Raw data FigShare.xls

Most of the research report on the toxicity of glyphosate using the formulation instead of the pure or technical grade glyphosate. However, the low solubility and strong soil sorption capacity of the surfactants means that the highly soluble glyphosate would be the major component of soil runoffs from agricultural areas and impacting aquatic organisms especially to fish. In this study, crossbred red tilapia were exposed to different concentrations of technical grade glyphosate herbicide (25 to 150 mg/L) over a period of 49 days under laboratory condition. Changes in growth performance were evaluated through morphometric measurements. The changes in somatic indices of the fish were determined using the hepato-somatic index (HSI) and gonado-somatic index (GSI) of the fish. The results indicate that of the body mass indices, length and weight, the latter is a more sensitive parameter whilst condition factor is not a sensitive parameter. Other parameters tested such as food conversion ratio, specific growth rate, HIS and GSI are sensitive parameters but bodyweight index is the most sensitive toxicity parameter where a reduction in body weight was significantly found at 25 mg/L of glyphosate. In summary, the outcomes of the present work indicated that red tilapia is an excellent species for the ecotoxicological study of technical grade glyphosate herbicide.