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Articles by K.P. Kumaraguru Vasagam
Total Records ( 2 ) for K.P. Kumaraguru Vasagam
  R. Venkatesan , K.P. Kumaraguru Vasagam and T. Balasubramanian
  Marine microalgal species such as Skeletonima costatum and Chaetoceros coarctatus were cultured in Discharge Water (DW) from shrimp culture pond to recover the organic and inorganic nutrients released as waste. Total nitrogen (N), nitrate-N and total phosphorus in the DW were observed significantly higher and their mean values were 95.261, 32.6 and 11.312 mg L-1, respectively. Algal species were cultured in processed DW under 12 h light/12 h dark condition with light intensity of 6000-7000 Lux and compared with cultures made in standard Conway medium which served as a control. Cell density was obtained higher over the control by 30.1 and 20.0% in S. costatum and C. coarctatus respectively in DW. While the rate of nitrogen removal was between 42.3 and 47.2%, the phosphorus removal efficiency was 20.8 and 17.7% in S. costatum and C. coarctatus respectively. The present study inferred that, as it is a low cost technology for microalgal production as well as a mean for waste water treatment, marine microalgal culture in DW from shrimp farm will be a two in one approach towards sustainable utilization of aquatic resource.
  K.P. Kumaraguru Vasagam , M. Rajkumar , Jean-Paul Trilles and T. Balasubramanian
  Lernaea cyprinacea, a parasitic cyclopoid copepod, is reported parasitizing sailfin molly Poecilia latipinna breeders, cultured in the Center of Advanced Study in Marine Biology, Parangipettai (India). The fish were severely infected on their body surface with the highest number of 38 parasites per host. Feeding and reproductive activities, including spawning, stopped following parasitic infection. The parasites are females unsegmented, sub-cylindrical shaped and 20 mm in length. They are provided with paired appendages including prominent egg sacs. This is the first report on their occurrence in the cultured ornamental fish P. latipinna, in India. Lernaea infection was successfully controlled by gradually changing the water salinity to 10‰.
 
 
 
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