“…Baird et al (2007a) review the selection of test organisms and measurement endpoints for in situ assays and provide a framework for linking effects at different levels of biological organization, using G. pulex as an example. The most widely used endpoint is feeding rate, which has been employed to investigate the toxicity of farm waste (Veerasingham and Crane, 1992), pesticide spray drift (Maltby and Hills, 2008), municipal wastewaters (Maltby et al, 2002;Bundschuh et al, 2011), coal mine effluents (Maltby et al, 2002), industrial effluents (Maltby et al, 2002), and landfill leachates (Bloor and Banks, 2006), among others. The most widely used endpoint is feeding rate, which has been employed to investigate the toxicity of farm waste (Veerasingham and Crane, 1992), pesticide spray drift (Maltby and Hills, 2008), municipal wastewaters (Maltby et al, 2002;Bundschuh et al, 2011), coal mine effluents (Maltby et al, 2002), industrial effluents (Maltby et al, 2002), and landfill leachates (Bloor and Banks, 2006), among others.…”