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Articles by K. Elumalai
Total Records ( 2 ) for K. Elumalai
  S. Balakrishnan , M. Srinivasan and K. Elumalai
  A preliminary survey of mosquito diversity in the different habitats of the Parangipettai coast, southeast coast of India was made during March, 2007 to February, 2008, for a qualitative and quantitative assessment of mosquito distribution. Different habitats were selected as sampling stations; such as mangrove, estuarine and salt marsh ecosystem. Bimonthly collections were made with the Shannon trap and human bait, including diurnal, crepuscular and nocturnal period of mosquito activity. A total of 337 individuals of mosquito species belonging to 3 genera, 5 families and 7 orders were collected from all the three habitats. In summer season totally 107 individuals, in rainy season 148 individuals and in winter season 82 individuals were recorded. Different statistical tools were used to know the Shannon-Weaver diversity index (2.37-2.356), Simpson’s index (0.9039-0.9016), Margalef richness (2.269-2.001) and Pielou’s evenness (0.9725-0.9589) of mosquitoes. The possible causes of these differences are discussed.
  N.K. Udaya Prakash , S. Bhuvaneswari , B. Jahnavi , K. Abhinaya , A. Gulbsy Rajalin , M. Prathap Kumar , G. Sundraraman , K. Elumalai , S. Devipriya , V. Kannan , V. Sriraman and G. Kathiravan
  The present study reports the antibacterial potency of the methanolic extract of 25 common weeds, Abutilon indicum, Acalypha indica, Ageratum conyzoides, Alangium platanifolium, Anisomeles sp., Boerhavia diffusa, Cardiospermum helicacabum Cassia alata, Centella asiatica, Coccinia grandis, Commelina benghalensis, Corchorus sp., Croton sparsiflorus, Dodonea viscosa, Hyptis sauveolens, Lantana camara, Leonotis nepetifolia, Mimosa pudica, Martinea annua, Occimum americanum, Oldenlandia umbellata, Parthenium hysterophorus, Solanum nigrum, Tinospora cordifolia and Xanthium stromarium belonging to 15 different families. The plants were collected from the districts of Chengalpet, Chennai, Kancheepuram, Vellore and Tiruvellore belonging to the Northern part of the State of Tamil Nadu. The antibacterial property were determined using disc diffusion method on the following species of bacteria, i.e., Bacillus subtilis (MTCC121), Escherichia coli (MTCC443), Staphylococcus aureus (MTCC96), Streptococcus mutans (MTCC890) and Klebsiella pneumoniae (MTCC1320). The following weeds, Parthenium hysterophorus, Leonotis nepetifolia, Martinea annua and Xanthium stromarium have showed positive zone of inhibition to all the bacteria studied.
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