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Mr. H. K. S. de Zoysa

BSc, MSc, MPhil, PhD (Reading)
Teaching programs and modules

Mr H. K. S. de Zoysa is a Docent at Department of Bioprocess Technology, Faculty of Technology (FoT), Rajarata University of Sri Lanka (RUSL). He graduated from the RUSL in 2014 with a special degree in Applied Biology securing second class upper division pass and gold medal given for meritorious student in the BSc program. Also, he completed his first master’s degrees in Biochemistry with support of the Postgraduate Research Scholarship from the National Science Foundation, Sri Lanka in 2019 at the RUSL. After that, in 2020, he completed his second master’s degree in the field of Marine Biology with the support of COINOR-University of Naples Federico II (UNINA Federico II) Scholarship, Italy. Currently he is reading his PhD at the UNINA Federico II, Italy.  

In 2016, he joined to the FoT, RUSL as a founder staff member and actively engaged with both academic and administrative works until he went abroad to his second master’s degree. Since 2018 de Zoysa as a master’s student of the UNINA Federico II (Università degli Studi di Napoli Federico II – 1224) in Italy, he got the opportunity to conduct his research activities in the field of Marine Biotechnology at the Stazione Zoologica Anton Dohrn (Anton Dohrn Zoological Station (SZN), Naples – 1872), which among the renowned research institutes and a world centre for the study of Marine Biology in Europe. In 2020, He has started PhD at Department of Biology, UNINA Federico II. He will be conducting his Doctoral studies in the field of Molecular Biology about In-situ Hybridization and RNA editing of the Octopus at Professor Anna di Cosmo’s Lab under her principle supervision.

Since the undergraduate time, de Zoysa actively engaged with many research activities up to date and has published numerous research articles and chapters. In addition, he has vast knowledge in multidisciplinary research background as his research expertise in the areas of Biology, Marine Biotechnology, Molecular Biology, Natural Products, Food Safety, Post-harvest Techniques, Food analysis, and Conservation Biology.

Selected publications

Indexed Articles
(Web of Science; SCI, SCIE, ESCI, Zoological Record, Scopus, PubMed, MEDLINE )

  1. Yapa, P.N., Lakmali, J.P.D., De Zoysa, H.K.S., Silva, S., Manawadu, C., Herath, B.M.M.D., Madhushan, K.W.A., Perera, E.G., Ratnayakae, O.C., Kapilan, R. and Rathnayake, A.I., (2022) Biofertilizers: An Emerging Trend in Agricultural Sustainability. Chiang Mai Journal of Science, 49 (3): 1-33pp.
  2. Jayaratne, W.M.S.C., Abeyratne, A.H.M.A.K., De Zoysa, H.K.S., Dissanayake, D.M.R.B.N., Bamunuarachchige, T.C., Waisundara, V.Y., Chang, S. (2020). Detection and quantification of Aflatoxin B1 in corn and corn-grown soils in the district of Anuradhapura, Sri Lanka. Heliyon, 6 (10): 1-6pp, e05319.
  3. Ukuwela, K.D.B., Bandara, I.N., De Zoysa, H.K.S., Rupasinghe, U.A.L.D., Vandercone, R.P.G. (2020). New Localities, Distribution and Habitat Modeling of the Critically Endangered Sri Lankan Frog Nannophrys marmorata. Russian Journal of Herpetology, 27(1): 33-40pp.
  4. De Zoysa, H.K.S., Amarasinghe U.S., Edirisinghe, E.M.R.K.B. & T.V. Sundarabarathy. (2019). Habitat related variations and comparison of fatty acid composition of muscle and stomach contents of secondarily colonized Malabar Sprat (Ehirava fluviatilis) in Sri Lanka. NeBIO, An international journal of environment and biodiversity. 10(3): 152-163pp.
  5. De Zoysa, H.K.S., Jinadasa B.K.K.K., Edirisinghe, E.M.R.K.B & Jayasinghe, G.D.T.M. (2018). The association of test diameter and gonad weight with some toxic trace metals level in black sea urchin (Stomopneustes variolaris), Agriculture & Food Security, 7(58): 1-12pp.
  6. Banjari, I., Misir, A., Šavikin, K., Jokić, S., Molnar, M., De Zoysa, H.K.S., Waisundara, V.Y. (2017). Anti-Diabetic Effects of Aronia melanocarpa and its Other Therapeutic Properties, Frontiers in Nutrition, 4: 1-6pp.
  7. De Silva, A.,  Sandaruwan, W. M. J., De Zoysa, H. K. S., Ukuwela, Kanishka D. B. (2017). An authentic record of Eutropis bibronii (Gray, 1838) (Reptilia: Scincidae) from Sri Lanka, Zootaxa. 4329, (2): 175–182pp.
  8. De Zoysa, H. K. S., Samarasinghe, D. P., Dissanayake, D.S.B., Wellappuliarachi, S.M. & Wickramasinghe, S. (2017). Range extension of Oziothelphusa mineriyaensis Bott, 1970 (Decapoda, Gecarcinucidae) in North Central Province, Sri Lanka, Check List 13(5):1-4 pp.​
  9. De Zoysa, H. K. S., Ukuwela, Kanishka D. B., Wickramasinghe, S., NGUYEN, A. D., Hollier, J. (2017). Reinstatement of Spirostreptus kandyanus Humbert, 1865 and deletion of Thyropygus allevatus (Karsch, 1881) and Sphaeropoeus hercules (Brandt, 1833) in the checklist of Sri Lankan Diplopoda, Zootaxa. 4247(3):333–335pp.
  10. De Zoysa, H. K. S. & Sundarabarathy, T. V. (2017). Diversity, abundance and threats of vertebrate fauna in selected areas of Kammalakkulama tank at Mihintale, Sri Lanka, NeBIO, An international journal of environment and biodiversity. 8(1):6-15pp.
  11. Jinadasa B.K.K.K., De Zoysa, H.K.S., Jayasinghe, G.D.T.M. & Edirisinghe, E.M.R.K.B. (2016). Determination of the biometrical parameters, biochemical composition and essential trace metals of edible sea urchin (Stomopneustes variolaris) in Sri Lanka, Cogent Food & Agriculture. 2 (1):1-12pp.
  12. De Zoysa, H. K. S., NGUYEN, A. D., Wickramasinghe, S. (2016). Annotated checklist of millipedes (Myriapoda: Diplopoda) of Sri Lanka, Zootaxa. 4061 (5): 451–482pp.

