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Browsing by Author Costa, H.H.
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Showing results 9 to 28 of 62
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Issue Date
Title
Author(s)
1984
The ecology and distribution of free-living Meso and Macrocrustacea of inland waters
Costa, H.H.
1998
Effect 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 Lanka
Kumara, P.A.D.A.
;
Costa, H.H.
1999
Effect of crowding, food quality and body size on food utilization of the exotic snail, Pomacea canaliculata (Lamarck), a potential pest of rice in Sri Lanka
Kumara, P.A.D.A.
;
Chandrasekera, L.W.H.U.
;
Costa, H.H.
1966
The effect of exercise on the survival of Phoxinus phoxinus L. in sodium cyanide solutioins
Costa, H.H.
1970
Effects of some common insecticides and other environmental factors on the heart beat of Caridina pristis
Costa, H.H.
1980
The Effects of Some Heavy Metal Pollutants on the Heart Beat of Gammarus Pulex (L.)
Costa, H.H.
1989
Epidemiology of the epizootic ulcerative syndrome occurring for the first time among fish in Sri Lanka
Costa, H.H.
;
Wijeyaratne, M.J.S.
1986
An 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 fertilizer
Costa, H.H.
;
Keembiahetty, C.N.
1987
Fishery, seasonal abundance and mortality of grey mullets (Pisces; Mugilidae)in Negombo lagoon, Sri Lanka
Wijeyaratne, M.J.S.
;
Costa, H.H.
1979
The Food and Feeding Chronology of Yellow Perch (Perca flavescens) in Lake Washington
Costa, H.H.
1990
FOOD AND FEEDING OF TWO SPECIES OF GREY MULLETS VALAMUGIL BUCHANANI (BLEEKER)AND LIZA VAIGIENSIS QUOY AND GAIMARD INHABITING BRACKISHWATER ENVIRONMENTS IN SRI LANKA
Wijeyaratne, M.J.S.
;
Costa, H.H.
1965
The food of the tadpoles of Rhacophorus cruciger cruciger (Blyth)
Costa, H.H.
;
Balasubramaniam, S.
1986
Food, feeding and fecundity of the giant freshwater prawn Macrobrachium rosenbergii from natural habitats in Sri Lanka
Costa, H.H.
;
Wanninayaka, T.B.
1986
Food, feeding and fecundity of the giant freshwater prawn Macrobrachium rosenbergii from natural habitats in Sri Lanka
Costa, H.H.
;
Wanninayaka, T.B.
1987
Foraging behaviour and echolocation in the rufous horseshoe bat (Rhinolophus rouxi) of Sri Lanka
Neuweiler, G.
;
Metzner, W.
;
Heilmann, U.
;
Rübsamen, R.
;
Eckrich, M.
;
Costa, H.H.
1986
Growth, mortality and seasonal abundance of grey mullets in Negombo estuary
Wijeyaratne, M.J.S.
;
Costa, H.H.
1988
Hydrobiology and fish production potential of major freshwater reservoirs in Hambantota district
Daniel, D.J.
;
Costa, H.H.
;
Wijeyaratne, M.J.S.
2005
Inflight and Outflight Activity Patterns of Five Species of Cave Dwelling Bats in Sri Lanka
Yapa, W.B.
;
Ratnasooriya, W.D.
;
Costa, H.H.
;
Rubsamen, R.
1995
The invertebrate fauna colonizing two submerged aquatic plants in the stream at Horton Plains, Sri Lanka
Ganehiarachchi G.A.S.M.
;
Costa, H.H.
1983
Limnology and Fish production potential of some reservoirs in Anuradhapura District, Sri Lanka
Amarasinghe, U.S.
;
Costa, H.H.
;
Wijeyaratne, M.J.S.