Effects of Dimethoate on Some Haematological Parameters in Heterobranchus longifilis in the Laboratory

The natural environment is polluted with various types of anthropogenic contaminants majorly from domestic, industrial and agricultural activities [1]. In recent years, the widespread use of agrochemicals to meet the agricultural demand of food production for the populace is expected. This has led to intensive and indiscriminate use of these agrochemicals, which results in the contamination of the aquatic ecosystems [2]. Consequent of continuous and arbitrary use of various types of pesticides in the field, water bodies are incessantly getting contaminated on a regular basis through run offs [3]. Aquatic pollution consequent of pesticides applications has become a critical issue especially in the developing nations of the world. Direct or indirect pollution of water by pesticides can lead to fish death, and reduction in fish population and productivity in the aquatic environment [4]. Apart from the instant warnings of mortality that may be obvious in the event of water pollution in cases of acute toxicity, however, organisms are subjected to long term effects consequent of chronic exposure which may also prove to be fatal to the organism or as toxicants to the final consumers of such organism [5, 6].