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Browsing by Author Costa, H.H.
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Showing results 35 to 54 of 62
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Issue Date
Title
Author(s)
1988
Reproductive strategy and feeding of Dussumier's mullet, Liza dussumieri Valenciennes from a coastal lagoon in Sri Lanka
Wijeyaratne, M.J.S.
;
Costa, H.H.
1992
Resource partitioning of two commercially important cichlid species in there minor perennial reservoirs in the north-western province of Sri Lanka
Wijeyaratne, M.J.S.
;
Costa, H.H.
1965
Responses of freshwater animals to sodium cyanide solutions
Costa, H.H.
1966
Responses of Gammarus Pulex (L.) To Modified Environment
Costa, H.H.
1967
Responses of Gammarus pulex (L.) to Modified Environment II. Reactions to Abnormal Hydrogen Ion Concentrations
Costa, H.H.
1967
Responses of Gammarus Pulex (L.) To Modified Environment Iii. Reactions to Low Oxygen Tensions
Costa, H.H.
1980
Results of the Austrian Hydrobiological Mission, 1974, to the Seychelles-, Comores- and Mascarene-Archipelagos: Part III: The Ecology and the Distribution of Decapoda Caridea in the Indian Ocean Islands of Seychelles, Mauritius, Comores & RĂ©union
Costa, H.H.
1984
Results of the Austrian-Indian Hydrobiological Mission 1976 to the Andaman-Islands: Part V: Taxonomy and Ecology of the Decapoda-Caridea
Costa, H.H.
1999
Species composition and abundance of aquatic oligochaetes in Ihalagama reservoir, a shallow perennial minor reservoir in Sri Lanka
Weerasundara, G.A.
;
Pathiratne, A.
;
Costa, H.H.
2000
Species composition and abundance of littoral oligochaete fauna in Lunuwila reservoir, Sri Lanka
Weerasundara, A.
;
Pathiratne, A.
;
Costa, H.H.
1997
Species composition, abundance and distribution of aquatic oligochaetes in Colombo (Beira ) lake, Sri Lanka
Costa, H.H.
;
Weerasundara, G.A.
;
Pathiratne, A.
1981
Stocking Rate Estimations of Tilapia mossambica Fingerlings for some Inland Reservoirs of Sri Lanka
Wijeyaratne, M.J.S.
;
Costa, H.H.
1998
Studies of the metamorphic stages of the endemic frog Limnonectes greeni (Amphibia: Ranidae) and Mycrohyla zeylanica (Amphibia: Micrihylidae) from Sri Lanka
Weerawardena, S.R.
;
Costa, H.H.
1998
Studies of the metamorphic stages of the endemic frog Limnonectes greeni (Amphibia: Ranidae) and Polypedates eques (Amphibia: Rhacophridae)
Weerawardena, S.R.
;
Costa, H.H.
1964
Studies on the reponses of fresh water animals to toxic substances and low oxygen tensions
Costa, H.H.
1986
The susceptibility and resistance of fry and fingerlings of Oreochromis mossambicus Peters to some pesticides commonly used in Sri Lanka
Shafiei, T.M.
;
Costa, H.H.
1990
The susceptibility and resistance of fry and fingerlings of Oreochromis mossambicus Peters to some pesticides commonly used in Sri Lanka
Shafiei, T.M.
;
Costa, H.H.
2004
A systematic study of freshwater Oligochaetes from Sri Lanka II
Weerasundara, G.A.
;
Costa, H.H.
1987
The Biology of grey Mullets in a tropical lagoon in Sri Lanka I-Age and growth
Wijeyaratne, M.J.S.
;
Costa, H.H.
1995
The 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.