Ceylon Journal of Science (Biological Sciences)
Permanent URI for this collectionhttps://dl.nsf.gov.lk/handle/1/7565
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Item A Preliminary Survey of Bryophytes in the Central Province of Sri Lanka(University of Peradeniya:Peradeniya, 2013) Ruklani, N.C.S.; Rubasinghe, S.C.K.Item A Refugium for Cordia subcordata (Boraginaceae), a Very Rare and Endangered Plant in Sri Lanka and Strategies for its Conservation(University of Peradeniya:Peradeniya, 2015) Jayasuriya, A.H.M.; Gunatilleke, I.A.U.N.Item Absence of synchronization either in defaecation or urination of the Sri Lankan elephants(Elephas maximus maximus) in captivity(1994) Ratnasooriya, W.D.; Molligoda, P.S.; Molligoda, W.H.M.The main aim of this study was to examine whether synchronization in defaecation is present in the Sri Lankan elephant as is reported for the African elephants. The other secondary aims were to investigate whether such a phenomenon exists with respect to urination and to obtain baseline data related to these two phenomena. The study was conducted at the National Zoological Gardens of Sri Lanka using eight captive elephants. The results show that there is no synchronization either in defaecation or in urination. Furthermore, the study shows that the Sri Lankan elephant, in captivity, defaecates approximately 13 times per day, each episode lasting for about 33 sec. About 5 faecal boluses are passed at each defaecation episode and each single bolus weighted approximately 1.5kg. Amoung the parameters monitored and computed, a gender defference was seen only in the weight of the boluses, where the weight was significantly lower in the females in comparison to the males. On the other hand, the elephants urinated approximately 10 times per day, each episode having a mean duration of about 22 sec.Item Abundance, richness and root colonization of arbuscular mycorrhizal fungi in natural and semi-natural landuse types at upper hantana(University of Peradeniya:Peradeniya, 2015) Mafaziya, F.; Madawala, S.Item Allelic variation in the MHC class II gene in Atlantic salmon (Salmo salar) and brook trout (Salvelinus fontinalis)(University of Peradeniya. Peradeniya, 2005) Rajakaruna, R.S.; Brown, J.A.; Kaukinen, K.; Miller, K.M.Item An Automated System for Analyzing Agarose and Polyacrylamide Gel Images(University of Peradeniya:Peradeniya, 2015) Abeykoon, A.M.K.W.K.; Dhanapala, M.P.C.S.; Yapa, R.D.; Sooriyapathirana, S.D.S.S.Item Analysis of morphological variation of four populations of Macrobrachium rosenbergii (De Man, 1879) (Crustacea : Decapoda) in Sri Lanka(2010) Munasinghe, D.H.N.; Thushari, G.G.N.Item Analysis of prenyllipid in the chloroplasts of liverwort Heterscyphus planus(2010) Karunagoda, R.P.Item Annelida polychaeta from the Philippines and Indonesia(University of Peradeniya. Peradeniya, 1965) Pillai, T.G.Item Annelida polychaeta of Tambalagam lake, Ceylon(University of Peradeniya. Peradeniya, 1961) Pillai, P.G.Item An annotated list of aphids of Peradeniya Campus, Sri Lanka(1994) Edirisinghe, J.P.A list is given of 17 species of aphids with their host plants (52 plant species in 29 familes) from Peradeniya campus, located in the Central Province of Sri Lanka. Nine of the aphid species had not been previously recorded from Sri Lanka. Of them, Sitobion wikstroemiae (Mamet) has been recorded only from Mauritius and East Africa and Uroleucon minutus van der Goot is considered a rare species. Two of the aphid hyperparasitoids collected. Syrphophagus hofferi (Hayat) and Coagerus boucaki Noyes and Hayat are without previous host recordsItem Antireproductive effects in male rats exposed to methamidophos(University of Peradeniya. Peradeniya, 1995) Peiris, L.D.C.; Jayatunga, Y.N.A.; Ratnasooriya, W.D.Item The apical organization and development of the vegetative and reproductive apices of Oryza sativa L.(University of Peradeniya. Peradeniya, 1957) Satchithanandam, P.Item Application of geospatial tools to monitor change in a Micro - tidal estuary for the purpose of Management planning(2008) Nagabhatla, N.; Finlayson, C.M.; Sellamuttu, S.S.; Gunawardena, A.Item Aquatic insects taken at light in Ceylon, with a discussion and bibiliography of references to aquatic insects at light(University of Peradeniya. Peradeniya, 1961) Fernando, C.H.Item Aspects of the food and feeding biology of the yellow mahseer Tor khudree (Sykes) (Osteichthyes, Cyprinidae) in Sri Lanka(University of Peradeniya. Peradeniya, 1995) De Silva, P.K.; Amerasinghe, D.Item Aspects of the reproductive biology and ecology of the yellow Mahseer Tor khudree (sykes)1 (Osteichthyes,Cyprinidae) of Sri Lanka(University of Peradeniya. Peradeniya, 1995) De Silva, P.K.Item Assessment of genetic diversity in Aloe germplasm accessions from India using RAPD and morphological markers(2010) Nayanakantha, N.M.C.; Singh, B.R.; Gupta, A.K.Item An assessment of the human-elephant conflict in Sri Lanka(2010) Santiapillai, C.; Wijeyamohan, S.; Bandara, G.; Athurupana, R.; Dissanayake, N.; Read, B.