Peer Reviewed Articles

  1. De Zoysa, H. K. S., Herath, P. N., Cooper, R, Waisundara, V. Y. (2017). Paspanguwa Herbal Formula, a Traditional Medicine of Sri Lanka: A Critical Review, Journal of Complementary Medicine and Alternative Healthcare (JCMAH). 3(2: 555609): 1-8pp. DOI: 10.19080/JCMAH.2017.03.555609.

Short Communications

  1. De Zoysa, H.K.S., Jinadasa B.K.K.K., Edirisinghe, E.M.R.K.B. & Jayasinghe, G.D.T.M. (2017). Length-weight relationship of black sea urchin (Stomopneustes variolaris) in Sri Lanka, International Journal of Aquatic Biology (IJAB). 5 (6): 408-412pp.
  2. De Zoysa, H. K. S., Samarasinghe, D. P. & Wickramasinghe, S. (2015). Dendrelaphis schokari (Schokar’s bronzeback). Predation, Natural History Notes; Herpetological Review. 46 (4): 642-643pp.

Abstracts / Extended Abstracts (National & International)

  1. Maselli, V., De Zoysa, H. K. S., Pinto, B., Polese, G., Kuba, M. J., Gutnick, T., Norcia, M., Di Cosmo, A. (2022). Sensory System, Behaviour and Differential Gene Expression: New Insights From Common Octopus (Octopus vulgaris). 81° Congresso, Unione Zoologica Italiana (UZI)- 2022. 20-23 September, 2022, Trieste, Italy, 29pp.
  2. De Zoysa, H. K. S., Al-Soudy, Al-Sayed, Polese, G., Maselli, V., Di Cosmo, A. (2022). Octopus sucker as the extra-ocular visual system. CIAC- 2022. 2-8 April, 2022, Sesimbra, Portugal.
  3. Polese, G., Al-Soudy, Al-Sayed, Maselli, V., Russo T., De Zoysa, H. K. S., Di Cosmo, A. (2021). Octopus’ Suckers a Multitasking Sensor. International Bioscience Conference. 25 – 26 November, Serbia.
  4. De Zoysa, H. K. S., Edirisinghe, E.M.R.K.B., Sundarabarathy, T.V. (2017). Fatty acid profiles of Malabar sprat (Ehirava fluviatilis) from brackish water and freshwater habitats in Sri Lanka, NARA Scientific Sessions – 2017, 57 pp.
  5. De Zoysa, H. K. S. & Sundarabarathy, T. V. (2015). Avifaunal Diversity and Abundance at Kammalakkulama Tank in Mihintale, Sri Lanka. In Proceedings of 20th International Forestry and Environment Symposium. 20,22pp.
  6. Karunasena, R.P.U., De Zoysa, H.K.S., Jayawardana, N.W.I.A., Prasanna, P.H.P. (2015). Development of Fish Sauce Using Mal Koraliya. Proceedings of the 7th Annual Research Symposium, Faculty of Agriculture, Rajarata University of Sri Lanka, Puliyankulama, Anuradhapura, 50pp.
  7. De Zoysa, H.K.S., Jinadasa B.K.K.K., Jayasinghe, G.D.T.M. & Edirisinghe, E.M.R.K.B. (2015). Proximate Analysis and Fatty acids Profile of Edible Sea Urchin (Stomopneustes variolaris) in Sri Lanka, Extended abstract, NARA Scientific Sessions – 2015, 101-104 pp.
