Browsing by Author "Chandrasekera, L.W.H.U."

Abundance and diversity of freshwater molluscs in some selected reservoirs of the Kala Oya river basin, Sri Lanka

Weerakoon, S.N.; Chandrasekera, L.W.H.U.; Amarasinghe, U.S. (Sri Lanka Association for Fisheries and Aquatic Resources, 2015)

Benthic macroinvertebrates such as molluscs are known to be possible bioindicators of aquatic ecosystems. We carried out a study to investigate how the abiotic factors affect the abundance and diversity of molluscan fauna ...

Accidental introduction of alien plankton into the Sri Lankan coastal zone through ballast water of cargo ships

Chandrasekera, L.W.H.U.; Fernando, M.A.S.T. (Sri Lanka Association for Fisheries and Aquatic Resources, 2009)

Accidental introduction of alien plankton through ballast water is a major ecological issue in many countries in the world. As there are no local studies addressing this problem, the present study was carried out to see ...

Acetylcholinesterase inhibition in Nile tilapia, Oreochromis niloticus following exposure to low concentrations of Chlorpyrifos and Carbosulfan: exposure– response relationships in fry, fingerlings and sub-adults

Chandrasekera, L.W.H.U.; Pathiratne, A. (Sri Lanka Association for Fisheries and Aquatic Resources, 2004)

Acetylcholinesterase (AChE) inhibition is considered as a specific biomarker of exposure and effect for organophosphorous and carbamate pesticides. Oreochromis niloticus, which is an abundant food fish in inland water ...

Alaboratoryassessment of the survival and verticalmovement of twoepibenthicgastropodspecies, Hydrobia ulvae (Pennant) and Littorina littorea (Linnaeus), afterburial in sediment

Chandrasekera, L.W.H.U.; Frid, C.L.J. (Journal of Experimental Marine Biology and Ecology, 1998)

Physical disturbance may result in the burial of the epibenthic fauna in sediment. The patches thus created undergo a `recovery' which may include the buried fauna migrating through the sediment to regain their original ...

Biological factors affecting brain and muscle acetylcholinesterases in Oreochromis niloticus (Nile tilapia): Implications in biological monitoring of aquatic pollution

Chandrasekera, L.W.H.U.; Pathiratne, A. (Sri Lanka Association for the Advancement of Science, 2005)

Chandrasekera, L.W.H.U.; Pathiratne, A. (Ecotoxicology and Environmental Safety, 2007)

Effect of biological and technical factors on brain and muscle cholinesterases in Nile Tilapia(Oreochromisniloticus): Implications for biomonitoring neurotoxic contaminations

Pathiratne, A.; Chandrasekera, L.W.H.U.; de Seram, P.K.C. (Archives of Environmental Contamination and Toxicology, 2008)

Influence of body length, body weight, gender, sexual maturity, and tissue storage on brain and muscle cholinesterases (ChE) in Nile tilapia was evaluated considering its potential use in biomonitoring neurotoxic contaminations ...

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. (Sri Lanka Association for Fisheries and Aquatic Resources, 1999)

Effects of biological and technical factors on brain and muscle cholinesterases in Nile tilapia, Oreochromis niloticus: implications for biomonitoring neurotoxic contaminations

Pathiratne, A.; Chandrasekera, L.W.H.U.; De Seram, P.K.C. (Springer-Verlag., 2008)

Influence of body length, body weight, gender, sexual maturity, and tissue storage on brain and muscle cholinesterases (ChE) in Nile tilapia was evaluated considering its potential use in biomonitoring neurotoxic contaminations ...

Effects of human trampling on tidalflat infauna

Chandrasekera, L.W.H.U.; Frid, C.L.J. (Aquatic Conservation: Marine and Freshwater Ecosystems, 1996)

1.?Human trampling has been shown to be detrimental to the survival of fauna of terrestrial habitats and on rocky coastal areas. However, its effects on saltmarsh benthic infauna were not known. 2.?The abundance of ...

