Prof. Dilrukshi N de Silva

Prof. Dilrukshi N de Silva

Professor in Zoology

Director, Undergraduate Studies
Department of Zoology and Environment Sciences,
University of Colombo,
Colombo 03,
Sri Lanka.
Room: 106
Work Phone: +94112158390

Academic and Professional qualifications

B.Sc (Colombo)
M.Sc (Rutgers)

Teaching areas (undergraduate)

Lectures and practicals in the following courses-  Variety of Animal life,  Fish Biology and fisheries, Crustacean Biology, Inland aquatic Biology, Aquaculture, Fisheries Science, Bio molecules,  Biogeography, Life Sciences (for Physical Science students), Environment Resource Management (fisheries), Bioethics.

Research interests

  • Ecology of fish & shell fish
  • Fresh water ecology

Publications

Research communications;

  •  Coorey, D.N., K.W. Able and J.K. Shisler. 1981. Salt marsh fishes of New Jersey:     Life history of the tidewater silverside,_Menidia_beryllina. Bull. NJ Acad. Sci. 26(2):66 Paper presented at the Annual Meeting of the New Jersey  Academy of Science (March 1981)
  • de Silva, D.N.(1989)- Labeo fisheri (Teleostei:Cyprinidae) an endemic threatened species from the Upper Mahaweli River System.  Paper presented at the National Workshop on Instream Ecology and Reservoir Production of the Mahaweli Basin: A modified Ecosystem.  Organized by the Institute of Fundamental Studies, Kandy Programme and Abstracts, Pg. 9)
  • de Silva, D.N.(1992)- A survey of marine food fishes of Sri Lanka. Proceedings of the Annual Research Sessions of the Faculty of Science, University of Peradeniya (1992) Abstracts (Pg.6)
  • de Silva, D.N. and Ambagahawatte, C (1995)- A survey of parasites of ornamental fishes. Proceedings of the Annual Research Sessions of the Faculty of Science, University of Peradeniya. Abstracts (pg. 7)
  • Wijayasinghe, S.L.D.K. and de Silva, D.N. (1997)- Food, feeding ecology and morphological features associated with feeding in two co-occurring freshwater fish species, Etroplus maculatus and Puntius filamentosus Sri Lanka Association for the Advancement of Science. 53rd Annual Session- 1997, Proceedings, Part I- Abstracts. Pg. 223
  • Meegaskumbura, M.P.B. and de Silva, D.N. (1997)- Fungal inhibitory properties of bubble nest mucous as a protective mechanism of eggs and early larvae of Belontid fishes. Sri Lanka Association for the Advancement of Science. 53rd Annual Session- 1997, Proceedings, Part I- Abstracts. Pg. 223
  • Karunathilake K.M.B.C. and de Silva, D.N. (2000)- Species composition and distribution of finfish and shell fish in the Panadura Estuary/Ganga of the Bolgoda estuarine system based on the ‘Ja-kottu’ fishery. Abstracts of the annual Sessions, Faculty of Science, University of Colombo. Vol 1 (2000) pg 27.
  • Kasige, A.P. and de Silva, D.N. (2000)- A preliminary study of the species composition, length-weight relationship and food habits of half-beak fishes (Order- Beloniformes; Family-Hemirhamphidae) from the Central Market, Colombo, Sri Lanka.   Abstracts of the Annual Sessions, Faculty of Science, University of Colombo. Vol 1 (2000) pg 29.
  • De Croos, M.D.S .T., Jayasinghe, J.M.P.K. and de Silva, D.N. (2000)- Muscle lipid composition of wild and cultured Peneus monodon and possible effects of the White Spot Syndrome on muscle lipid content and fatty acid profile of cultured prawns. Abstracts of the annual Sessions, Faculty of Science, University of Colombo. Vol 1 (2000) pg. 30.
  • Fernando. K.N.A. and D.N. de Silva (2009) – A study on the extent and ecological status of the Crow Island Canal and its impact on the residents of Crow Island. Proceedings of the 29th Annual Sessions of the Institute of Biology. Abstracts. Pg. 31
  • Wewalwala P.U. ,de Silva, D.N. & Wickremasinghe D.D. (2010) – Bioinvasions in urban habitats: A case study from Kotte Kolonnawa marsh. Proceedings of the Fifteenth International Forestry and Environment Symposium, P. 47
  • Priyadharshani, S, Wickremasinghe D.D., de Silva, D. N  de Silva & Udagama-Randeniya, P.V. ( 2011)-   Phagocytosis as a biomarker of immunotoxicity in response to selected heavy metals in Euphlyctis hexadactylus:  a pilot study. Proceedings of the 31st annual sessions of the Institute of Biology, Sri Lanka, P. 34
  • Thenuwara, T.T.K., Wijesinghe, M.R., Ratnasooriya, W.D. & de Silva, D.N. (2011)- Assessing the toxicity of nitrates on the haematological parameters of the Mossambique tilapia. Proceedings of the 31st annual sessions of the Institute of Biology, Sri Lanka, P. 42
  • Thenuwara T.T.K., Wijesinghe, M.R., de Silva, D.N. and Wijesekera, R.D. (2013)
    Nitrate and phosphate toxicity on post larvae of the giant fresh water prawn ((Macrobrachium rosenbergii): individual & synergistic effects. Proceeedings of the International Forestry and Environment Symposium 2013, Department of Forestry and Environment Science, University of Sri Jayawardenapura, Sri Lanka  p. 24
  • Ranatunga  R.A.A.R.,Wijesinghe  M.R., de Silva, D.N. and Wijesekera, R.D. (2013) Effect of Arsenic and Cadmium on the post larvae of the giant fresh water prawn ((Macrobrachium rosenbergii):  a preliminary study. Proceeedings of the International Forestry and Environment Symposium 2013 ,Department of forestry and Environment Science, University of Sri Jayawardenapura, Sri Lanka   p. 15
  • Ranatunga  R.A.A.R.,Wijesinghe  M.R., de Silva, D.N. and Wijesekera, R.D. (2014) Arsenic (As) and Cadmium (Cd) induced toxicity in fry of the common carp (Cyprinus carpio). Proceedings of the 34th Annual Sessions of the Institute of Biology Sri Lanka (2014)    p. 60
  • Thenuwara T.T.K., Wijesinghe, M.R., de Silva, D.N. and Wijesekera, R.D. (2014) Histopathological changes in post larvae of  Macrobrachium rosenbergii (Giant freshwater prawn)  following nitrate and phosphate exposure. Proceedings of the 34th Annual Sessions of the Institute of Biology Sri Lanka (2014)    p. 61
  • Bandara, M.G.D.K. de Silva, D.N.  and Peiris, V.R.S.  (2016) A preliminary study to determine the water foot print during the production process (WF process) of desiccated coconut in Sri Lanka- Proceedings of the 36th Annual Sessions of the Institute of Biology Sri Lanka (2016)    p. 57
  • Bandara, R.M.W.J. and de Silva,  D.N.  (2017) Use of GPS technology to assess the ecological impacts of Blue Swimming crab (Portunus pelagicus) fishery in the Palk Bay, off Jaffna, Sri Lanka, on critical marine habitats. 23rd Annual Scientific Sessions, Sri Lanka Association for Fisheries and Aquatic Sciences (SLAFAR) (2017), p. 7

