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IRC-OUSL 2025
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03. BIOLOGICAL SCIENCES
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Browsing 03. BIOLOGICAL SCIENCES by Title

Browsing 03. BIOLOGICAL SCIENCES by Title

Now showing items 1-20 of 25

ASSESING DEGRADATION OF POLYCYCLIC AROMATIC HYDROCARBONS (PAHs) IN FRONT OF TIN (Sn) STRESS BY A SOIL BACTERIAL CONSORTIUM

Fernando, R. N. A.; Vidarshana, K. K. D. H.; Sajida, F.; Ilma, M. I. F.; Hasna, M. H.; Madanayake, K.; Dharmasiri, N. (The Open University of Sri Lanka, 2025)

Polycyclic Aromatic Hydrocarbons (PAHs) are persistent in the environment and are toxic pollutants which have carcinogenic and mutagenic properties. They are composed of two or more fused benzene rings. Bacteria present ...
BALANCED MEAL AND DIETARY FIBRE CONSUMPTION IN THE INDUSTRIAL WORKFORCE IN GAMPAHA, SRI LANKA

Gunasena, G. D. D. K.; Chamilal, P. G. S.; Wanigasekara, D. N. (The Open University of Sri Lanka, 2025)

The dietary behaviour of young adults in Sri Lanka is a key determinant of long-term health outcomes in the country. This study aimed to evaluate the daily dietary fibre (DF) intake and balanced meal consumption patterns ...
BIODEGRADATION OF RHODAMINE-B TEXTILE DYE USING CYANOBACTERIA UNDER OLIGOTROPHIC CONDITIONS

Kumari, R. M. C. P.; Udalagama, S. W. M. R. M. P. R.; Weeraarachchi, W. A. Y. B. S.; Wijerathne, K. M. S. D.; Bandara, S. M. D. C.; Ratnayake, R. R. (The Open University of Sri Lanka, 2025)

The persistence and resistance of Rhodamine-B and other analogous synthetic dyes in aquatic ecosystems are a cause of serious environmental and public health concern. Their persistence against degradation by conventional ...
COMMUNITY KNOWLEDGE, ATTITUDES, AND PRACTICES ON SEA TURTLE CONSERVATION IN MADIHA AND POLHENA, SRI LANKA

Abeywickrama, Hasali; Nilakarawasam, Nayana; Rodrigo, Wasana (The Open University of Sri Lanka, 2025)

The global sea turtle population is threatened due to anthropogenic activities. The coastline of Sri Lanka, including Madiha and Polhena beaches, provides critical habitats for five species of sea turtles. Their ...
COMPARATIVE ACTIVITY PATTERN ANALYSIS OF ENDEMIC CHEVROTAINS IN SRI LANKA

Tharinduni, W. A. L.; Hippala, H. M. U. K.; Gunathilaka, N. W. D. C. N.; Jayasekara, E. G. D. P.; Mahaulpatha, W. A. D. (The Open University of Sri Lanka, 2025)

Chevrotains are the most primitive ruminants, with few species surviving globally. Sri Lanka has two endemic species: Moschiola meminna in the dry zone and Moschiola kathygre in the wet zone. Data on their activity ...
DEVELOPMENT OF LARVAL STAGES OF Aedes aegypti IN POLLUTED WATER HABITATS IN COLOMBO DISTRICT AND THEIR SUSCEPTIBILITY TO TEMEPHOS INSECTICIDE

Liyanagedara, Nimasha (The Open University of Sri Lanka, 2025)

Dengue fever, primarily transmitted by Aedes aegypti and Aedes albopictus, affects approximately 400 million people worldwide annually. In Sri Lanka, recurring outbreaks have occurred since the 1960s, with severe ...
ECTOPARASITES OF CHIROPTERAN SPECIES IN THE MANNAR ISLAND AND POONERYN REGION OF SRI LANKA

Gunawansa, P.; Fernando, V. A. K.; Fernando, T. S. P.; Wijesinghe, M. R.; Weerakoon, D. K. (The Open University of Sri Lanka, 2025)

