Evaluation of pond water after the culture of ostracods (Heterocypris incongruens): associating toxicity with risk assessment
Journal Title: Journal of Research in Ecology - Year 2018, Vol 6, Issue 1
Abstract
Protections of aquatic lives from pollution associated hazard are critical to the sustenance of fish pond ecosystem. To determine whether valuable substances such as pond water can pose unacceptable level of risk to fish is the purpose of this investigation. Research has shown that the adverse outcomes of life threatening conditions originate from micro-level events. The use of whole organisms was an alternative approach to integrate and understand the biological substances that can cause toxicity to aquatic organisms. In this research, In vivo Early Life Stage (ELS) testing was conducted on the whole organism in the pond water prior to the independent feeding of ostracod (Heterocypris incongruens). The growth inhibition was also studied to effectively monitor the onset of toxic metabolites in the stationary fish pond. For sampling purpose, fish pond water was collected for five different days after the replacement of old water. It was noted that no further serial dilution was done as the number of days were adopted as dilution one to dilution five. The fish pond has the dimensions of 10×8×7 m, containing 500 liters of water and 200 fish. Fish pond water samples collected from days 1–4 showed average mortality 42 – 47%, while day 5 showed 77% ostracods mortality rate. These results suggested that the onset of fish pond water toxicity starts from day 2 – 5. This implied that toxic metabolites in fish pond water at day five and over can progressively impaired the proper growth and development of fish and other lower organisms
Authors and Affiliations
Victor Nnamdi Ude, Victor Eshuc Okpashi, Agnes Edet Asuquo Offiong, Ikechukwu NE Onwurah
Keywords
Related Articles
- EP ID EP558570
- DOI -
- Views 117
- Downloads 0
The impact of arbuscular mycorrhizal colonization on soil diversity indices of dill and common bean under different cropping systems
The purpose of this work was to compare the effects of Funneliformis mosseae and cropping system on soil bacterial and fungal diversity indices of dill (Anethum graveolens L.) and common bean (Phaseolus vulgaris L.), gro...
Comparison of EPM and Geomorphology models for erosion and sediment yield assessment in a semi-arid environment
In the present study, erosion and sedimentation are estimated by the two qualitative (Geomorphology) and quantitative (EPM) methods; the results in Dehbala watershed in Yazd, Iran, were compared with that of observed sta...
The effect of different levels of dried distillers wheat grain with solubles on milk composition, blood parameters and concentration of liver enzymes in holstein cows during the transitional period
In order to evaluate the effect of different levels of wheat Dried Distillers Grain with Solubles (DDGS) on milk composition, blood parameters and concentration of liver enzymes in dairy cows during the transitional peri...
Foliar application of humic acid, it's components and effect on grain yield in Sorghum
A field experiment was conducted at the experimental fields in the College of Agriculture, University of Baghdad during spring and autumn seasons of 2016 to study the effect of humic acid concentrations (0, 1, 2 and 3 cm...
Efficiency of immobilization technique for Azotobacter chroococcum and its effect on the growth and yield of wheat Triticum aestivum L.
Two local isolates of Azotobacter chroococcum, were used to study its nitrogen fixation one of which was isolated and identified in the Microbiology Laboratory of the Faculty of Agriculture, Al-Muthanna University. It wa...