 

Research publications:

  • Talbot, C.W., Able, K.W. Shisler, J.K. and Coorey, D.N. (1980)- Seasonal variation in the composition of fresh and brackish water fishes of New Jersey mosquito control impoundments.  Proc. N.J. Mosq. Contr. Assoc. 67: 50-63
  • Coorey, D.N., Able, K.W. and Shisler, J.K. (1985)– Life History and food habits of the inland silverside, Menidia beryllina, in a New Jersey salt marsh.  Bull. N.J. Acad. Sci. 30 (1), 29-38. Selected for the award of the best paper published in the Bulletin of the New Jersey Academy of Science, for the year1985 (published monthly)
  • de Silva, D.N.- Preliminary observations on distribution, feeding and reproductive biology of Labeo fisheri (Jordan & Starks, 1917), an endemic threatened cyprinid fish from the Mahaweli River. Monograph on ‘Limnology & Fishery of the Mahaweli Basin: a modified Ecosystem. Institute of Fundamental Studies Ed: E.I.L. Silva(In press)
  • de Silva, Dilrukshi N. (1997)-Trends in seasonal availability of marine food fish at the Central Market , Kandy, Sri Lanka.  Sri Lanka Jour. Aquatic Sci., 2, 95-109.
  • Bambaradeniya, C.N.B., de Silva, D. N.,  Edirisinghe, J.P. and Wijekoon, S.(1998) Composition and community structure of the aquatic invertebrates in an irrigated rice field ecosystem. Annual Research Sessions, 1998: Award Winning Papers, University of Peradeniya, Sri Lanka, Vol 3A (29-50)
  • Bambaradeniya, C.N.B., Edirisinghe, J.P., de Silva, D.N., Gunatilleke, C.V.S., Ranawana, K.B. & Wijekoon, S. (2004) – Biodiversity associated with an irrigated rice agro-ecosystem in Sri Lanka.  Biodiversity Conservation, 13: 1715- 1753
  • De Croos, M.D.S.T., Jayasinghe, J.M.P.K., Edirisinghe, E.M.R.K.B., de Silva, D. N. (2004)– Influence of white spot disease on muscle lipid content and fatty acid profile of cultured Peneus monodon. Asian fisheries Science 17: 93-100
  • De Croos, M.D.S.T., Jayasinghe, J.M.P.K., Edirisinghe, E.M.R.K.B., de Silva, D. N. (2005)- Lipid composition and fatty acid profiles of wild caught and cultured black tiger shrimp, Peneus monodon,  in Sri Lanka.  Sri Lanka J. Aquat. Sci., 10: 35-43

 

On-going Research Projects

  • An investigation of the toxicity of nitrates, phosphates and selected heavy metals on freshwater organisms