Courses-Level-4M
Effective from the Academic Year 2018/2019
Unit Code | Unit Title | Credit Value | Hourly breakdown | Notional Hours | ||||
Theory | Mentering | Practical/ Field visit | Independent Learning | |||||
FIS401M3 | Marine Ecology and Limnology | 3 | 45 | – | – | 105 | 150 | |
FIS402M3 | Fish Physiology and Biochemistry | 3 | 45 | – | – | 105 | 150 | |
FIS403M3 | Aquaculture and Hatchery Techniques | 3 | 45 | – | – | 105 | 150 | |
FIS404M3 | Fish Genetics and Biotechnology | 3 | 45 | – | – | 105 | 150 | |
FIS405M2 | Fisheries Practical III | 2 | — | – | 60 | 40 | 100 | |
FIS406M2 | Fisheries Practical IV | 2 | — | – | 60 | 40 | 100 | |
FIS407M6 | Research Project | 6 | — | 20 | — | 580 | 600 | |
FIS408M2 | Current Topics in Fisheries | 2 | — | – | — | 100 | 100 | |
FIS409M2 | Advanced Fisheries Statistics | 2 | 15 | – | 30 | 105 | 150 | |
FIS410M2 | In Field Training | 2 | – | – | 60 | 140 | 200 | |
FIS411M2 | Fisheries Socioeconomics | 2 | 15 | – | 30 | 105 | 150 | |
Total | 30 |
FIS401M3: Marine Ecology and Limnology
Course Title | Marine Ecology and Limnology | |
Course Code | FIS401M3 | |
Credit Value | 3 | |
Core/Elective | Core | |
Hourly Breakdown | Theory | Independent Learning |
45 | 105 | |
Objectives | ||
·Provide detailed knowledge on important concepts of marine ecology and limnology ·Analyze the interaction of organisms with aquatic environment | ||
Intended Learning Outcomes | ||
● xplain the abiotic and biotic factors of marine and freshwater ecosystems ●Discuss the ecological aspects on migration, biological clock, succession, stratification and zonation of biota ● Elaborate the biology and importance of the marine and freshwater biota ●Appraise the interaction of organisms with marine and freshwater environment ●Analyse the difference of ecological perspectives between marine and freshwater environment | ||
Course Content | ||
Nature of ecosystems, energy flow and cycles; Ecological factors: temperature, light, etc.; Organization and dynamics of some aquatic ecosystems; Estimation of production; Some ecological consideration: migration, biological clock, succession, stratification and zonation of biota; Biotic characters: Planktonic communities, algae, holoplankton and mesoplankton types, bacteria, and interactions; Littoral Communities, algae, zooplankton, Seagrass, coral reef; Microflora; Benthic communities (Fish, etc.); El Niño, la Niño and tsunami concepts. Lentic and Lotic ecosystems; Abiotic characters: Illumination, bioluminescence, Temperature Stratifications, Turbidity, Currents; Dissolved Oxygen, Salinity, Carbon, Nitrogen, Phosphorus, Iron, Sulfur and Silica cycles, Organic Carbon cycle; Freshwater invertebrates; Freshwater zooplankton, Ostracods, Free living meso, macro crustaceans; Mountain stream fauna, mollusks; Freshwater insects: Ephemeroptera, Diptera; River continuum concept. | ||
Teaching /Learning Methods | ||
Lecture, Teaching through smart Board, Modules, Photographs, Video clips, Online learning, Tutorial discussion, Breakout room discussion | ||
Assessment Strategy | ||
Theory: In – course assessment/s: 30% End of Course Examination 70% | ||
References | ||
● Lalli, C.M. and Parsons, T.R., 2012. Biological Oceanography. Oxford: Butterworth-Heinemann ● Mann,K.H. and Lazier, J.R., 2003. Dynamics of Marine Ecosystem, 2nd ed. Blackwell Science. ● Lampert, W. and Sommer, U., 2007. Limnoecology, 2nd ed. Oxford University Press Inc, Oxford : New York |
FIS402M3: Fish Physiology and Biochemistry
Course Title | Fish Physiology and Biochemistry | |
Course Code | FIS402M3 | |
Credit Value | 3 | |
Core/ Elective | Core | |
Hourly Breakdown | Theory | Independent Learning |
45 | 105 | |
Objectives | ||
· Provide conceptual knowledge on fish physiological functions in relation to their living in water · Impart the knowledge based on biochemical structures in fishes | ||
Intended Learning Outcomes | ||
● Explain the concepts of diversity in structure and functions of different systems ● Discuss the different habits with emphasis on functional systems such as feeding, growth, reproduction and life history, and sensory systems ● Determine the food relationship of fish and stomach content analysis ● Elaborate the different types of fish migration and factors affecting it ● Describe the process of gas exchange, blood circulation and ion balance ● Illustrate the pattern of body movements of fish ● Assess the different bio molecules in fishes ● Compare different metabolism of bio molecules in fishes | ||