Effects of Pyrene exposure on Xenobiotic metabolizing enzymes in Nile Tilapia, Oreochromis niloticus

Chandrasekera, L.W.H.U.; Pathiratne, A. (Sri Lanka Association for Fisheries and Aquatic Resources, 2005)

Effects of waterborne cadmium on biomarker enzymes and metalothioneins in Nile tilapia, Oreochromis niloticus

Chandrasekera, L.W.H.U.; Pathiratne, A.; Pathiratne, K.A.S. (Journal of National Science Foundation of Sri Lanka, 2008)

Cadmium is widely used in modern industry and ranks among the most toxic metals in the aquatic ecosystems. In the present study, activities of several biomarker enzymes viz. ethoxyresorufin O-deethylase (EROD), glutathione ...

Evaluation of selected biomarkers in Nile tilapia (Oreochromis niloticus) as tools in monitoring aquatic pollution in Sri Lanka

Chandrasekera, L.W.H.U. (2010)

Induction of pollutant responsive biomarkers, ethoxyresorufin–Odeethylase, glutathione S-transferase and biliary fluorescent aromatic compounds in tilapia inhabiting Bolgoda North Lake, Sri Lanka.

Chandrasekera, L.W.H.U.; Pathiratne, A.; Pathiratne, K.A.S. (Proceedings of the Annual Research Symposium 2005-Faculty of Graduate Studies, University of Kelaniya, 2005)

The presence of organic contaminants in aquatic systems poses a serious threat to environmental health. Biomarkers are sub-lethal biological measures of the response to and effect of pollutants in living organisms. Use ...

A preliminary study on the invasion of plankton into the west coast off Sri Lanka through ballast water

Chandrasekera, L.W.H.U.; Fernando, M.A.S.T. (Sri Lanka Association for Fisheries and Aquatic Resources, 2009)

Response of Brain and Liver Cholinesterases of Nile Tilapia,Oreochromis niloticus, to Single and Multiple Exposures of Chlorpyrifos and Carbosulfan

Chandrasekera, L.W.H.U.; Pathiratne, A. (Environmental Contamination and Toxicology, 2005)

Role of the gastropod Terebralia palustris (Linnaeus, 1767) in Rhizophora apiculata leaf litter decomposition

Ponweera, N.I.; Chandrasekera, L.W.H.U. (Sri Lanka Association for Fisheries and Aquatic Resources, 2004)

Macro-invertebrates play an important role in the breakdown of leaf litter in the mangrove ecosystems. Among them, the gastropod Terebralia palustris L., is considered to be an important species that significantly contribute ...

The spatial variation of macrobenthic community in the Negombo estuary in relation to physic-chemical parameters

Chandrasekera, L.W.H.U.; Hettiarachchi, A.I. (Sri Lanka Association for Fisheries and Aquatic Resources, 2011)

The effects of Relic fauna on initial patch colonisation in a British saltmarsh

Chandrasekera, L.W.H.U.; Frid, C.L.J. (Netherlands Journal of Aquatic Ecology, 1996)

When a disturbance impacts an area it rarely leads to a complete defaunation, some individuals survive forming a relic fauna. Relic fauna in azoic patches in an intertidal soft-bottom habitat were simulated by the separate ...

The restoration of mud flats invaded by common cord-grass (Spartina anglica, CE Hubbard) using mechanical disturbance and its effects on the macrobenthic fauna

Frid, C.L.J.; Chandrasekera, L.W.H.U.; Davey, P. (Aquatic Conservation: Marine and Freshwater Ecosystems, 1999)

1. The growth of the common cord-grass, Spartina anglica, across many temperate coastlines has resulted in a reduction in the extent of tidal flats. Its colonization has reduced the abundance of macrobenthic fauna and hence ...

Browsing by Author "Chandrasekera, L.W.H.U."

Browsing by Author "Chandrasekera, L.W.H.U."

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