  8. De Zoysa, H.K.S., Jinadasa B.K.K.K. & Edirisinghe, E.M.R.K.B. (2015). Fatty acids and Trace metals composition of Stomopneustes variolaris (Class: Echinoidea) in Sri Lanka. Proceedings of the International Journal of Food Science and Technology Conference (IJFST) 50th Celebration Conference. Lincoln, New Zealand.
  9. De Zoysa, H. K. S. & Sundarabarathy, T. V. (2014). Freshwater Fish Diversity, Abundance, Conservation and Effect of Aquatic Birds on Fish Population in Kammalakkulama Tank at Mihintale, Sri Lanka. Extended Abstract, Annual International Research Symposium Rajarata University of Sri Lanka (IRSYRU – 2014), 465-468 pp.
  10. De Zoysa, H. K. S., Sandunika, I. A. I., Rathnayake, D. G. R. M. M. K., & Wickramasinghe, S. (2014). Diversity, Abundance and Habitat Utilisation of Birds in Periphery of the Mihintale Sanctuary. In Proceedings of 18th International Forestry and Environment Symposium. 18, 20pp.
  11. Sandunika, I. A. I., Rathnayake, D. G. R. M. M. K., De Zoysa, H. K. S., & Wickramasinghe, S. (2013). Habitat Utilization of Birds in Grassland Hbitat Adjescent To Mihinthale Sanctuary. Extended Abstract, 3rd Annual Research Symposium, Rajarata University of Sri Lanka. 1, 73-74 pp.
  12. Rathnayake, D. G. R. M. M. K., Sandunika, I. A. I., De Zoysa, H. K. S., & Wickramasinghe, S. (2011). Avifaunal Diversity in Faculty of Applied Sciences Premises Rajarata University of Sri Lanka. Extended Abstract, 2nd Annual Research Symposium, Rajarata University of Sri Lanka. 1, 85-88pp.


  1. De Zoysa, H. K. S., Maselli, V., Pinto, B., Polese, G., Kuba, M. J., Gutnick, T., Di Cosmo, A. (2022). Smell by Touch in Common Octopus (Octopus vulgaris). 81° Congresso, Unione Zoologica Italiana (UZI)- 2022. 20-23 September, 2022, Trieste, Italy, 101pp.
  2. Pinto, B., Maselli, V., Consoli, P., Riveccio, E., Minichino, R., De Zoysa, H. K. S., Polese, G., Di Cosmo, A. (2022). Piano Di Gestione Della Pesca Del Polpo (Octopus vulgaris) Nelle Aree Marine Protette Della Regione Campania. 81° Congresso, Unione Zoologica Italiana (UZI)- 2022. 20-23 September, 2022, Trieste, Italy, 80pp.

Technical Report/Magazine articles:

  1. Bamunuarachchige, T.C., De Zoysa, H.K.S., Yapa, P.N. (2021) 7. Use of microbes in next generation biofertilizers, ‘VIDURAVA’ Science Magazine, Volume 38, July – September 2021. National Science Foundation. ISSN 1391-0299. DOI: 10.13140/RG.2.2.30993.71527