Course Contents | ||
Physiology of fish to include diversity in structure, functions and habits with emphasis on feeding, growth, reproduction and life history; Food supply and food relationship of fish and stomach content analysis – qualitative and quantitative; Fish migration; Respiration, Osmoregulation and ion balance, Gas exchange blood and the circulatory system; Buoyancy, Swimming; Sensory system and communication; Immune system; Nervous system; Biochemical functions of different Biomolecules (Carbohydrate, Protein, Fat and Nucleic acid), Metabolism of different biomolecules in fishes. | ||
Teaching and Learning Methods | ||
Lecture, Modules, Breakout room discussion, Flow charts, Models, Video clips, Online learning, Tutorial discussion | ||
Assessment Strategy | ||
Theory: In – course assessment/s: 30% End of Course Examination 70% | ||
References | ||
● Hoar, W.S. and Randall, D.J., 1983.Fish physiology, Academic Press. ● Sloman, K.A., Wilson, R.W. and Balshine, S., 2005. Fish Physiology: Behaviour and Physiology of Fish, Academic Press. |
FIS403M3: Aquaculture and Hatchery Techniques
Course Title | Aquaculture and Hatchery Techniques | |
Course Code | FIS403M3 | |
Credit Value | 3 | |
Core/ Elective | Core | |
Hourly Breakdown | Theory | Independent Learning |
45 | 105 | |
Objectives | ||
· Provide a holistic knowledge on the aquaculture principles and practices · Recognize relevant ethical, social and environmental issues related to aquaculture | ||
Intended Learning Outcomes | ||
● Discuss the recent developmental facilities of aquaculture ● Explain the concepts underpinning the design and operation of aquaculture practices ● Analyze the species‐specific culture requirements ● Distinguish the skills related to technical advancement in Aquaculture ● Evaluate the status of aquaculture in Sri Lanka and world ● Develop new techniques in hatchery and management system | ||
Course Contents | ||
Planning aquaculture facilities: site selection, production plan; Design and construction methods of fish farms, Pond Engineering, tanks, cages, and raceways; Equipment and methods of aeration and oxygenation of culture water; Economic principles in aquaculture practices, Culture based capture fisheries; management and feasibility reports; Importance of hatchery and nursery techniques, investments required; Water quality for aquaculture and instrumentation; Methods of particle removing in aquaculture, Ammonia removal in aquaculture; Techniques of breeding and larval rearing of fish and shrimps; Nursery ponds managements including packing and transport of live fish and fish seeds; Hatchery designs; Egg storage and hatching equipment (incubators, troughs etc.); Closed production units-Recirculating aquaculture systems (RAS); Self-cleaning process, ideal and non- ideal mixing; Disinfection methods in aquaculture; Feeding systems; Crab fattening. | ||
Teaching and Learning Methods | ||
Lecture, Group activity, Recitation oral questions, Poster presentation, Class projects, Online learning, Tutorial discussion | ||
Assessment Strategy | ||
Theory: In – course assessment/s: 30% End of Course Examination 70% | ||
References | ||
● Pillay, T. and Kutty, M., 2009. Aquaculture, Oxford: Blackwell. ● Allan, G. and Burnell, G., 2013. Advances in aquaculture hatchery technology, Oxford [etc.]: Woodhead |
FIS404M3: Fish Genetics and Biotechnology
Course Title | Fish Genetics and Biotechnology | |
Course Code | FIS 404M3 | |
Credit Value | 3 | |
Core/ Elective | Core | |
Hourly Breakdown | Theory | Independent Learning |
45 | 105 | |
Objectives | ||
· Provide conceptual knowledge on principles of fish genetics and biotechnology, diagnostic aid in the detection of genetic changes · Provide knowledge on principles and application with the advanced biotechnological techniques in fisheries management and aquaculture | ||
Intended Learning Outcomes | ||
