Locomotor activity of the bluegill Lepomis macrochirus: hyperactivity induced by sublethal concentrations of cadmium, chromium and zinc

Abstract

A quantitative description of the effects of sublethal concentrations of cadmium, chromium and zinc on the swimming activities of the bluegill is presented. Locomotor activities of fish in 0.1 and 0-25 mg 1-l cadmium are respectively 1.5 and 7.8 times the activities of control fish. Fish in 0 5 rng 1 -l cadmium, a concentration killing 30% in two weeks, were less active than controls. Fish in 0.05, 2.4 and 24.0 mg 1 chromium were respectively 1.2,3*6 and 6.5 times as active as controls. Fish in 0.1 and 5.0 mg 1-' zinc were respectively 1.3 and 3.8 times as active as controls. Thus metals effect hyperactive locomotor responses by the bluegill in a concentration-dependent relationship.

Use of Behavioral Responses of Rainbow Trout Oncorhynchus mykiss in Identifying Sublethal Exposure to Hexavalent Chromium

“…(Svecevičius 2007). NOEC = 0.0015 and LOEC = 0.003 of mg Cr/L, respectively Ellgaard et al (1978) using an observational technique have found hyperactivity in bluegill (Lepomis macrochirus) at sublethal Cr 6? concentrations of 0.05-24 mg/L (22 ± 1°C, pH = 6.5, hardness = 105 mg/L, alkalinity = 11 mg/L as CaCO 3 ).…”

“…Only a few studies are devoted to fish behavior effects due to Cr 6? exposure (see Ellgaard et al 1978; Van der Putte et al 1982;Anestis and Neufeld 1986;Gendusa and Beitinger 1992;Svecevičius 2007).…”

Differential effect of chromium compounds on the immune response of the African mouth breeder Oreochromis mossambicus (Peters)

“…A general toxic e#ect of chromium on fishes has previously been reported (Ellagard et al, 1978;Pickering, 1980;Sastry & Sunita, 1982;Chellapa, 1988) as well as the e#ects on *Corresponding author. E-mail: zooamcol@md3.vsnl.net.in the immune system of fish (Strik et al, 1975;Sugatt, 1978).…”

Effects of sublethal exposure to copper on diel activity of sea catfish, Arius felis

“…Drummond, 1973;Bengtsson, 1974;Ellgaard et al, 1978;Scarfe et al, 1982;Steele, 1985a). Because of the special ecological significance of die1 rhythms (Aschoff, 1964) and because altered locomotor behavior is often the first indication of pohutant-induced stress, a greater understanding of the impact of pollution of natural aquatic systems on ecological processes could be derived from evaluating die1 locomotor responses of aquatic animals to pollutants (e.g.…”