Author: GSS Ganegoda, Pathmalal M Manage and S Pathirage
Journal: Journal of Ecotechnology Research
In the present study 800 well water samples were collected from five Grama Niladhari (GN) divisions situated in Maharagama, Sri Lanka. The area is highly populated and urbanized with a very shallow ground water table. Ground water quality was analyzed and compared with different GN divisions identifying well water contamination pattern using Principal Component Analysis (PCA).
Author: Hiran Wijesinghe, F. Sumaiya Idroos and Pathmalal M Manage
Journal: Sri Lanka Journal of Aquatic Sciences
Heavy metal contamination in aquatic ecosystems has become an emerging environmental issue. The stable physicochemical properties of heavy metals could result in bioconcentration and bioaccumulation in different organs of freshwater fishes. The present study records the accumulation of Lead (Pb), Cadmium (Cd), Chromium (Cr), Copper (Cu) and Zinc (Zn) in the head, muscle and skin regions of seven fish species namely, Labeo rohita, Oreochromis mossambicus, Oreochromis niloticus, Etroplus suratensis, Heteropneustes fossilis, Oligolepsis acutipennis and Puntius dorsalis collected from Minnerya, Parakrama Samudraya and Kaudulla reservoirs in Polonnaruwa district, Sri Lanka.
Author: G.Y. Liyanage, Pathmalal Manage
Journal: International Journal of Medical, Pharmacy and Drug Research (IJMPD)
Most antibiotics are metabolized incompletely by patients after administration and enter the municipal sewage with the patients’ excretion. Therefore, studies on the biodegradability of some clinically important drugs can be taken as a very first step of an environmental risk assessment. The present study reports the biodegradation of CIP by Lactobacillus gesseri, Enterobacter sp., Bacillus sp., Bacillus subtilius and Micrococcus luteus which were isolated as CIP resistance, non pathogenic bacteria.
Author: Pathmalal Manage
Journal: Sri Lanka Journal of Aquatic Sciences.
Antibiotics have been extensively and effectively used in aquaculture due to accelerated growth of aquaculture and this has resulted in the development of serious health problems in aquaculture, other animals, and human. The use of a wide variety of antibiotics in large amounts, including non-biodegradable antibiotics, ensures that they remain in the aquatic environment for a long time. This has resulted; the emergence of antibiotic-resistant bacteria in the environments, an increase of antibiotic resistance in fish pathogens, transfer of these resistance determinants to bacteria and then land animals and finally become human pathogens along with alterations of the bacterial flora both in sediments and in the water column. Thus, the global efforts are needed to promote more judicious use of prophylactic antibiotics in aquaculture as accumulating evidence indicates that unrestricted use is detrimental to fish, terrestrial animals and human health.
