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Dr. Nayana Nilakarawasam

BSc (Colombo), Ph.D. (University of Stirling), M.I.Biol (SL)

Senior Lecturer (Grade I)

Department of Zoology
  • Central Campus, Ground floor, Science and Technology building, Room No : E09
  • Office: 112881018, Ext: 518
  • nnila@ou.ac.lk

Fish Parasitology and Pathology

Fish Parasitology, Aquatic Resource Management
  • Senior Lecture (Gr. 1) in Zoology in the Department of Zoology of the Open University of Sri Lanka since June 17, 1999
  •  Senior Lecturer (Gr. 11) in Zoology in the Department of Zoology of the University of Ruhuna (June, 1993 – June, 1999)
  •  Lecturer in Zoology in the Department of Zoology of the University of Ruhuna (August 1986 – June, 1993)
  •  Temporary lecturer in Zoology in the Department of Zoology of University of Colombo (November, 1985 – July, 1986)

Head, Department of Zoology, The Open University of Sri Lanka (June 2009 – May 2012)

Programme Coordination:
Advanced Certificate in Laboratory Technology (2003 – 2008)

Course Coordination:
ZYU4302 – Animal Development- Developmental Biology of animals (1999 – 2007), Animal Development (2006 – to date)
Evolution (1999 – 2017)
Zoology Research Project (2002-2004)
Laboratory Techniques in Biology (2003 – 2006)
Basic Biology for Laboratory Techniques (2008-2014)
ZYPA606 – Aquatic Resources & their Management- for M.Sc. in Environmental Science (2006 – to date)
Advanced Laboratory Techniques (Special degree students)
Literature Survey (Special degree students)

  • Nilakarawasam, N. & Sommerville, C. 1998. The parasites of Etroplus suratensis (Bloch) (Pisces: Cichlidae and their effects on aquaculture management. Sri Lanka Journal of Aquatic Sciences 3: 11-26.
  •  Perera, H.G.R.W., Wattevidanage, J. & Nilakarawasam, N. (2011). Development of a Macro-invertebrate-based Index of Biotic Integrity (MIBI) for Colombo-Sri Jayawardenapura canal system. Journal of Tropical Forestry and Environment 2: 10-19
  • Dissanayake, D.M.L.C., Nilakarawasam, N., Somaratne, S., Weerakoon, S.R. Ranasinghe, C. (2019). Effect of Phyllanthus maderaspatensis L. crude methanolic extract on diet induced hypercholesterolemia in Wistar albino rats (Mus norvegicus albinus). Ceylon Journal of Science 48 (3), 285-291.
  • Thathsarani, N., Nayanajeehwi, G., Jayawardena, U.A., Nilakarawasam, N.  Jayasinghe, C.D. (2020) Cancer chemoprevention through functional food of plant origin, Asian Journal of Pharmacy and Pharmacology 6(2): 132-143.
  •  Nayanathara T., Jayasinghe, C.D., Jayawardene, U. & Nilakarawasam, N. (2021) Effect of oral administration of the fresh juice of Bamboo (Bambusa vulgaris) young shoots on enumeration of bone marrow cells, platelets, splenocyte and phagocytic activity of peritoneal macrophages of rats. Phytomedicine Plus; (3), 100059

 

