North-West University 2 articles published in JoVE Biology Collecting Marine Gnathiid Isopod Fish Parasites with Light Traps Mary O. Shodipo1, Ranelagh Yzabelle Lauguico1, Klaus M. Stiefel1,2, Paul C. Sikkel3,4 1Institute of Environmental and Marine Sciences, Silliman University, 2Neurolinx Research Institute, 3Department of Marine Biology and Ecology, Rosenstiel School of Marine Atmospheric and Earth Sciences, University of Miami, 4Water Research Group, Unit for Environmental Sciences and Management, North-West University We present a method to collect marine gnathiid isopod fish parasites using light traps placed at field sites via breath-hold diving or scuba diving. Environment Protocol for Acute and Chronic Ecotoxicity Testing of the Turquoise Killifish Nothobranchius furzeri Charlotte Philippe1,2, Arnout F. Gregoir1, Eli S. J. Thoré1, Gudrun De Boeck2, Luc Brendonck1,3, Tom Pinceel1,4 1Animal Ecology, Global Change and Sustainable Development, University of Leuven, 2Systemic Physiological and Ecotoxicological Research, University of Antwerp, 3Water Research Group, Unit for Environmental Sciences and Management, North-West University, 4Centre for Environmental Management, University of the Free State In this work, we describe an acute, chronic and multigenerational bioassay to study the effects of single and combined stressors on the Turquoise killifish Nothobranchius furzeri. This protocol is designed to study life-history traits (mortality, growth, fecundity, weight) and critical thermal maximum.