Effects of aqueous and dietary exposure of dieldrin on survival, growth and bioconcentration in mallard ducklings

Abstract

Tests were conducted to determine the effects of dieldrin in continuous flow water and in food on survival, growth, and bioconcentration in mallard ducklings (Anas platyrhynchos) Di eldrin had no effect on survival or growth at concentrations at or below water saturation (0 2 mg/L), but tissue (lipid, skin, liver, muscle, brain, blood) dieldrin concentrations increased rapidly (up to a mean of 217 μg/g) and bioconcentration factors (BCFs) showed up to 1,995 times (mean steady state lipid BCF of 1,345) more dieldrin in tissues than in the water Significant effects on survival, growth, and behavior were observed in ducks fed dieldrin spiked food, and tissues rapidly concentrated dieldrin up to five times more than those in the water‐only test (mean of 1,000 μg/g), although the BCFs were much lower (water BCFs were up to 18 times higher) The dietary 96 h LC50 value (50% death at 96 h) was 165 μg/g dieldrin, the 24‐d dietary LC50 was 29 5 μg/g The lowest 24 d LOAEL (lowest observed adverse effect level) and NOAEL (no observed adverse effect level) values were 16 4 and 0 3 μg/g, respectively, based on growth (total weight) A screening level wildlife criteria (SLWC) value of 0 0001 mg/L was derived by using data from this study Steady‐state tissue dieldrin concentrations at which growth impairment occurred were near 140 (lipid), 80 (skin), 20 (liver), 10 (brain), and 5 (muscle) μg/g dieldrin Tissue dieldrin concentrations where no growth impairment was observed were near 3 0 (lipid), 1 0 (skin), and <1 0 (liver, brain, and muscle) μg/g

Organochlorine pesticide contamination in three bird species of the Embalse La Florida water reservoir in the semiarid midwest of Argentina

“…The maximum concentrations of heptachlor epoxide for all adult birds (398.51 ng/g wet weight) and the great grebe egg (75.77 ng/g wet weight) were below those values reported (1500 ng/g wet weight) to adversely affect reproduction in the American kestrel, Falco sparverius (Henny et al, 1983;Henny et al, 1984). Methoxychlor, lindane and endosulfan contaminations were also under the concentrations reported to harm birds (WHO, 1984(WHO, , 1991Nebeker et al, 1992;Sang et al, 1999;Eroschenko et al, 2002;EXTOXNET, 2006).…”

Strong Adsorption of Dieldrin by Parent and Processed Montmorillonite Clays

“…Dieldrin is considered a persistent organic pollutant and has been shown to be toxic to humans and animals. Exposure to dieldrin has been associated with neurological, developmental, and carcinogenic effects in animal models (Nebeker et al 1992;Bachowski et al 1998;Richardson et al 2006). Dieldrin residues have been detected in adipose tissue of sheep, ducks, cows, and swine (Corrigan and Seneviratna 1990;Falandysz and Kannan 1992;and Petterson 1997).…”

Extra-pulmonary oxidative stress investigations of an over-the-counter pyrethroid insecticide product in rats

“…Misuse of pyrethroids insecticides could cause toxicity in non-target species (Cantalamessa, 1993). Insecticides exposure constitutes a source of potent hazard especially in children and animals (Eisler, 1989;Nebeker et al, 1992;Menegaux et al, 2006). The multipurpose insect killer used, a pyrethroid insecticide product, is a popular brand for the eradication of mosquito in households in Nigeria and in some cases, it is used daily in homes.…”