Ceylon Journal of Science (Biological Sciences)
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Item An ecological study of the mangrove fauna in the west coast of Sri Lanka(Univer, 1986-87) De Silva, K.H.G.M.; De Silva, P.K.Item Importance of ectoparasitic ciliate infestations in the farming of snakehead fishes (Channa spp.) (Teleostei:Channidae) in Sri Lanka(Univer, 1986-87) De Silva, K.H.G.M.Item Studies on Atyidae (Crustacae:Decapoda:Caridae) of Sri Lanka. V. pH tolerance of three species of Caridina(University of Peradeniya. Peradeniya, 1986-87) De Silva, K.H.G.M.The pH tolerance of Caridina fernandoi, C. pristis and C. simoni was investigated by labaoratory experimentation. No significant difference between males and females in theirItem A survey of post-harvest losses in some fruits and vegetables and the fungi associated with them(University of Peradeniya. Peradeniya, 1986-87) Adikaram, N.K.B.A survey was conducted of the post-harvet losses in some fruits and vegetables in the Central Province of Sri Lanka where 35 fruit and vegetable stalls were visited and imformation on storage practices and losses in various commodities gathered. The figures showed that losses in the range of 5-25perc. are commonplace in most commodities. Shelf life in many of these did not exceed 6-7 days. Thirty seven species of fungi belonging to 13 genera were isolated from the diseased fruit and vegetable samples collected in this survey. According to the nature of the infection and subsequent rotting these fungi could be divided in to two major categories:(1) those fungi that invade overripe fruit through mechanical wounds and cause latent infections in the immature fruits and develop rotting only when the fruit is ripened.Item Effect of polyphloretin phosphate (a prostaglandin receptor-blocking drug) on fertility of male rats(1983) Ratnasooriya, W.D.; Lionel, N.D.W.No significant suppression in fertility and libido was evident by implanting Silastic rods containing 25perc. and 50 perc. polyphloretin phosphate, a prostonoid receptor-blocking drug, adjacent to the epididymis of rats. The treatment neither produced any significant deterioration of health nor development of undesirable side effects. Possible reasons for the failure of polyphloretin phosphate to effect fertility are discussed.Item Composition, biomass and primary production of some grasslands in the Ruhuna National Park, Sri Lanka(1983) Chamber, M.R.; Balasubramaniam, S.; Santiapillai, C.; Ishwaran, N.Item The structure and identification of the hairs of the mammals of Sri Lanka(1983) Amarasinghe, F.P.Item Euphorbiaceae of Ceylon. nomenclatural notes(1983) Wheeler, L.C.Item Citation of the nineteenth century specimens in the herbarium at Peradeniya(1983) Wheeler, L.C.