9 research outputs found
The acute toxicity of copper to Gammarus fasciatus say, a freshwater amphipod
Gammarus fasclatus could, and possible should, be used as the experimental organism in conjunction with other organisms being used in laboratory bioassays.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/47981/1/128_2005_Article_BF01685414.pd
Mortality patterns in trout (Salmo trutta and S. gairdneri) exposed to an anionic detergent in relation to concentration and mechanisms of toxic action
Environmental Reviews and Case Studies: A Review of Environmental Characteristics and Effects of Dez Dam Flushing Operation on Downstream
The effects of formalin, malachite green and suspended solids on the respiratory activity of rainbow trout, Salmo gairdneri Richardson
Toxicity of methylmercury and copper, applied singly and jointly, to the blue gourami,Trichogaster trichopterus
Fish mortality due to acute ammonia exposure
Abstract. Fish mortality in the River Umia, near Villagarcia de Arosa, Pontevedra, Spain, which occurred after a discharge from a food sewage works, is studied. Physicoâchemical parameters of water samples from sewage and from the River Umia were studied and concentrations of ammonia sufficiently high to cause toxic effects in fish (702 mg/1 and 302 mg/1 as total ammonia) were found. The toxicity of two concentrations of ammonia was investigated on goldfish, Carassius auratus (L.), using water quality values the same as found in the River Umia, to obtain the same concentrations of unâionized ammonia (2·13 mg/1 and 0·91 mg/1). Fish exposed to high concentrations died within 24 h and three of six, which were exposed to the lowest concentration died within 96h. All fish at first showed symptoms of hyper excitability and hyperventilation, and at times of rest showed a decrease in respiration. Postâmortem findings generally included gill congestion and haemorrhage. Copyright © 1987, Wiley Blackwell. All rights reserve