Academic Staff Directory

Sidney Obidimma Nzeako PhD



Dr. Sidney Obidimma Nzeako graduated from the University of Nigeria Nssukka; B.Sc (Hons) Biology Education, 2003. In 2007 he obtained M.Sc Environmental Parasitology  and Ph.D Nematology, (2012) from the University of Port Harcourt. He is currently lecturing in the college of Natural and Applied Sciences, Faculty of Biological Sciences, Department of Animal and Environmental Biology, University of Port Harcourt


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1. Research on Pathogenicity of plant parasitic nematodes on economically important crops in Nigeria:

Nigeria as a developing country desperately needs food security and job creation to achieve its millennium development goals. It has been established that agriculture can play leading role. However, efforts by successive Governments have failed to actualise these objectives due to poor crop yields occasioned by plant pests such as plant parasitic nematodes that hamper positive returns on investments in this sector.

Objectives of this research are:

  • Screening of economically import crops to determine nematode species that affect them.
  • To development nematode resistant crop varieties.

On-going research:

  • Pathogenicity of Meloidogyne javanica on four varieties of Lycopersicum esculentum, in Nigeria.
  • Testing impacts of endoparasitic nematode Meloidogyne javanicaon on crop productivity, using tomato cultivar “Gboko” as a case study in Nigeria.

Application of stochastic production frontier model in crop production in the floodplain areas of Niger Delta, Nigeria. Niger Delta, Nigeria is characterized with high annual rainfall and is found around the coastal area of Nigeria. Most areas experience seasonal floods during the raining and become dry when the water recedes at the beginning of dry season. There are high activities of cropping in the low land within the Niger Delta region.


2. Biological Control of Nematode Infections

There is an increasing need to conserve the environment and minimize the use of chemicals that are not ecologically friendly in the agro allied industries. It is always advantageous to use environmentally friendly organisms to control plant and animal parasitic nematodes with rhizosphere dwelling bacterium and fungus. In this research, the bacterium;Pseudomonas flourescens and the fungus Arthrobotrys oligospora were used to biocontrol agents. 

Objectives of the research:

  • Evaluate the Biological control potentials of rhizosphere dwelling microorganisms;Pseudomonas flourescens and Arthrobotrys oligospora on nematodes of Plants and economically important animals
  • To extract these soil dwelling nematode antagonists for mass production.

On-going research:

Assessment of the biocontrol effect of Psuedomonas flourescens on Meloidogyne javanica infected tomato cultivars; Roma VF and UC83B.


3. Evaluation of environmental health status using Nematode Bionomics.

The Niger Delta is a region that has been extensively exploited due to the huge wealth of natural resources it is endowed with. This local and foreign interest in the region had led to the depletion of the environment. Most of the researches targeted at assessing the environmental health of the region had centred on the diversity of the micro fauna. The objective of the research is to assess the potentials of the ubiquitous nematode fauna in the determination of environmental health of the region.

  • To use nematode community composition to determine the health status of any environment.
  • The effect of crude oil pollution on nematode community composition.

On-going research

Effect of crude oil spillage on soil nematodes community composition in a polluted site in Gokana Local Government Area of Rivers State, Nigeria


4. General Parasitology

Health of humans and the animals his depends on for food  is very important productivity. This implies that understanding the organisms  that cause diseases in human and animal populations is a sure step towards maintaining a healthy environment.

Objectives of research in this area

  • Epedimiology of endemic parasitic infections in human population in the Niger Delta.
  • Epizootology of endemic diseases in livestock in the Niger Delta.

On-going research:

  • Prevalence of gastro-intestinal Helminthes in exotic and indigenous animals slaughtered in Port Harcourt, Nigeria
  • Anti-Parasitic Effects of Methanolic Extracts of Artemisia annua L. against Parasites of Sarotherodon melanotheron

5. Current status of malaria and urban schistosomiasis infections in the Mammy Market Free Zone of the     34 Field Artillery Brigade in Obinze, Owerri


6.  Prevalence of coccidiosis in free-range fowls in Obio-Akpor Local Government Area, Rivers State