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Articles by T. Kannupandi
Total Records ( 4 ) for T. Kannupandi
  P. Soundarapandian , N. John Samuel , S. Ravichandran and T. Kannupandi
  In this study, the distribution of crabs in Pichavaram was recorded from December 2001 to November 2002 at monthly intervals. The species present on the substratum and on the vegetation area were recorded in quadrant each measuring 1 m2. There are about 36 crabs species are distributed in Pichavaram mangrove environment. Crabs belonging to the family Grapsidae and Ocypodidae are most dominant forms. Substrate suitability; effects of tidal inundation and distribution of mangrove plants were the possible factors that could influence zonation and abundance of the crabs in the Pichavaram mangroves. The reason for depletion of crabs and their conservation measures are also discussed.
  P. Sivanandavel , P. Soundarapandian and T. Kannupandi
  To assess the effect of various feed ingredients on growth, survival, production and feed conversion ratio of Penaeus indicus. Four uniform size rectangular cages (10x5x1.5 m) were erected on the bottom soil substrate. All these cages were uniformly stocked at the rate of 50 m-2 with juveniles of size ranging from 3.3 to 4.1 g. The shrimps of the first cages were fed with fish meal based diet, the second with clam meal based diet, the third with soyaben based diet and fourth with mixed diet of fish meal, clam meal and soyabean. As the culture was carried out for 100 days, all the cages were changed at regular interval of 34 days. The higher growth 22.9 g, survival rate 97%, production rate 1110.65 g m-2 and better feed conversion ratio 1:1:8 were observed for the shrimps fed with the mixed diet.
  P. Soundarapandian , P. Sivanadavel and T. Kannupandi
  The present study was designed to find out the suitability of white shrimp, Penaeus monodon in the cages of Vellar estuary. In the previous experiments, the autoentrants and fouling were found to be disturbing the production and hence the present study deals with the controlling of this problem by changing the cages with fresh cages at regular intervals except control. Among the four uniform size rectangular cages (10X5X1.5 m) used, the first cage was treated as control, the second cage was changed at 15 days interval, the third cage was changed at 30 days interval and the fourth cage was changed at 60 days intervals. The culture was carried out for 120 days and the juveniles of size ranging from 3.3 to 4.0 g were stocked uniformly at the rate of 20 m-2 for all the cages. In the cage changed at 15 days interval, the autoentrants and fouling species were found to be less. The maximum growth of 25.5 g, survival rate of 96% and production rate of 491.52 g m-2 were recorded in the cage changed at the interval of 30 days. From the findings of the present study, it is suggested that the cage changed every 30 days regular interval is ideal for the higher production of P. indicus.
  S. Ravichandran , A. Anthonisamy , T. Kannupandi and T. Balasubramanian
  Leaf consuming mangrove crabs play an important role in the initial processing of litter in low to mid intertidal riverine and fringing forests. In Pichavaram mangrove, the sesarmid crabs are dominant, leading mostly herbivorous mode of life and play a vital role in the process of leaf degradation and thus in biogeochemical cycles. The gut content analysis also showed they are mainly consumed vascular plant matter (58.33 to 72.54%). Sesarmid crabs strongly preferred 40 day decomposed Avicennia marina leaves when both fresh and 10, 20, 40, 60, 80, 90 and 100 days decomposed leaves of A. marina, Rhizophora mucronata and Acanthus ilicifolius were offered. Sesarmid crabs are important not only because of their burrowing activities, which can affect nutrient cycling and forest productivity but also their role as a link in the food web in the mangrove ecosystem.
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