Zoology: Recent submissions

Now showing items 81-100 of 762

The Ants (Hymenoptera, Formicidae) of Sri Lanka: a taxonomic research summary and updated checklist

Dias, R.K.S.; Guénard, B.; Akbar, S.A.; Economo, E.P.; Udayakantha, W.S.; Wachkoo, A.A. (ZooKeys 967, 2020)

An updated checklist of the ants (Hymenoptera: Formicidae) of Sri Lanka is presented. These include representatives of eleven of the 17 known extant subfamilies with 341 valid ant species in 79 genera. Lioponera longitarsus ...
Habitat related variations and comparison of fatty acid composition of muscle and stomach contents of secondarily colonized Malabar Sprat (Ehirava fluviatilis) in Sri Lanka

de Zoysa, H.K.S.; Amarasinghe, U.S.; Edirisinghe, E.M.R.K.B.; Sundarabarathy, T.V. (NeBIO, An International Journal of Environment and Biodiversity, Vol.10(3), pp.152-163, 2019)

Ehirava fluviatilis is a marine origin clupeid found in Southern India and Sri Lanka, also found in two freshwater lakes, namely Parakarama Samudraya and Rajanaganaya reservoir, and that places are identified as secondarily ...
Diagnosis of Vespa affinis venom allergy:use of immunochemical methods and a passive basophil activation test

Gunasekara, P.; Handunnetti, S.M.; Premawansa, S.; Kaluarachchi, P.; Karunatilake, C.; Ratnayake, I.P.; Dias, R. K. S.; Premakumara, G. A. S.; Dasanayake, W. M. D. K.; Seneviratne, S.L.; de Silva, R. (Allergy, Asthma & Clinical Immunology, 2019)

Background: Allergy to Vespa affinis venom is common in the Asia Pacific region. Venom preparations for diagnosis are not commercially available for this species. Methods: The prominent allergens in V. affinis venom were ...
Effects of a gel bait on the suppression of noxious Crematogaster rogenhoferi Mayr, 1879 (Formicidae: Myrmicinae) in Sri Lanka

Dias, R.K.S.; Udeshika, K.G.I. (Caucasian Entomological Bulletin, Vol. 15. No.2., 2019)

Crematogaster rogenhoferi Mayr, 1879 in a home garden in Sri Lanka was reported to cause health hazards and an investigation was conducted from February to November in 2016 to list the tree species bearing its nests and ...
Influence of hydrology on water quality and trophic state of irrigation reservoirs in Sri Lanka

Nadarajah, S.; Wijenayake, W.M.H.K.; Amarasinghe, U.S. (Lakes & Reservoirs: Science, Policy and Management for Sustainable Use, 2019)

Many reservoirs provide multiple benefits to people around the world, in addition to primary uses such as irrigation. Thus, reservoir management should address their multiple uses. The water quality of ten irrigation ...
Comparison of trophic structure of fish assemblages in two tropical steams in Sri Lanka: a seasonal dry zone stream and a perennial wet zone stream

Weliange, W.S.; Amarasinghe, U.S.; Vijverberg, J.; Leichtfried, M.; Füreder, L. (International Review of Hydrobiology, 2019)

Most tropical rivers especially in the Asian region, are severely impacted by various human perturbations, and the diverse habitats in streams support rich invertebrate and vertebrate communities. It is hypothesized that ...
Dietary Guild Structure in Fish Assemblages and Trophic Position of Constituent Species in Brush Parks of a Tropical Estuary

Gammanpila, M.; Amarasinghe, U.S.; Wijeyaratne, M.J.S. (Asian Fisheries Society, 2019)

Trophic guild structure and dietary niche breadth in tropical fish communities are important to identify functional groups and to understand how trophic positions of constituent species help coexistence. Objective of the ...
Comprehensive evaluation of demographic,socio-economic and other associated risk factors affecting the occurrence of dengue incidence among Colombo and Kandy Districts of Sri Lanka: a cross-sectional study

Udayanga, L.; Gunathilaka, N.; Iqbal, M.C.M.; Lakmal, K.; Amarasinghe, U.S.; Abeyewickreme, W. (Parasites & Vectors (2018) 11:478, 2018)

Background: Comprehensive understanding of risk factors related to socio-economic and demographic status and knowledge, attitudes and practices (KAP) of local communities play a key role in the design and implementation ...
On the retirement of an eminent scientist in fisheries and aquatic science in Sri Lanka: a personal approach

Amarasinghe, U.S. (Sri Lanka J. Aquat. Sci. 23(1) (2018): 1-2, 2018)

The current issue of Sri Lanka Journal of Aquatic Sciences is dedicated to Professor M.J.S. Wijeyaratne (Department of Zoology & Environmental Management, University of Kelaniya, Sri Lanka) for his 40 years of uninterrupted ...
Influence of Fishing Pressure and Water Level Fluctuations on the Reproductive Biology Traits of Oreochromis niloticus (Linnaeus 1758) in Irrigation Reservoirs of Sri Lanka