  • Nilakarawasam, N. & Yapa, P.M.S.P. (1996). The parasite fauna of catfishes, Arius jella & Mystus gulio. Proceedings of 52nd Annual Session of SLASS: P 141.
  • Nilakarawasam, N. (1997). The water chemistry experienced by the endemic fish of Nilwala basin. Proceedings of 53rd Annual Session of SLASS: P 241.
  • Deepanada, A. & Nilakarawasam, N. (2000). The parasites of the Puntius species in Nilwala basin. Presented at the 6th Annual Sessions of Sri Lanka Association for Fisheries and Aquatic Resources.  29th June 2000
  • Nilakarawasam, N. (2001). Assessment of toxicity levels of nitrites to five endemic fish species of Sri Lanka. Presented at the 7th Annual Sessions of Sri Lanka Association for Fisheries and Aquatic Resources.28th June 2001
  • Mendis, T.D.H. & Nilkarawasam, N. (2004). The distribution and micro-habitat preferences of the fishes in a selected stream of Benthota River. Proceedings of the OUSL Annual Academic Sessions, P.22
  • Nithyakala, N., Nilakarawasm, N. & Wattevidanage, J. (2011). A preliminary study of the heavy metal pollution in the sediments of the Greater Colombo canal system of Sri Lanka. Proceedings of the OUSL Annual Academic Sessions, 14-15 September 2011, 303-306
  • Perera, H.G.R.W., Wattevidanage, J. & Nilakarawasam, N. (2011). Diversity, Abundance and distribution of macro-invertebrates in Colombo canal system and the potential of using them as bioindicators for stream health monitoring. Proceedings of the OUSL Annual Academic Sessions, 14-15 September 2011, 262-265
  • Tantrigoda, R.U., Bandarage, G., Navaratne, C., Nilakarawasam, N., Rajendra, J.C.N., Wickramasinghe, B.L., de Zoysa, M.N.K. (2012) Evaluating the success of assessments of a Level 3 course in the B.Sc. degree programme of the Open University of Sri Lanka (OUSL) as a tool of measuring the cognitive skills of students: A preliminary Survey, International Conference of Chemical Sciences, 20-22 June 2012, Colombo.
  • Nilakarawasm, N. (2013). A study on student participation in an online supplementary course in Zoology. Proceedings of the OUSL Annual Academic Sessions, 28-29 November 2013, 173-177
  • Ranasinghe, T.S., Nilakarawasam, N. (2014). An Assessment of Water Quality and Pollution in Beruwala Fishery Harbour in Sri Lanka. 19th International Forestry and Environment Symposium 24-25 Oct. 2014, Pg. 117
  • Kalpani, P. G. M., Weerakoon, S., Somaratne, R. S., Nilakarawasam, N., Ranasinghe C. (2016). Effect of methanolic extracts of barks of Phyllanthus reticulatus and Bridelia retusa on serum lipid profiles in hypercholesterolemic rats (Mus norvegicus albinus) Proceedings of the OUSL Annual Academic Sessions, 17-18 November 2016, 57
  • Kalpani, P. G. M., Weerakoon, S., Somaratne, R. S., Nilakarawasam, N. Ranasinghe C. (2017). A preliminary study on the evaluation of hypocholesterolemic activity of some Phyllanthus species, Proceedings of the 4th Ruhuna International Science and Technology Conference 26 Jan. 2017, Pg. 28
  • Dissanayaka, D.M.L.C., Weerakoon, S., Somaratne, R. S., Nilakarawasam, N., Ranasinghe C. (2017). Effect of crude methanolic extracts of Emblica officinalis on cholesterol induced Wistar Albino rats, Proceedings of the OUSL Annual Academic Sessions, 16-17 November 2017, 415-418
  • Dissanayaka, D.M.L.C., Weerakoon, S., Somaratne, R. S., Nilakarawasam, N., Ranasinghe C. (2018). Anti-hypercholesterolemic activity of Phyllanthus reticulates (Wel Kyla) and Glochidion zeylanicum (Hunukirilla) methanolic extracts on Wistar albino rats (Mus norvigicus albinus) Proceedings of the 5th Ruhuna International Science and Technology Conference 15 Feb. 2018, Pg. 28
  • Thathsarani A.A.D.N., Jayasinghe C.D., Jayawardena U.A & Nilakarawasam, N (2018) Immunosuppressive activity of fresh juice of Bambusa vulgaris young shoots in rat. Asian Symposium of Medical Plants, Spices and other natural products XVI. (Poster Presentation)
  •  Thathsarani, A.A.D.N., Jayasinghe, C.D., Jayawardena U.A., Nilakarawasam, N. (2019). Immunomodulatory effects of fresh juice of Bambusa vulgaris young shoot. Proceedings of the Annual Research symposium, Open University of Sri Lanka. Pp 15.
  •  Dissanayaka D.M.L.C., Nilakarawasam, N., Weerakoon S.R., Somaratne, S., & Ranasinghe, C. (2020).  Anti-hypercholesterolemic activity in plant species of the family Euphorbiaceae on cholesterol induced Wistar albino rats, Proceedings of the Annual Research symposium, Open University of Sri Lanka. Pp .            
  •  Samarakoon, P.S., C. D. Jayasinghe, C.D., Jayawardena, U.A., Nilakarawasam, N. (2021). Glycemic, Lipidemic and Immunomodulatory effects of fenugreek (Trigonella foenum graceum) seed consumption on male albino Wistar rats. Proceedings of the OUSL Annual Academic Sessions, 16-17 September 2021
  •  Nayanakanthi Nilakarawasam, Radhika De Silva, Dusantha Alwis, Thejani Bulathwatta, Ransirini De Silva, R.A.N. Dilsha and Bandunee Athapattu (2021)
  • Developing a Proactive Motivational Individual student support system at OUSL: A preliminary Study for identification of individual factors. 34th Annual Conference of the Asian Association of Open Universities – Vol II (2021) 503-508

Senior Lecturer in Zoology

Department of Zoology
Faculty of Natural Sciences

The Open University of Sri Lanka

  • Resource person for the workshops on “Diseases of Ornamental Fish” Organized by Sri Lanka Association for Fisheries and Aquatic Resources and National Aquatic Resources Agency for ornamental fish farmers. 29th Nov. – 1st Dec. 1995; 20th – 22nd July 1998, 26th -27th March 1999.
  • Resource person for the Panel Discussion on “Tetrahymena Disease in Guppies” organized by Sri Lanka Association for Fisheries and Aquatic Resources and Sri Lanka Association for Advancement of Science (Section D) on May 20, 1999.
  • Executive committee member of Sri Lanka Association for Aquatic Resources (SLAFAR): June1996 – June 1997
  • Member of the Editorial Board of Sri Lanka Journal for Aquatic Sciences – 1997 issue
  •  A Chief Examiner for G.C.E. (A/L) evaluation (Zoology) in 1994, 1998 – 2000, 2004-2006
  •  Vice-president of SLAFAR from June 2000 – June 2002
  • Kirthisinghe Memorial Scholarship for best performance in Zoology at First and Second Year Examinations of undergraduate studies
  •  Scholarship awarded by Overseas Development Authority of UK to pursue studies for the doctoral degree under Stirling-Ruhuna Link Programme

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