Zoology
Permanent URI for this collectionhttp://repository.kln.ac.lk/handle/123456789/3752
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Item Studies on the biology of young grey mullet, Mugil cephalus L.(FAO of United Nations, Rome, Italy, 1976) de Silva, S.S.; Wijeyaratne, M.J.S.Item The ecology of a montane grassland in Sri Lanka. VII. Biomass production(Ceylon Journal of Science, Biological Sciences, 1983) Amarasinghe, L.D.; Pemadasa, M.A.Biomass accumulation was studied monthly on 2 montane grasslands in Sri Lanka at 900 m and 560 m alt. from June 1976 to May 1977. The upper site was a dense sward dominated by Cymbopogon nardus (65.4%), Themeda tremula (25.4%) andEulalia trispicata (10.1% of standing crop) and the lower site was a sparse sward dominated by C. nardus (68.6%) and Panicum maximum (13.9%) with somePennisetum polystachyon (7.7%). Total standing crop biomass was higher at the upper site than at the lower site and increased 4-fold at both sites over the years. Productivity estimates were 911.2 g/m² for the upper sites and 679.5 g for the lower site. There was no significant difference in the amount of C. nardus between sites, but the upper site supported a much denser sward of T. tremula accounting for the higher productivity of this site.Item Estimation of maximum sustainable fish yield and stocking densities of fish fingerlings in fresh water lakes and reservoirs(University of Malaya, Kuala Lumpur, 1982) Wijeyaratne, M.J.S.; Amarasinghe, U.S.Item Water quality criteria for pollution control(University of Malaya, Kuala Lumpur, 1982) Costa, H.H.Item Some Chemical Characteristics of Fresh and Salt-Dried Tilapia mossambica Peters(National Science Council of Sri Lanka, 1979) de Silva, S.S.; Rangoda, M.Item The distribution of Anostraca and Conchostraca (Crustacea) in the Jaffna Peninsula(The Fisheries Research Station, 1979) Selvarajah, N.; Costa, H.H.Item Studies on the fish ponds at Pitipana, Negombo 1. Seasonal and diurnal variation of some hydrobiological factors(The Fisheries Research Station, 1979) de Silva, S.S.; Silva, E.I.L.Item Fish Fauna of a coastal lagoon in Sri Lanka: Distribution and seasonal variation(The Fisheries Research Station, 1979) de Silva, S.S.; Silva, E.I.L.Item Growth, mortality and seasonal abundance of grey mullets in Negombo estuary(Asian Fisheries Forum, Manila, Philippines, 1986) Wijeyaratne, M.J.S.; Costa, H.H.Item The susceptibility and resistance of fry and fingerlings of Oreochromis mossambicus Peters to some pesticides commonly used in Sri Lanka(Asian Fisheries Forum, Manila, Philippines, 1986) Shafiei, T.M.; Costa, H.H.