● Explain the aspects of basic molecular biology of fish DNA ● Illustrate Policies and framework for a safer and sustainable fish molecular technology ● Analyze the impact of past molecular technologies on aquaculture management ● Describe the advanced molecular technologies in aquaculture and fisheries ● Discuss the advanced biotechnological techniques ● Interpret advanced biotechnology in aquaculture and fisheries | ||
Course Contents | ||
Mendelian laws of inheritance: DNA and Chromosomal basis of inheritance, Identification and inheritance of qualitative and quantitative traits, Genes and Genome; Basics in Molecular biology: Structure and Function of DNA, Analysis of Genes and Genome, Basics in population genetics: Phenotypic and Genotypic variation, Partitioning of Variance; Environmental effect, Heredity; Genetics in fish breeding: Selective Breeding, Chromosomal manipulation (Gynogenesis, Androgenesiys, Polyploidy), Hybridization, Sex reversal; Biotechnology in Aquaculture systems: Biosecurity applications, Control of algal blooms; Biotechnology in Health management: Fish immunology, Vaccination, Probiotics; Disease diagnostic methods, Advanced biotechnological techniques: Nucleic Acid hybridization, Cell culture and Cryopreservation, Genetic engineering techniques; Transgenic production, GMAOs, DNA fingerprinting, Cloning. | ||
Teaching and Learning Methods | ||
Lecture, Breakout room discussion, Recitation oral questions, Group activity, Class projects, Tutorial discussion, Online learning, Problem solving sessions and Computer labs. | ||
Assessment Strategy | ||
Theory: In – course assessment/s: 30% End of Course Examination 70% | ||
References: ● Dunham, R., 2011. Aquaculture and fisheries biotechnology, Wallingford: CABI. ● Beaumont, A., Boudry, P. and Hoare, K., 2010. Biotechnology and genetics in fisheries and aquaculture, Chichester, West Sussex: Wiley-Blackwell. |
FIS405M2: Fisheries Practical III
Course Title | Fisheries Practical III | |
Course Code | FIS405M2 | |
Credit Value | 2 | |
Core/ Elective | Core | |
Hourly Breakdown | Practical | Independent Learning |
60 | 40 | |
Objectives | ||
· Provide the practical skills related to sampling from marine water and freshwater ecosystems · Provide knowledge on conducting physiological and biochemical experiments in fish | ||
Intended Learning Outcomes | ||
● Demonstrate the sampling techniques in marine and fresh water ecosystems ● Demonstrate the ability to identify the key species that inhabit the marine inter tidal region, utilizing identification keys to distinguish closely related species ● Demonstrate the physiology of reproduction, respiration, digestion, excretion and osmoregulation in fish ● Analyze the proximate composition for fish muscle and their gut content, and fish feed | ||
Course Contents | ||
Sampling techniques; Species that inhabit the marine intertidal region; physiology of reproduction, respiration, digestion, excretion and osmoregulation in fish and shellfish; proximate composition for fish muscle and their gut content and fish feed; Different biomolecules in fish | ||
Teaching and Learning Methods | ||
Practical, Field work, Group activity, Class project, Maintaining notebook, e-learning, Laboratory experiments | ||
Assessment Strategy | ||
Practical: In – course assessment/s: 30% End of Course Examination 70% | ||
References: | ||
● Wootton, R.J.,1990. Ecology of teleost fishes, London: Chapman & Hall. ● Mann, K.H. and Lazier, J.R., 2003. Dynamics of Marine Ecosystem. 2nd ed. Blackwell Science. |
● Wootton, R.J.,1990. Ecology of teleost fishes, London: Chapman & Hall. ● Mann, K.H. and Lazier, J.R., 2003. Dynamics of Marine Ecosystem. 2nd ed. Blackwell Science. |
FIS406M2: Fisheries Practical IV
Course Title | Fisheries Practical IV | |
Course Code | FIS406M2 | |
Credit Value | 2 | |
Core/ Elective | Core | |
Hourly Breakdown | Practical | Independent Learning |
60 | 40 | |
Objectives | ||
Ø Provide the conceptual skills related to techniques on aquaculture and hatchery practices Ø Provide knowledge on fish genetics and biotechnology experiments on cultivable organisms | ||
Intended Learning Outcomes | ||
