• The Role of Tilapia Species (Family Cichlidae) in the Fishery of Three Upland, Deep Reservoirs of Sri Lanka 

  De Silva, K.H.G.M.; De Silva, P.K. (1991)

  The fish catches of three upland reservoirs, namely, Kotmale, Victoria and Randenigala reservoirs, were studied for periods of 8, 18 and 9 months, respectively. Tilapia species formed 60-70 % of the catch of all three ...
• The Declining Pole and Line Fishery in Sri Lanka 

  Amarasiri, C. (1991)

  Pole and line fishing, which is specifically aimed at skipjack tuna has been practised in Sri Lanka for about 70 years. Originally, this method was popular amongst fishermen in the southern coast, and was later expanded ...
• The Burying Ability of O Group Dover Sole 

  Jinadasa, J.; Baynes, S.M.; Howell, B.R. (1991)

  The particle size of a substrate determines the ability of 0 group Dover sole Solea solea (L.) to bury for concealment. The larger thefish, however, the larger the particle size in which they are able to bury. When ...
• Preliminary Observations on the Anopheline Mosquitoes of Gomadiyagala A Village in the North Western Province of Sri Lanka 

  Wickramasinghe, M.B.; De Silva, B.G.D.N.K.; Perera, O.P.; Ratnayake, W.E. (1991)

  Investigations on anopheline mosquitoes were carried out in Gomadiyagala during January-December 1989, primarily to gather base-line data in relation toa collaborative study between the Entomology Division, Anti-Malaria ...
• Limnology Project at Mahaweli Reservoirs:I. Some Physical Properties of Kotmale, Victoria and Randenigala Reservoirs 

  Piyasiri, Swarna (1991)

  The Physical properties of Kotmale, Victoria and Randenigala reservoirs were studied since 1987 upto now and this paper presents the data obtained during 1987. The transparency values changed with the reservoir and the ...
• Interrelationships among the Species of the Genus Puntius (Teleostei, Cyprinidae) as Indicated by the Caudal Skeletons 

  Jinadasa, J.; Kotalawala, A.B. (1991)

  The studies on the osteology of caudal skeleton and the ray counts showed that the species of Puntius studied fall into two groups. one containing 11 species and the other with one species. The major group with I I species ...
• Incidence of Some Pathogenic Organisms in Cultured Shrimp (Penaeus monodon) Collected from Chilaw 

  Fonseka, T.D.G.; Hettiarachchi, K. (1991)

  Samples offarm shrimp and pond water were collectedfrom Chi/aw. Total bacterial counts of coliforms and Escherichia coli are reportedfor these samples. Pathogens Vibrio parahaemolyticus, and Salmonella along with ...
• Contents 

  Unknown author (2013-02-26)
• An Analysis of Acid Vase, Ionic and Water Balance in Rainbow Trout (Salmo gairdneri) Exercised at Cruising Speeds 

  Attygalle, M.V.E. (1991)

  Rainbow trout (Salmo gairdneri) were exercised at cruising speeds for 5 hours. A slight but significant increase in dorsal aortic blood pH after I hour of exercise was accompanied by significant decreases in PeDl and ...
• A Review of Marine Fin Fish Fisheries Research in Sri Lanka from 1902 to 1900 

  Jinadasa, J. (1991)

  Fisheries Research in Sri Lanka started to gain momentum in the 195O's from a low ebb prior to independence. It was because colonial rulers before 1948 paid very little attention to develop fisheries. They were exploring ...
• A Preliminary Survey of Domiciliary Cockroaches and Their Oothecal Parasites in Sri Lanka 

  Kumarasinghe, N.C.; Edirisinghe, Jayanthi P. (1991)

  A survey of domiciliary cockroaches and their oothecal parasites was carried out in 17 districts. The study was based on empty and live cockroach oothecae collected from dwelling houses. Five species of cockroaches; ...

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