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Chairman: Dr. Krishna M.B.

Rapporteur: Ajay Narendra

Biodiversity of Rotifers in Fort Lake of Belgaum City, North Karnataka

Sunkad B.N. and Patil H.S.


  The present study deals with the composition and abundance of Rotifera in a tropical lake of Belgaum city. Rotifera (14 species) comprised dominant component of zooplankton of highly polluted lake. This group formed 52.38 and 54.6 percent of total zooplankton number during 1998 and 1999 respectively. Maximum population density was recorded during summer and minimum in monsoon in both the years of study period.

 Brachionus (four species) constituted dominant genus. This was followed by Keratella (two species), Filinia, Asplanchna, Polyarthra, Trichocera as sub-dominant genera. Other two genera Ascomorpha and Anuraepsis found in very low numbers in the lake. The possible reasons for their fluctuations in physico-chemical factors of the lake have been discussed.  

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