African Journal of
Environmental Science and Technology

  • Abbreviation: Afr. J. Environ. Sci. Technol.
  • Language: English
  • ISSN: 1996-0786
  • DOI: 10.5897/AJEST
  • Start Year: 2007
  • Published Articles: 1042

Full Length Research Paper

Spatio-temporal distribution of Naididae tubificids species and bio-evaluation of the quality of some surface water bodies of Yaoundé, Cameroon

Moussima Yaka Diane Armelle
  • Moussima Yaka Diane Armelle
  • Department of Animal Biology and Physiology, University of Yaoundé I, P. O. Box 812, Cameroon.
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Ajeagah Gideon Aghaindum
  • Ajeagah Gideon Aghaindum
  • Department of Animal Biology and Physiology, University of Yaoundé I, P. O. Box 812, Cameroon.
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Bilong Bilong Charles Félix
  • Bilong Bilong Charles Félix
  • Department of Animal Biology and Physiology, University of Yaoundé I, P. O. Box 812, Cameroon.
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  •  Received: 20 July 2021
  •  Accepted: 09 September 2021
  •  Published: 31 October 2021

Abstract

Despite their great interest for the integrated management of water resources, information on the ecology of aquatic oligochaetes is still sketchy in Cameroon. The present study aims at contributing to the knowledge on the distribution, microhabitat and life history of Naididae tubificids taxa in some eight water bodies of the city of Yaoundé. A total of 132 samples were analysed and the morphospecies Branchiura spp. and Limnodrilus spp. were identified. The most abundant species were Branchiura spp. with 2035 individuals versus 880 Limnodrilus spp. Both of them demonstrate low seasonal variations. It appeared that, these annelids are more abundant on clay-rich soils than on sand and the herbarium. Assessment of the organic pollution index indicates an organic pollution of the sampled waters ranging from moderate to high (3.67-2). The redundancy canonical analysis shows that Branchiura spp. are more present in saline waters revealing high organic pollution factors variables. During the study period, some 10 individuals of Limnodrilus spp. presented a shrunken tail. That reveals a strong environmental pressure due to the action of predators or the presence of heavy metals in the aquatic system evaluated. All these characteristics indicate a high pollution and predation pressure in the milieu.

 

Key words: Annelids oligochaete, ecology, bottom nature, polluted water.