Jayamannea S.C. (2005) Environmental Education via field-based activities: teachers as changed agents.  Proceedings of the 61st Annual Academic sessions, St Lanka Association for the Advancement of Science.

Aryaprema, S., Jayasooriya T, Hemingway, J (2004) The abundance and insecticide resistance levels of the filariasis vector Culex quinquefasciatus in three selected areas in the western province, Sri Lanka.  Proceedings of the Second Annual Academic Sessions of the Open University of Sri Lanka

Jayasooriya H T R and Weerasinghe, I S (2004) Status of insecticide resistance in mosquito vectors of Dengue fever, Aedes aegypti and Aedes albopictus in Sri Lanka. (accepted for presentation at the forthcoming, SLAAS sessions.

Karunanayake, S. & Jayasooirya, H.T.R (2003) Novel Approaches to Environmental Education in Sri Lanka. Paper read at the Academic sessions at OUSL.

Amila Samanthi, M. P., De Silva, S.D., Jayasooriya H. T. R. & Nugaliyadda, L.,     2003, Insecticide resistance in the stored rice pest, Sitophilus oryzae (Coleoptera; Curculionidae), to pirimiphos-methyl and permethrin in Sri Lanka, International workshop on Technology of application of pesticides, Organized by The center for science and Technology of Non-Aligned and other Developing Countries &National Science & Technology Commission (NASTEC), 23-26th of June 2003, Kandy, Sri Lanka.

Rajapakse, R.L.H.R., De Silva, S.D., Jayasooriya, H.T.R., 2001, Preliminary studies on esterase related resistance and taxonomic status of Rhynchophorus ferrugineus Oliv. (Coleoptera; Curculionidae) populations collected from five areas of the coconut triangle in Sri Lanka, Sri Lanka, Association for the Advancement of Science 57th Annual sessions, University of Moratuwa, Moratuwa, Sri Lanka, 26-30th November 2001.

Gunaherath, G.M.K.B., Ratnayake, R. Jayasooriya. H.T.R. and Wijesundera, R.L.C. (2001) bioactivity Studies of Pteris ensiformis Burm. Paper presented at the Annual Sessions of the Institute of Chemistry, Sri Lanka.

Dassanayake, V.D.and Jayasooriya, H.T.R. (2000) Effect of Fenthion on the resistance development of Culex quinquefasciatus field populations. Proceedings of the 56th Annual Sessions of the Sri Lanka Association for the Advancement of Science.

Dassanayake, V.D.and Jayasooriya, H.T.R. (2000) Larval resistance of Culex quinquefasciatus to two organophosphorus insecticides, chlorpyrifos and temephos Proceedings of the 56th Annual Sessions of the Sri Lanka Association for the Advancement of Science.

McCarroll, L., Paton, M.G., Karunaratne, S.H.P.P., Jayasuriya, H.T.R., Kalpge, K.S.P. and Hemingway, J. (2000) Insecticides and mosquito borne diseases, Nature, 407: 961 –962.

Peiris H.T.R. and Hemingway J. (1996) The effect of fenthion treatment on larval densities of insecticide resistant Culex quinquefasciatus in an urban area of Sri Lanka.  Med.Vet. Entomol 10:283-287.

Peiris H.T.R. and Hemingway J. (1993) Characterization and inheritance of elevated esterases in organophosphorus and carbamate insecticide resistant Culex quinquefasciatus (Diptera:Culicidae) from Sri Lanka.  Bull. Ent. Res. 83:127-132.

Amin A.M. and Peiris H.T.R. (1990) Detection and selection of organophosphate and carbamate resistance in Culex quinquefasciatus from Saudi Arabia. Med. Vet. Entomol. 4:269-273.

Peiris H.T.R. and Hemingway J. (1990) Tmephos resistance and the associated cross-resistance spectrum in a strain of Culex quinquefasciatus say (Diptera:Culicidae) from Peliyagoda, Sri Lanka. Bull. Ent. Res 80:49-55.

Pieris H.T.R. and Hemingway J. (1990) Mechanisms of insecticide resistance in a temephos selected Culex quinquefasciatus (Diptera: Culicidae) strain from Sri Lanka. Bull. Ent. Res. 80:453-457.

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