● Demonstrate the skills for site selection, design, construction of aquaculture system ● Evaluate the fish hatchery systems in Sri Lanka ● Analyze disease control measures in fish hatchery ● Express the transport of fish seeds ● Develop fish seeds production skills such as broodstock management, fertilisation and incubation of eggs, larval and fingerlings rearing ● Express the techniques in fish breeding, chromosomal genetics and genetic engineering ● Solve the sums related to fish genetics | ||
Course Contents | ||
Site selection, design, construct of aquaculture system; Manage fish hatchery and control of diseases in fish hatchery; transport fish seeds and develop fish seeds production; fish breeding, chromosomal genetics and genetic engineering in fish; Problems in fish genetics. | ||
Teaching and Learning Methods | ||
Practical, Field work, Case Study, Group activity, Class project, Notebook, e-learning, Laboratory experiments | ||
Assessment Strategy | ||
Practical: In – course assessment/s: 30% End of Course Examination 70% | ||
References | ||
● John, S.L., 2013. Aquaculture – Farming Aquatic Animals and Plants. Blackwell Publ. 2nd edition. ● Pillay, T.V.R. and Kutty, M.N., 2005. Aquaculture: Principles and Practices. 2nd Edition. Wiley-Blackwell Publ. ● Russel, P.J., 1998. Genetics, 5th edition. The Benjamin/ Cummings Publishing company, Inc. U.S. ● Griftiths, A.J., Miller, J.H., Suzuki, D.T., Lewontin, R.C. and Gelbart, W.H., 1996. An Introduction to Genetic Analysis, The W.H. Freeman and Company, U.S. |
Course Title | Research Project | |
Course Code | FIS407M6 | |
Credit Value | 6 | |
Core/ Elective | Core | |
Hourly Breakdown | Mentoring | Independent Learning |
20 | 580 | |
Objectives | ||
· Provide a holistic knowledge on a chosen research problem related to Fisheries Science · Analyze the literature survey and theoretical issues · Carry out an independent research project and present the findings | ||
Intended Learning Outcomes | ||
● Identify the topic ● Define a research problem related to Fisheries Science ● Review the literature for the identified research problem ● Formulate the objectives and methodology for the proposed research problem ● Evaluate the collected data for the respective research problem ● Interpret the data to solve the research problem ● Produce the project report ● Present the findings | ||
Course Contents | ||
A report on a research carried out by the student to be submitted for evaluation; Guided research project is an integral component of the degree programme; Students must identify a research topic in consultation with the Head / Senior Lecturer / Lecturer, at the beginning of fourth year; Each student will be assigned a supervisor; The duration of the project is one year parallel to the course; Students should make presentations at the beginning of research, in the middle, and at the end of their research; On completion of the research work a project report must be submitted within a stipulated period for evaluation; A soft bound copy of the report has to be submitted for examination purposes; Later, students will have to submit 03 hard bound copies (one for supervisor, one for Departmental Library and another one for Student); During their research period students are expected to maintain a research diary | ||
Teaching and Learning Methods | ||
Mentoring by supervisor, Laboratory work, Field work, Case study, Reading journals, e-learning, Recording, Photographs, Preparing report, Preparing presentation | ||
Assessment Strategy | ||
Oral presentation/s: Proposal presentation 10% Mid term presentation 10% Final presentation 20% Project Report 60% | ||
References: | ||
●Ford, E., 2004. Scientific method for ecological research, Cambridge Univ. Press.. ● Booth, W.C., Colomb, G.G., Williams, J.M., Bizup, J. and FitzGerald, W.T., 2016. The craft of research, Fourth edition. ed, Chicago guides to writing, editing, and publishing. The University of Chicago Press, Chicago. |
FIS408M2: Current Topics in Fisheries (Seminar)
Course Title | Current Topics in Fisheries (Seminar) |
Course Code | FIS408M2 |
Credit Value | 2 |
Core/ Elective | Core |
Hourly Breakdown | Independent Learning |
100 | |
Objectives | |
·Provide detailed knowledge on active learning, critical thinking and problem solving through a series of seminars involved on current issues in Fisheries ·Develop the skills on report writing and oral presentation | |
