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Metal Mixtures Toxicity And Bioaccumulation In Tilapia Nilotica At 96-Hr Lc50 Exposure, Faiza Ambreen, Muhammad Javed
Metal Mixtures Toxicity And Bioaccumulation In Tilapia Nilotica At 96-Hr Lc50 Exposure, Faiza Ambreen, Muhammad Javed
Journal of Bioresource Management
Laboratory tests were conducted on fingerlings of Tilapia nilotica to check the bioaccumulation patterns of lead (Pb), cadmium (Cd) and cobalt (Co) during acute toxicity at constant water temperature, pH and total hardness. Metal mixtures viz. Lead + Cadmium, Cobalt-Lead and Cadmium-Cobalt were selected to assess the acute toxicity in terms of 96-hr LC50 along with bioaccumulation patterns in selected organs of Tilapia nilotica (skin, muscles and liver). Sensitivity of Tilapia nilotica in terms of 96-hr LC50 for all mixtures varied significantly. The 96-hr LC50 of binary metal mixtures agreed in that order: cadmium-cobalt > lead-cadmium > cobalt-lead with statistically significant differences …
Determination Of Acute Toxicity Of Copper And Cobalt For Tilapia Nilotica, Asif Naseem Rai, Asmat Ullah, Jibran Haider
Determination Of Acute Toxicity Of Copper And Cobalt For Tilapia Nilotica, Asif Naseem Rai, Asmat Ullah, Jibran Haider
Journal of Bioresource Management
During the present investigation, the 96-hr LC50 and lethal concentrations of copper and cobalt for Tilapia nilotica were determined under controlled laboratory conditions at constant pH (7.25), total hardness (255 mgL-1) and temperature (30 °C). During acute toxicity studies, the physico-chemical parameters of water viz. temperature, pH, dissolved oxygen, electrical conductivity, carbon dioxide, total ammonia, calcium, sodium, magnesium, potassium and total hardness were monitored at 12-hr intervals for each test. Fish were exposed to different concentrations of copper and cobalt, separately, starting from zero with an increment of 0.05 and 0.5 mgL-1. After 96-hr exposure of various concentrations of each …