Effect of age and weight-specific respiration rate on toxicity of esfenvalerate pulse-exposure to the Australian crimson-spotted rainbow fish (Melanotaenia fluviatilis)

Sublethal toxicity of orchard stormwater runoff in Sacramento splittail (Pogonichthys macrolepidotus) larvae

“…Sublethal effects may play a more important role than acute mortality, but there is a lack of studies to identify and quantify sublethal responses to pesticides in splittail. In addition, although several studies have demonstrated the acute and chronic toxicity of two common dormant spray insecticides, diazinon and esfenvalerate, in other fish species (Barry, Logan, Van Dam, Ahokas, & Holdway, 1995;Goodman, Hansen, Coppage, Moore, & Matthews, 1979;Holdway et al, 1994;Scholz et al, 2000;Tanner & Knuth, 1996), little work has been done integrating acute toxicity with biomarkers of exposure. Sublethal exposure to insecticides is expected to cause a wide range of responses (biomarkers) ranging from genetic to reproductive anomalies.…”

Toxicity Testing of Crude Oil and Related Compounds Using Early Life Stages of the Crimson-Spotted Rainbowfish (Melanotaenia fluviatilis)

“…They are an ideal model test species for toxicity studies, as they can be reared in the laboratory. Rainbow"sh have been previously in toxicity testing (Holdway et al, 1994;Barry et al, 1995;Williams and Holdway, 2000), with newly hatched larvae being considered the most sensitive stage of the life cycle (Barry et al, 1995). The aims of this study were: (a) to measure the acute toxicity of embryonic rainbow"sh to the water-accommodated fraction of crude oil (WAF); (b) to compared acute toxicities of WAF, dispersants (Corexit 9527 and Corexit 9500), DCWAF (Corexit 9527 and Corexit 9500), and naphthalene to larval rainbow-"sh; (c) to compare naphthalene 96-h LC values of larvae collected from adult rainbow"sh exposed to one of untreated water, WAF, DCWAF (Corexit 9500), and naphthalene during their embryonic period.…”

The short-term effects of crude oil on the survival of different size-classes of cladoceran Daphnia magna (Straus, 1820)

“…Although it has been claimed that the metabolic rate decreases with age (Conceição et al, 1998;Fidhiany and Winckler, 1998), alternative evidence is likely to be available (Pérez-Camacho et al, 2000;Sukhotin et al, 2002). Thus, is possible that an elevated sensitivity of medium-sized cladocerans is due to increasing toxicity gained by an increasing metabolic rate at that life stage (Barry et al, 1995).…”