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Articles by M. Arumugam
Total Records ( 2 ) for M. Arumugam
  S. Kanchana , R. Vennila , K. Rajesh Kumar , M. Arumugam and T. Balasubramanian
  Marine mollusc paved a way for the isolation of bioactive compounds. Therefore, the present study was to investigate the Antimicrobial and cytotoxicity activities on 25 mollusc samples. The antibacterial activity was conducted against six human pathogens and anti fungal activity was tested against two fungal strains by the disc diffusion method. Further, in vitro toxicity assays such as hemolytic activity was done in microtiter plates method and Brine shrimp toxicity assay were tested against Artemia μg. The potent antibacterial activities were found against Staphylococcus aureus, Vibrio cholera and Salmonella paratyphi and the high degree of anti fugal activity in Aspergillus fumigatus than Fusarium sp. The hemolytic activity was detected in Meretrix casta, Sepia officinalis, Lophiotoma indica, Octopus vulgaris, Sepia officinalis ink, Ficus ficus, Xancus pyrum, Natica picta, Turrittella attenuata, Architectonica sp. The Brine Shrimp toxicity (LC50) was also found in Conus betilinus, Hemifusus pugilinus, Burselltalla leachi, Lambis lambis, Ficus ficus, Conus adustus. The results revealed that mollusc samples are a promising source for identifying novel drug lead compounds.
  P. Damotharan , N. Vengadesh Perumal , M. Arumugam , P. Perumal , S. Vijayalakshmi and T. Balasubramanian
  The spatial, temporal and tidal dynamics of the zooplankton community of the Kodiakkarai (also known as point calimere ) was studied from September 2006 to August 2007. The monthly sampling procedure included the measurement of hydrological parameters salinity, temperature, pH and the collection of zooplankton with plankton net (0.35 m mouth diameters), made up of bolting silk (Cloth No. 10; mesh size 158) for 20 min. The hydrographical parameters were found to very month-wise and station-wise. Air temperature showed summer peak and pre-monsoon, post-monsoon and monsoon decline and the variations were associated with the seasonal changes of meteorological events. Salinity was high during the post monsoon and summer seasons and low during the monsoon season at both stations and was mainly influenced by the rainfall pattern. pH was high during the monsoon and summer seasons and low during the monsoon and post-monsoon seasons at both stations and the rainfall mainly influenced the variation. Dissolved oxygen concentration was high during the monsoon season and low during the summer season at both stations. Distribution of dissolved nutrients also exhibited considerable seasonal due to the flooding and land runoff. The silicate concentration was especially found to be much higher than other nutrients. Among the 121 zooplanktonic forms recorded, the Copepoda formed the dominant group followed by larvae.
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