Browsing by Author "Wijeyaratne, M.J.S."
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Item A comparative study of the food and feeding habits of Puntius Bimaculatus and P.Titteya (Pisces, Cyprinidae)(brillonline.com, 1976) de Silva, S.S.; Kortmulder, K.; Wijeyaratne, M.J.S.Item A comparison of proximate composition and water stability of three selected Shrimp feeds used in Sri Lanka(Asian Fisheries Society, Manila Philippines, 2007) Epa, U.P.K.; Wijeyaratne, M.J.S.; de Silva, S.S.Item An experimental study on the culture of Channa striata using a population of Puntius vittatus as food(Asian Fisheries Society, Manila, Philippines, 1990) Wijeyaratne, M.J.S.Item Anopheline breeding in river bed pools below major dams in Sri Lanka(Elsevier, 2006) Kusumawathie, P.H.D.; Wickremasinghe, A.R.; Karunaweera, N.D.; Wijeyaratne, M.J.S.; Yapabandara, A. M. G. M.Anopheline mosquito larval surveys were carried out from September 2000 to August 2002 in Mahaweli and Kelani river beds, below five major dams in the wet and intermediate zones of Sri Lanka, to study the prevalence of anopheline species in these areas. In each study site, all permanent and semi-permanent pools were surveyed fortnightly by dipping at 6 dips/m(2) surface area of water. Larvae were collected in separate containers, staged and identified at their third and fourth stages. During each survey, the surface area and depth of pools were recorded and each reading was considered as an individual observation. River bed pools below the dams contained stagnant clean water with a little or no aquatic vegetation. The majority of pools were < or =1m(2) in surface area and < or =75 cm in depth. Anopheline mosquito breeding was seen throughout the year in each study site. The average percentage of pools positive for anopheline larvae, the number of larvae per 100 pools and 100 dips were 14.85%, 32.34 and 9.29, respectively. Thirteen anopheline species, including 10 potential vectors, namely, An. barbirostris, An. culicifacies, An. jamesii, An. maculatus, An. nigerrimus, An. peditaeniatus, An. subpictus, An. tessellatus, An. vagus and An. varuna were found breeding in the river bed pools.Item Aphid Repellency of Croton lacciferus. L.(Sri Lanka Association for the Advancement of Science, 1986) Wimalaratne, P.D.C.; Wickramasinghe, L.K.G.; Fernando, I.V.S.; Wijeyaratne, M.J.S.Item Application of "yield per recruit" and "surplus yield" models to the grey mullet fishery in Negombo lagoon, Sri Lanka(Ministry of Fisheries, Sri Lanka, 1986) Wijeyaratne, M.J.S.; Costa, H.H.Item Application of wetland zooplankton index to assess the degree of eutrophication in Sri Lankan reservoirs(International Journal of Aquatic Biology, 2015) Wijeyaratne, M.J.S.; Sangakkara, S.M.A.I.Wetland Zooplankton Index (WZI) was developed for the low country intermediate zone of Sri Lanka using 20 reservoirs located between latitudes 7°20'22.081"N - 7°48'33.558"N and longitudes 80°1'44.55"E - 80°9'51.509"E. WZI ranged from 1.56 in Anukkane reservoir which is located in a low flat terrain in the midst of agricultural lands to 3.69 in Tampana reservoir which is located in a hilly area with a watershed mainly covered with forests. WZI showed a significant negative correlation with the Nitrate-N content (r = -0.797) and cumulative content of Nitrate-N and total phosphorus (r = -0.795) indicating that it can be used as an indicator of the degree of eutrophication of inland reservoirs in the low country intermediate zone of Sri Lanka.Item Aquaculture production potential of ophicephalus striatus bloch in a peaty swamp of Sri Lanka(The Asian Fisheries Society, Manila, Philippines, 1994) Wijeyaratne, M.J.S.Item Assemblages of macro-invertebrates in the Negombo estuarine ecosystem in relation to the locations of drainage outlets(University of Kelaniya, 2006) Dahanayaka, D.D.G.L.; Jayamanne, S.C.; Wijeyaratne, M.J.S.Item Assessing the potential of satellite and ground spectral data for Chlorophyll-a monitoring in Lake Kasumigaura, Japan(IEEE, 2014) Dahanayaka, D.D.G.L.; Tonooka, H.; Wijeyaratne, M.J.S.; Minato, A.; Ozawa, S.The suitability of a handheld spectrometer and ASTER satellite data for monitoring Chlorophyll-a (Chl-a) in Lake Kasumigaura, Japan was tested in July 2010 to December 2013. ASTER based Chl-a retrieval algorithms were developed support with in-situ Chl-a, MODIS OC3 Chl-a and Kakemaoki and Koshin automated water quality monitoring stations Chl-a. ASTER VNIR band ratio were regressively analyzed with the corrected MODIS Chl-a and automated station values