Browsing by Author Costa, H.H.

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Issue DateTitleAuthor(s)
1986Application of "yield per recruit" and "surplus yield" models to the grey mullet fishery in Negombo lagoon, Sri LankaWijeyaratne, M.J.S.; Costa, H.H.
1962Atyidae of Ceylon-IArudpragasam, K.D.; Costa, H.H.
1967Avoidance of anoxic water by tadpoles of Rana temporariaCosta, H.H.
1983Biological Studies of the Pearl Spot Etroplus suratensis (Pisces, Cichlidae) from three Different Habitats in Sri LankaCosta, H.H.
2004Cave dwelling bats in Sri LankaRubsamen, R.; Eckrich, M.; Costa, H.H.
1998A comparative study of the morphometrics, gill rakers and food of a stunned and a non-stunned populations of Oreochromis mossambicus (Peters) from Colombo (Beira) lake and Udawalawe reservoirEpa, U.P.K.; Costa, H.H.
1996Composition, abundance and distribution of aquatic Oligochaeta in Colombo (Beira) LakeWeerasundara, G.A.; Pathiratne, A.; Costa, H.H.
1979The distribution of Anostraca and Conchostraca (Crustacea) in the Jaffna PeninsulaSelvarajah, N.; Costa, H.H.
1984The ecology and distribution of free-living Meso and Macrocrustacea of inland watersCosta, H.H.
1998Effect of crowding, food quality and body size on food utilization of Pomacea canaliculata (Lamarck), (Gastropoda: Ampullaridae), an introduced potential snail pest of the rice paddy in Sri LankaKumara, P.A.D.A.; 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.
1966The effect of exercise on the survival of Phoxinus phoxinus L. in sodium cyanide solutioinsCosta, H.H.
1970Effects of some common insecticides and other environmental factors on the heart beat of Caridina pristisCosta, H.H.
1980The Effects of Some Heavy Metal Pollutants on the Heart Beat of Gammarus Pulex (L.)Costa, H.H.
1989Epidemiology of the epizootic ulcerative syndrome occurring for the first time among fish in Sri LankaCosta, H.H.; Wijeyaratne, M.J.S.
1986An experimental study on the culture of fry of Oreochromis mossambicus (Peters) in a peaty swamp in Sri Lanka using cow dung and poultry manure as fertilizerCosta, H.H.; Keembiahetty, C.N.
1987Fishery, seasonal abundance and mortality of grey mullets (Pisces; Mugilidae)in Negombo lagoon, Sri LankaWijeyaratne, M.J.S.; Costa, H.H.
1979The Food and Feeding Chronology of Yellow Perch (Perca flavescens) in Lake WashingtonCosta, 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.
1965The food of the tadpoles of Rhacophorus cruciger cruciger (Blyth)Costa, H.H.; Balasubramaniam, S.