Health status of the rainbow trout of the Chalhuanca river
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Abstract
The impact of human pollution on ecosystems is a critical issue. The Chalhuanca River is an important body of water, used for rainbow trout aquaculture, however, it has also been affected by the disposal of wastewater from surrounding cities. Fish deaths have been recorded in the last 10 years and it was decided to evaluate the health status and bactericidal capacity of rainbow trout in the Chalhuanca River. A stratified sample of 36 fish was taken at three different points according to a specific formula. Parameters such as condition factor, hemoglobin, hematocrit, red blood cell count, mean corpuscular volume, mean corpuscular hemoglobin, hemoglobin and cortisol concentration were evaluated. In addition, bactericidal capacity tests were carried out against the E. coli strain. The evaluation of these hematological variables reflected an anemic state and chronic stress in the rainbow trout. In conclusion, human contamination has negatively affected the health of rainbow trout in the Chalhuanca River.
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