Intended Learning Outcomes | |
● Identify the references using library and e-resources to search current topics ● Formulate report/s on selected topic/s ● Make presentation/s ● Develop the ability of responding to questions | |
Course Contents | |
Students should read current journals and other scientific publications and each student should present the knowledge gained on any current topic related to Fisheries Science as an oral presentation, weekly. Students have to submit a report containing 3 to 4 pages on their selected topic. Students have to sit a written end of course examination on chosen topics among the topics they presented during the academic year. | |
Teaching and Learning Methods | |
Literature Survey, Oral presentation, Seminars, Use of books and e-resources, e-learning | |
Assessment Strategy | |
Theory: Oral Presentation 30% Report 10% End of Course Examination 60% | |
Suggested references | |
● Journals: Nature, Canadian Journal of Fisheries and Aquatic Sciences, Fishery Bulletin ● Magazines: Fisheries, Aquaculture, Marine conservation, National geography, NAGA |
FIS409M2: Fisheries Statistics
Course Title | Fisheries Statistics | ||
Course Code | FIS409M2 | ||
Credit Value | 2 | ||
Core/ Elective | Core | ||
Hourly Breakdown | Theory | Practical/Field work | Independent Learning |
15 | 30 | 55 | |
Objectives | |||
· Provide knowledge on general statistical approaches to qualitative and quantitative problems in marine science and fisheries with guidance · Describe how to collect and organize data, select appropriate statistical methods, analyze it using appropriate statistical softwares and communicate results | |||
Intended Learning Outcomes | |||
● Discuss the concepts of bio statistics with fisheries science examples ● Describe the advanced statistical approaches in fisheries and marine science research ● Apply appropriate statistical analysis to solve the research problems ● Interpret the results obtained in Fisheries and Marine Science research using appropriate statistical software | |||
Course Contents | |||
Elements of Probability: Experiments, Sample space, Laws of probability; Random Variables: Discrete and continuous random variables; Hypothesis testing, Z-distribution, t-distribution; One sample, two sample and paired ‘t’ tests; Linear regression and correlation; Introduction to Analysis of Variance; One way and two way ANOVA; Chi square test; Usage of computer based statistical packages for Fisheries Science data. | |||
Teaching and Learning Methods | |||
Lecture, Group activity, Practical, Problem solving, e-learning, Case study | |||
Assessment Strategy | |||
Theory(MT): In – course assessment/s: 30% End of Course Examination 70% Practical/ Field work (MP): In – course assessment/s: 30 % End Course Examination 70% Overall mark for the course = (3MT + 2MP)/ 5 | |||
References | |||
● Zar, J.H., 1998. Biostatistical Analysis. 4th Edition. Printice Hall Int. ● Jim Fowler, L.C. and Phil, J., 1998. Practical Statistics for Field Biology. John willey & sons Publ. |
Course Title | · In-Field Training | |
Course Code | · FIS410M2 | |
Credit Value | · 2 | |
Hourly Breakdown | · Practical | · Independent Learning |
· 60 | · 140 | |
Objective | ||
· Provide hands on practice, skill and attitude on fishery related training in an industry from government and private sectors | ||
Intended Learning Outcomes (ILO): | ||
· Discuss the institutional setup related to fisheries · Analyse the role of institutes in research and development in fisheries · Create professional network among the fisheries sector · Develop innovative solutions of different industries for national development issues in the aquatic resource sector | ||
Course Contents: | ||
· Students will be posted to suitable fisheries and aquaculture related institutions during the semester vacation. The Department of Fisheries will be constantly in contact with Government Departments, private sector, Corporations, Co – operative Societies and individuals in this regard. Students are expected to spend a minimum of two weeks and submit a report at the end of the in – field training. Oral presentation of every student will be evaluated. | ||