Bats are hosts to a variety of ectoparasites, which may impact their health and the transmission of zoonotic pathogens. However, studies on bat parasites in Sri Lanka are very limited and are mainly restricted to the ...
EFFECT OF CLIMATIC CHANGES ON REPORTED DENGUE CASES IN SRI LANKA: A RETROSPECTIVE STUDY FROM YEAR 2020 TO 2024

Wanasinghe, W. M. R. S; Herath, H. M. J. P; Kiridana, A. H. K.; Perera, A. P. S.; Bandaranayaka, K. O. (The Open University of Sri Lanka, 2025)

Dengue fever remains a significant public health challenge in Sri Lanka, with rising incidence and expanding geographic distribution in recent years. This study investigates the spatial and temporal variations of dengue ...
THE EFFECT OF SUGAR AND GINGER EXTRACTS AS FLORAL PRESERVATIVES TO INCREASE THE VASE LIFE OF CHRYSANTHEMUMS

Kumarasinghe, N. G. S. D.; Dhananjani, H. G. I.; Weerasooriya, S. W. J. D.; Dayananda, P. G. P. M.; Palleweediya, P. D. U.; Wijenayake, M. S. H.; Somarathna, U. G. I. N.; Weerasinghe, W. G. L. N.; Dharmarathna, S. M. Y. P; Senadheera, P. (The Open University of Sri Lanka, 2025)

Cut flowers play an important role in the commercial floriculture industry and bring export earnings that highly contribute to the economy of the country. Their vase life and longevity depend on the flower variety and ...
EFFECTS OF SOUND FREQUENCY ON GERMINATION AND SEEDLING GROWTH OF CHILI (Capsicum annuum) SEEDS

Gunawardhane, M. M. P.; Nisa, N. A. N. R.; Mandini, G. H. G. N.; Samarakoon, R. L. N. S.; Karunarathne, H. D. N. H.; Tikirikumari, J. A. T. (The Open University of Sri Lanka, 2025)

Optimization of crop productivity and sustainability should be achieved through optimization of seed germination and viability of seedlings. This study examined how certain sound frequencies affect the early development ...
EXPLORING THE ANTICANCER POTENTIAL OF Loranthus SPECIES: A BIBLIOMETRIC ANALYSIS

Deshan, M. H. G. R.; Madurapperuma, B. D. (The Open University of Sri Lanka, 2025)

Loranthus species, known as mistletoes, are gaining unprecedented attention as anticancer species. This review aims to explore and evaluate the anticancer potential of Loranthus species by examining their traditional ...
HABITAT PREFERENCE OF THE SRI LANKAN SLOTH BEAR (Melursus ursinus inornatus) IN RAINY SEASON USING OCCUPANCY MODELING IN WILPATTU NATIONAL PARK, SRI LANKA

Hippala, H. M. U. K.; Tharinduni, W. A. L.; Anawarathna, M. A. D. C. K.; Jayasekara, E. G. D. P.; Mahaulpatha, W. A. D. (The Open University of Sri Lanka, 2025)

The study focused on the endangered Sri Lankan sloth bear (Melursus ursinus inornatus), assessing its habitat preferences through occupancy modeling to improve target conservation efforts in protected areas. The study ...
HYDROGEN PEROXIDE-MEDIATED MODULATION OF GERMINATION RATE AND SEEDLING VIGOR IN Psophocarpus tetragonolobus (L.) DC.

