Effects of Dimethoate on Condition Factor and Organosomatic Indices of Heterobranchus Longifilis (Valenciennes, 1840)

In recent times, pollution has been a most important threat to the sustainability of aquatic environment [1]. The use of chemicals in various agriculture operations have been on the increase especially on the developing countries across the globe [2]. Pesticides can be described as substances that are used for controlling pest in homes and agricultural field. In the recent times, pesticides use is on the increasing trend. As such, pesticides are among the important pollutants of the aquatic ecosystem [3]. Conversely, Gabriel et al. [4] reported that chemicals such as pesticides are among the most potentially harmful chemicals introduced into the aquatic environment through various human activities. Several collections of these pesticides are lethal to the non-targeted organisms especially fish in the aquatic environment [5]. The degree of toxicity of these chemicals depends largely on their compositions, rate and mode of application and as well as the immune system and other metabolic pathways of the target organisms. Apart from these, agrochemicals can also be classified based on target organisms. Classification based on targets organisms includes insecticides, rodenticides, herbicides and fumigants [6, 7].