Assessment Strategy: | ||
· Evaluation report from the industrial supervisor 20% · Presentation 30% · Final Report on the training 50% | ||
FIS411M2: Fisheries Socioeconomics
Course Title | Fisheries Socioeconomics | ||
Course Code | FIS 411M2 | ||
Credit Value | 2 | ||
Core/ Elective | Core | ||
Hourly Breakdown | Theory | Practical/Field work | Independent Learning |
15 | 30 | 55 | |
Objectives | |||
· Provide knowledge and demonstrate the importance and principles of socioeconomics · Provide knowledge on problems among fishing community in order to help fishery managers in identifying the problems and managing the issues | |||
Intended Learning Outcomes | |||
● Explain the principles in fisheries socioeconomic ● Analyse the problems among fishing community ● Design co-management systems among fishery stakeholders ● Assess gender equity and women’s involvement in fisheries ● Analyze biosocio-economic condition of fishing community | |||
Course Contents | |||
Motivation for fishing: food, income, social and religious factors, conflict and resolutions; political issues; fisher societies, community development, education, health issues, leisure, loan and banking, rural development, substitute jobs in off season; Traditional management systems, co-management; socio economic status of fishermen, scope for development. Sociology and fishermen; Co- operation and role of Co- operatives in fisheries; Priorities for fisheries: Socio-economic research, Socioeconomic indicators and indices; Different approaches used in socioeconomics studies (structured questionnaire, interviews etc.); Social awareness of fishers, social status, social indicators; Welfare of fishers; Women in fisheries, Socio economic empowerment of fisherwomen, Women’s involvement in fish processing; Biosocio-economics of fishing. | |||
Teaching and Learning Methods | |||
Lecture, Case study, group activity, field work, survey, online learning, questionnaire preparation | |||
Assessment Strategy | |||
Theory (MT): In – course assessment/s: 30% End of Course Examination 70% Practical/ Field work (MP): In – course assessment/s: 30 % End Course Examination 70% Overall mark for the course = (3MT + 2MP)/ 5 | |||
References: ● Michel, J.K. and John, D.R.,2001. Marine Fisheries Ecology. Simon Jennings, Blackwell Publ. ● Pinello, D., Gee, J. and Dimech, M., 2017. Handbook for fisheries socio-economic sample survey – principles and practice. FAO Fisheries and Aquaculture Technical Paper No. 613. Rome, FAO. ● Namsi, P. and Jiribi, J., 2013. A training manual on Socioeconomic monitoring and Analysis in the Fisheries Sector of South Sudan. African, Caribbean and Pacific Group of States. ● Burgess, F.T., 2001. A general introduction to the design of questionnaires for survey research. University of Leeds. |
List of Resource persons contributed to the preparation of these Syllabus
Course Code | Course title | Resource Persons |
FIS401M3 | Marine Ecology and Limnology | Prof. Mrs. S.Kuganathan Dr. W.H.A.P.Guruge Mr. K.Gunaalan |
FIS402M3 | Fish Physiology and Biochemistry | Prof. Mrs. S.Kuganathan Dr. W.H.A.P.Guruge Mrs. S.Sathyaruban |
FIS403M3 | Aquaculture and Hatchery Techniques | Prof. Mrs. S.Kuganathan Dr. Udeni Edirisinghe Mr. Chintaka Perera Mr. K.Gunaalan Ms. P.Shobiya |
FIS404M3 | Fish Genetics and Biotechnology | Prof. Mrs. S.Kuganathan Mr. Nuwan Liyanage Mrs. S.Sathyaruban |
FIS405M2 | Fisheries Practical III | Prof. Mrs. S.Kuganathan Mr. K.Gunaalan Mrs. S.Sathyaruban |
FIS406M2 | Fisheries Practical IV | Prof. Mrs. S.Kuganathan Mr. K.Gunaalan Ms. P.Shobiya Mrs. S.Sathyaruban |
FIS407M6 | Research Project | Prof. Mrs. S.Kuganathan Mr. K.Gunaalan Mrs. S.Sathyaruban Mr. N.Ragavan Ms. P.Shobiya |
FIS408M2 | Current Topics in Fisheries | Prof. Mrs. S.Kuganathan Mr. K.Gunaalan Mrs. S.Sathyaruban Mr. N.Ragavan Ms. P.Shobiya |
FIS409M2 | Advanced Fisheries Statistics | Prof. Mrs. S.Kuganathan Dr. W.H.A.P.Guruge Mrs. S.Sathyaruban |
FIS410M2 | Research Methods, Scientific Writing and Presentations | Prof. Mrs. S.Kuganathan Mr. K.Gunaalan Mrs. S.Sathyaruban |
FIS411M2 | Fisheries Socioeconomics | Prof. Mrs. S.Kuganathan Dr. Udeni Edirisinghe Mr. Chintaka Perera Mr. N.Ragavan |