Behavior surveillance and oxygen consumption in the freshwater fish Labeo rohita (Hamilton) exposed to sodium cyanide

Abstract

Sodium cyanide, is highly contaminating aquatic ecosystems as a toxic pollutant, was investigated in the present study for acute toxicity on freshwater fish Labeo rohita. The toxicity tests were conducted by static renewal bioassay method on the juveniles of fish was evaluated. The LC 50 value of sodium cyanide to Labeo rohita was found out to be 320 µg l-1. One third (106 µg l-1) and one fifth (64 µg l-1) of the LC 50 value was selected for sublethal studies. Behavioural patterns and oxygen consumption were observed in both (1/3 rd and 1/5 th) sublethal concentrations (1, 5, 10 and 15 days). Sodium cyanide is highly toxic to the animal tested. Fish behaved irregular, erratic, and dartic movements, by followed hyperexcitability, loss of balance, finally settles to the bottom of the test chamber. A decrease in oxygen consumption was observed in 1/3rd (11.62% and-4.52%) and 1/5 th (9.11% and-2.82%) sublethal concentrations. Fish under sublethal concentration were found to be under stress but not fatal.

Malathion Toxicity: Effect on Some Metabolic Activitiesin Oreochromis Niloticus, the Tilapia Fish

“…The data shows that the rate of oxygen consumption was declined all over the exposure periods. Several authors [27] reported that the disturbance in oxidative metabolism leads alteration in completely animal oxygen consumption in different species of fish exposed to pesticides. Total oxygen consumption is one of the indicators of the general health of the fish.…”

“…Respiratory activity of a fish is often the first physiological response to be affected by the presence of contaminants in the aquatic environment. Although many biological early warning systems monitor abnormal opercular movement as an indicator of respiratory stress, a more direct measurement of stress in this sense necessitates the quantification of oxygen consumed by the fish [27].…”

Toxicity effect of expired pesticides to freshwater fish, Labeo rohita

“…Labeo rohita is a prime cultured and important staple freshwater fish generally found in rivers, ponds, and reservoirs (Dube and Hosetti, 2010) and popular in Thailand, Bangladesh, northern India and Pakistan (Rainer et al, 2005). Hence, we investigated the effect of certain expired pesticides to Labeo rohita in acute exposure test.…”

Toxicity Assessment of Phosphonium Based Ionic Liquids Towards Female Guppy Fish

“…Among the neoteric solvents applicable in green technologies, ILs have garnered increasing attention over the others due to their numerous applications in recent years. In general, the toxicity of chemicals can be measured using (a) mammalian acute toxicity test (b) bacteria acute toxicity test (c) fish acute toxicity test and (d) biological dissociation test (Ardali, 1990;Dube and Hosetti, 2010). The aquatic toxicity assessment is the study of the effects of the chemicals and other anthropogenic and natural materials and activities on aquatic organisms at various levels of organization and ecosystems.…”