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Results 51-60 of 60 (Search time: 0.003 seconds).
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Issue DateTitleAuthor(s)
1995The Effects of leaving central bare areas in traditional circular brush-parks on the yield of fish in the brush-park fishery in Negombo estuary, Sri Lanka.Costa, H.H.; Wijeyaratne, M.J.S.
1992Resource partitioning of two commercially important cichlid species in there minor perennial reservoirs in the north-western province of Sri LankaWijeyaratne, M.J.S.; Costa, H.H.
1999Effect of crowding, food quality and body size on food utilization of the exotic snail, Pomacea canaliculata (Lamarck), a potential pest of rice in Sri LankaKumara, P.A.D.A.; Chandrasekera, L.W.H.U.; Costa, H.H.
1999Species composition and abundance of aquatic oligochaetes in Ihalagama reservoir, a shallow perennial minor reservoir in Sri LankaWeerasundara, G.A.; Pathiratne, A.; Costa, H.H.
1990The susceptibility and resistance of fry and fingerlings of Oreochromis mossambicus Peters to some pesticides commonly used in Sri LankaShafiei, T.M.; Costa, H.H.
1990FOOD AND FEEDING OF TWO SPECIES OF GREY MULLETS VALAMUGIL BUCHANANI (BLEEKER)AND LIZA VAIGIENSIS QUOY AND GAIMARD INHABITING BRACKISHWATER ENVIRONMENTS IN SRI LANKAWijeyaratne, M.J.S.; Costa, H.H.
1988The food, fecundity and gonadal maturity of Valamugil Cunnnesius (Pisces; Mugilidae) in the Negombo lagoon, Sri LankaWijeyaratne, M.J.S.; Costa, H.H.
1987Foraging behaviour and echolocation in the rufous horseshoe bat (Rhinolophus rouxi) of Sri LankaNeuweiler, G.; Metzner, W.; Heilmann, U.; Rübsamen, R.; Eckrich, M.; Costa, H.H.
1970Effects of some common insecticides and other environmental factors on the heart beat of Caridina pristisCosta, H.H.
1986Food, feeding and fecundity of the giant freshwater prawn Macrobrachium rosenbergii from natural habitats in Sri LankaCosta, H.H.; Wanninayaka, T.B.

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