Bandara., K.V.S.N.; Amarasinghe, U.S. (Asian Fisheries Science 31 (2018):127–145, 2018)

The reproductive biological characteristics of Oreochromis niloticus (Linnaeus 1758) were investigated in relation to fishing pressure and water level fluctuation in 10 irrigation reservoirs of Sri Lanka. It was found ...
Life history patterns of some selected endemic freshwater fish species inhabiting two major river basins of Sri Lanka

Shirantha, R.R.A.R.; Wijeyaratne, M.J.S.; Amarasinghe, U.S. (Sri Lanka J. Aquat. Sci. 23(1) (2018): 77-84, 2018)

Life history information on six endemic fish species namely Belontia signata, Pethiya cumingii, P. nigrofasciata, Puntius titteya, Rasboroides vaterifloris and Garra ceylonensis inhabiting the Kalu Ganga and Kelani Ganga ...
Inland aquatic resources

Jayasinghe, J.M.P.K.; Amarasinghe, U.S. (Natural Resources of Sri Lanka, Chapter 15, 2015)

Sri Lanka is rich in inland aquatic resources which includes 103 rivers with a cumulative basin area of 59,245 km2, accounting for 90% of the country’s land area. The total extent under inland reservoirs is about 200,000 ...
Cattle and water buffalo densities wading into small village reservoirs of Sri Lanka impact on yields on the culture-based fisheries thereof

Jayasinghe, A.D.; Athula, J.A.; De Silva, S.S.; Amarasinghe, U.S. (Sri Lanka J. Aquat. Sci. 23(1) (2018): 67-75, 2018)

This study investigated whether allochthonous inputs generated by cattle and water buffaloes grazing in the catchment or wading in the water in small village reservoirs of Sri Lanka can make a significant effect on yields ...
Factors related to nesting sites of Oreochromis niloticus (Cichlidae) in irrigation reservoirs, Sri Lanka

Bandara, K.V.S.N.; Amarasinghe, U.S. (Asian Fisheries Science, 2017)

The nesting sites of Oreochromis niloticus (Linnaeus 1758) were studied in 10 irrigation reservoirs of Sri Lanka from April 2014 to April 2016 to understand the influencing factors. The optimal nesting depth and nest ...
Length-based stock assessment of Oreochromis mossambicus and O. niloticus (Actinopterygii: Perciformes: Cichlidae) in multi-mesh gillnet fisheries in reservoirs of Sri Lanka. Acta Ichthyologica et Pischatoria

Amarasinghe, U.S.; Jayasinghe, R.P.P.K.; Moreau, J. (An International Journal for Ichthyology and Fisheries, 2017)

Background. Gillnets of mesh sizes (6.9 to 12.7 cm) are used in individual boats in Sri Lankan reservoirs targeting exotic cichlid species, Oreochromis mossambicus (Peters, 1852) and Oreochromis niloticus (Linnaeus, 1758), ...
Morphological correlates with diet of fish assemblages in brush park fisheries of tropical estuaries.

Gammanpila, M.; Amarasinghe, U.S.; Wijeyaratne, M.J.S. (Environmental Biology of Fishes., 2017)

Brush park fishery in Negombo estuary, Sri Lanka is a traditional fishing practice which relies on fishes attracted to artificial woody fish aggregation devices. This study investigates whether constituent species in these ...
Longitudinal variation of benthic macroinvertebrate communities in two contrasting tropical streams in Sri Lanka.

Weliange, W.S.; Leichtfried, M.; Amarasinghe, U.S.; Füreder, L. (International Review of Hydrobiology, 2017)

The benthic macroinvertebrate fauna and main abiotic parameters were studied to understandthe patterns of diversity and structure along the temporal and longitudinal gradients in twotropical lotic ecosystems in the wet and ...
Evaluation of status of commercial fish stocks in European marine subareas using mean trophic levels of fish landings and spawning stock biomass

Jayasinghe, R.P.P.K.; Amarasinghe, U.S.; Newton, A. (Ocean and Coastal Management, 2016)

Most of the fish stocks in the world, including European fish stocks, are threatened by overfishing and/or degraded environmental conditions. Although the Common Fisheries Policy (CFP) is the main policy instrument managing ...
Dissolution of ZnO nanoparticles at circumneutral pH: a study of size effects in the presence and absence of citric acid

Mudunkotuwa, I.A.; Rupasinghe, T.; Ming Wu, C.; Grassian, V.H. (American Chemical Society., 2011)

Understanding size-dependent processes, including dissolution, of engineered nanoparticles is essential in addressing the potential environmental and health impacts of these materials as well as their long-term stability. ...
In vitro metabolism of benzene, toluene, and xylene in rat liver

Pathiratne, A. (North Dakota State Univ., Fargo (USA)., 1985)

A headspace gas chromatographic method was used to study the metabolism of benzene, toluene, and m-xylene in rat liver. Metabolism of benzene was lower than that of toluene, or m-xylene. Investigating metabolic rates of ...

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