obtained for each ASTER date on a day by day basis. The regression equation of the ASTER band ratio (B1/B2), with highest correlation was used to generate high-resolution Chl-a distribution maps. Significant correlation between the ratio of the reflectance peak at 705 nm and the Chl-a absorption at 678 nm and the in-situ Chl-a content was observed and these reflectance ratios were used to establish spectrometric Chl-a estimation algorithms. Proposed algorithms can be successfully adopted to determine localized environmental effects in the Lake.Item Assessment of invasion of Najas marina, Linnaeus 1753 in Madu Ganga estuary, Sri Lanka using ASTER data of Terra satellite(Institute of Biology, Sri Lanka, 2015) Silva, T.M.S.D.G.; Dahanayaka, D.D.G.L.; Wijeyaratne, M.J.S.Item Benthic biodiversity in the Dutch canal of the Muthurajawela Swamp(Sri Lanka Association for Fisheries and Aquatic Resources, 1996) Gamlath, G.A.R.K.; Wijeyaratne, M.J.S.Item Benthic Invertebrates of a Tropical Estuary in the Western Coast of Sri Lanka(2008) Dahanayaka, D.D.G.L.; Jayamanne, S.C.; Wijeyaratne, M.J.S.Item The biology and fishery of Grey Mullets (Mugilidae Pisces) in Negombo lagoon, Sri Lanka(1984) Wijeyaratne, M.J.S.Item Biology of harvesting fishery resources in Sri Lanka at the maximum sustainable level(The University of Michigan, USA, 1993) Wijeyaratne, M.J.S.Item Borderless education: Challenges and opportunities for Sri Lankan universities(University of Kelaniya, Sri Lanka, 2009) Wijeyaratne, M.J.S.Item Branding, Advertising and Sustainable Development(2017) Wijeyaratne, M.J.S.Item Branding, advertising and sustainable development(The International Institute of Knowledge Management (TIIKM) Colombo, Sri Lanka, 2015) Wijeyaratne, M.J.S.Branding and advertising can be effectively used to ensure the sustainability of economic and social development. Sustainable development has been paid much attention today and in the United Nations “Transforming our world: the 2030 Agenda for Sustainable Development”, 17 sustainable development goals (SDGs) have been identified. To achieve some of these goals, branding and advertising of the relevant goods, products, equipment and services are very important. For example, to end hunger, achieve food security, improved nutrition and promote sustainable agriculture, which is one of the SDGs of the UN 2030 Agenda for Sustainable Development, branding and advertising of high quality equipment, raw material and seeds required in agriculture as well as nutritive foods are necessary. In addition, branding and advertising of high quality medicine and health service providers are necessary to achieve the SDG of ensuring healthy lives and promoting well-being of all ages. To ensure inclusive and equitable quality education and to promote lifelong learning opportunities for all, which is another SDG of the UN 2030 Agenda for Sustainable Development, advertising of such service providers is necessary. Branding and advertising of products that help in conserving water and energy as well as utilizing sustainable energy will contribute towards achieving the SDGs of ensuring availability and sustainable management of water and sanitation for all and ensuring access to affordable, reliable, sustainable and modern energy for all. Branding and advertising will also contribute to achieve the SDG of building resilient infrastructure, promoting inclusive and sustainable industrialization and fostering innovation, through the promotion of relevant products as well as that are produced through new innovations. Branding and advertising are very important for combating climate change and its impacts, which is another SDG, through promoting the products with low carbon footprint. In addition, for achieving the SDG of conserving and sustainable use of oceans, seas and marine resources, branding and advertising the appropriate fishing gear and other equipment are necessary. Hence branding and advertising play a significant role in achieving sustainable economic and social development while conserving the environment. In these endeavors, it is extremely necessary that highest ethical guidelines are adhered to so that the absolute truth is provided to the society.Item Buddhist Education in Sri Lanka at the University Level(World and International Conference on Buddhist Ethics. Ayuththya, 2008) Wijeyaratne, M.J.S.Item Cage culture of the snakehead Ophicephalus striatus in a peaty swamp in Sri Lanka In. Zhou, et al. (eds).(Asian Fisheries Society, Manila, Philippines, 1997) Wijeyaratne, M.J.S.