Book chapters

  1. Abeysinghea, G., De Zoysa, H.K.S., Bamunuarachchige, T.C., and Zakeel, M.C.M. (2022) Cold-tolerant and cold-loving microorganisms and their applications. In Soni, R., Suyal, D., Yadav, A., and Goel, R. (Eds.), Trends of Applied Microbiology for Sustainable Economy (pp. 185-205). Academic Press. ISBN 9780323915953.
  2. De Zoysa, H. K. S., & Waisundara, V. Y. (2022). Benefits and risks of organic food. In Martinović, Aleksandra, Oh, Sangsuk and Lelieveld, Huub (Eds), Ensuring Global Food Safety (pp. 197-212). Academic Press.
  3. Weerasekera, A. C., Samarasinghe, K., De Zoysa, H.K.S., Bamunuarachchige, T. C., & Waisundara, V. Y. (2021). Cinnamomum zeylanicum: Morphology, Antioxidant Properties and Bioactive Compounds. In Waisundara, V. Y. (Ed), Antioxidants. DOI: 10.5772/intechopen.97492.
  4. De Zoysa, H.K.S and Waisundara, V.Y. (2020). Mustard (Brassica nigra) Seed. In Tanwar, B., Goyal, A. (Eds.), Oilseeds: Health Attributes and Food Applications: Springer Singapore. 191 – 210 pp. (ISBN:978-981-15-4194-0, 978-981-15-4193-3),
  5. De Zoysa, H.K.S and Waisundara, V.Y. (2019). The Importance of Food Reformulation in Developing Countries. In Raikos, V. and Ranawana, V. (Eds.), Reformulation as a Strategy for Developing Healthier Food Products: Food Reformulation: Springer, Cham. 127-149 pp. (ISBN: 303023620X, 9783030236205),
  6. Jayawardana, N. W. I. A., Prasanna, P. H. P., Ranadheer, C. S., De Zoysa, H. K. S., & Vidanarachchi, J. K. (2016). Probiotics in Fermented Foods. In A. E. Morton (Ed.), Fermented Foods: Sources, Consumption and Health Benefits: Nova Science Publishers. 103-126 pp. (ISBN: 978-1-63483-868-9).


  1. Bamunuarachchige, T. C. and de Zoysa, H. K. S. (2022). Waste Technology for Emerging Economies. CRC Press, 296pp. ISBN: 9780367655112.
Professional Qualification/Experiences & Training
  • Training Course on Sciences and Technologies Applied to Animals Used for the Scientific Purposes for Personnel with Functions A-B-C-D, Accreditation by the Ministry of Health, Italy – General Directorate of Animal Health and Veterinary Medicines – 20/05/2022 – July 2022.
  • Friday Harbor Laboratories, San Juan Island, University of Washington, USA – Full-time research apprenticeship on Marine Biodiversity Through the Lens of Single-Cell Genomics – March -June 2022
  • Training Course on Safety at Workplace for Workers (high risk), University of Naples Federico II, Naples, Italy – 16hrs, June 2021
  • Anton Dohrn Zoological Station (Stazione Zoologica Anton Dohrn), Naples, Italy – Master’s research student – March 2019 – April 2020
  • Certificate Course in Teaching in Higher Education, RUSL – 2017
  • National Aquatic Resources Research and Development Agency (NARA), Sri Lanka – Undergraduate research student – May 2014 – November 2014
  • PADI (Professional Association of Diving Instructors) Advanced Open Water Diver – 2009
Awards and external recognitions


  • Vice Chancellor’s Award for Most Outstanding Young Researcher – Faculty of Technology, 2021.
  • Vice Chancellor’s Award for Researchers (2nd) who has published the highest number of indexed journal articles – Faculty of Technology, 2021.
  • Dr. Shirani Nathaneal Memorial Gold Medal – 15th General Convocation at RUSL, 2015.


  • Scholarship for Friday Harbour Laboratories (FHL) Spring Quarter Apprenticeship ($2000), Friday Harbor Laboratories, University of Washington, USA – March -June 2022.
  • Master’s scholarship for foreign students – COINOR – UNINA Federico II Scholarships, Italy, 2018.​
  • National Science Foundation of Sri Lanka Research Scholarships 2015 (NSF/SCH/2015/03), Sri Lanka, 2015.


  • IDEA WILD Equipment Grant – September, 2016.
Current and Previous Funded Projects

Effect of Feeding Habits and Habitats on Fatty Acids Profile of Ehirava fluviatilis (Malabar Sprat)in Sri Lanka – National Science Foundation of Sri Lanka Research Scholarships 2015 (NSF/SCH/2015/03), Sri Lanka, 2015.

Administrative & Other Activities within the University
  • Senate member – October 2017 – July 2018.
  • Lecturer In-charge – Department of Food Technology, FoT, RUSL- October 2017 – July 2018.
  • Student counsellor – FoT, RUSL – December 2017 to October 2018.
  • Academic sub warden – RUSL – December 2014 – December 2015.
Working Experience and Employment History
  • Lecturer – FoT, RUSL – November 2016 – to date
  • Research Assistant – Department of Food Technology, FoT, RUSL- December 2015 – November 2016.
  • Temporary Demonstrator – Department of Biological Sciences, Faculty of Applied Sciences, RUSL – December 2014 to December 2015.