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Abiotic factors influencing the diversity and abundance of protozoans at two different stations of Devika stream in Udhampur district, J&K, India

Author Affiliations

  • 1Department of Zoology, University of Jammu, Jammu-180006, India
  • 2Department of Zoology, University of Jammu, Jammu-180006, India
  • 3Department of Zoology, University of Jammu, Jammu-180006, India

Int. Res. J. Biological Sci., Volume 8, Issue (9), Pages 32-38, September,10 (2019)


Two different study sites of Devika stream were analysed for a period of one year (Oct, 2014 to Sept, 2015), in order to estimate the effect of various changing physico-chemical parameters on the diversity and abundance of inhabitant protozoans. During the present investigation, qualitatively, a total of 10 genera and 13 species viz. Centropyxis aculeata, C. ecornis, Paramecium aurelia, P. trichium, Vorticella sps., Epistylis plicatilis, Campanella umbellaria, Euplotes sps., Bursaridium schewakofii, Difflugia lebes, D. acuminata, Arcella vulgaris, Colpidium sps. were enlisted; out of which, only 6 genera showed their presence at Station II. Quantitative estimation revealed higher protozoan count at Station I (i.e:- 68.96%) than at station II. This may be attributed to the presence of comparatively higher levels of water temperature, free carbon-dioxide, sulphates, phosphates, nitrates, BOD as well as lower levels of DO at Station I. Furthermore, presence of some of the species like Epistylis plicatilis, Euplotes sps., Bursaridium schewakofii, Difflugia lebes and Arcella vulgaris at Station I infers to more anthropogenic influence at this station and also due to direct organic input. This organic load gets further diluted while travelling towards station II and seems less detrimental from the present data.


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