Seasonal variations of the effect of temperature on lethal and sublethal toxicities of ammonia for three common freshwater shredders

► Laboratory experiment of the combined effect of ammonia and temperature. ► Survival and oxygen consumption rates at different seasons. ► Strong between-species variation in the response of shredders. ► Highest ammonia tolerance for temperature similar to that of the sampling date. ► Predominant effect of thermal stress for high temperatures.