Kumarasinghe, K. W. A. A. I.; Rankothge, M. N.; Senanayake, D. M. P. C.; Daulagala, P. W. H. K. P. (The Open University of Sri Lanka, 2025)

Winged bean (Psophocarpus tetragonolobus (L.) DC.), a tropical legume rich in protein, micronutrients, and antioxidants, holds significant potential for food security and sustainable agriculture due to its nutritional ...
IMPACT OF NUTMEG (Myristica fragrans) DOMINANCE ON VEGETATION COMPOSITION AND DIVERSITY IN KANDYAN HOME GARDENS

Mihiranga, K. K.; Seneviratne, S. M. M. P. K.; Madurapperuma, B. D. (The Open University of Sri Lanka, 2025)

Kandyan home gardens are well-established land use systems found in the mid country wet zone especially in and around the Kandy District. Due to their unique vegetation characteristics, these ecosystems play an important ...
INFLUENCE OF DISTURBANCE REGIMES ON FIG-WASP RELATIONSHIPS AND SYCONIAL CHARACTERISTICS OF Ficus tinctoria (MORACEAE) IN SOME SELECTED SITES OF KANDY AND MATALE DISTRICTS

Wijesinghe, W. M. A. U.; Wijetunga, W. M. G. A. S. T. B. (The Open University of Sri Lanka, 2025)

The fig–fig wasp interaction is an obligate mutualistic relationship. Ficus tinctoria (Moraceae) is a hemi-epiphytic dioecious fig tree species. The present study investigated the influence of vegetation disturbance ...
INFLUENCE OF OPERATIONAL SEX RATIO, SIZE, AND BODY COLORATION OF MALES ON MATE SELECTION AND MALE-MALE COMPETITION IN Poecilia reticulata (GUPPIES)

Ramanayake, P. C.; Katugampala, D. M.; Bandara, K. V. S. N.; Bandaranayaka, K. O. (The Open University of Sri Lanka, 2025)

The operational sex ratio (OSR) in fishes fundamentally describes the intensity of sexual selection and potential reproductive success. It reflects the ratio of sexually active males to sexually receptive females, ...
INTRASPECIFIC VARIATION IN SCHNEIDER’S LEAF-NOSED BAT (Hipposideros speoris) ACROSS THREE ECOLOGICALLY DISTINCT ROOSTS IN SRI LANKA

Samarakoon, S. M. P. S.; Fernando, T. S. P.; Wijesinghe, M. R. (The Open University of Sri Lanka, 2025)

Hipposideros speoris occurring across all bioclimatic zones is one of the most widespread bat species in Sri Lanka. This study focused on ecological traits and body morphometrics of three colonies of H. speoris from ...
INVESTIGATION OF THE ANTIOXIDATIVE AND SUN-PROTECTIVE PROPERTIES OF Aegle marmelos AND Cardiospermum halicacabum HERBAL EXTRACTS

Mandakini, A. A. D. M.; Dharmarathna, S. M. Y. P.; Fernando, B. A. K.; Nethmini, S. H. S.; Wasana, G. G. D.; Liyanagama, L. G. N. D.; Kumarasinghe, S. D. K.; Pemarathna, E. G. D. P. M.; Perera, G. D. M. V.; Senevirathne, S. M. A. P. (The Open University of Sri Lanka, 2025)

Medicinal plants are rich natural sources of bioactive phytochemicals and are widely used in the cosmetic industry due to their compatibility in types, with fewer side effects. Therefore, it is essential to assess their ...
LOW-COST MULTI-SENSOR PLATFORM FOR MONITORING INSECT BEHAVIORAL RESPONSES TO ENVIRONMENTAL CHANGE: A CASE STUDY IN ANTS

Bamunusingha, Y. D.; Bandaranayaka, K. O.; Illeperuma, G. D. (The Open University of Sri Lanka, 2025)

Insect foraging behaviour is influenced by various environmental factors; however, continuous monitoring under natural conditions remains technically and financially challenging. In this study, we present a cost-effective, ...
MICROPLASTIC CONTAMINATION IN SELECTED SHRIMP FARMS AND ADJACENT WATER BODIES IN PUTTALAM DISTRICT, SRI LANKA

Basnayake, B. M. K. G.; Dahanayake, D. D. G. L. (The Open University of Sri Lanka, 2025)

Microplastics (MPs) have emerged as a widespread environmental pollutant, posing significant threats to aquatic ecosystems and human health. This study investigated the prevalence, distribution, and characteristics of ...

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