Effects of temperature and chemical formulation on the acute toxicity of pentachlorophenol to<i>Simocephalus vetulus</i>(Schoedler, 1858) (Crustacea: Cladocera)

Willis, Kate; Ling, Nicholas; Chapman, Mark A.

doi:10.1080/00288330.1995.9516662

Cited by 15 publications

(13 citation statements)

References 18 publications

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“…Therefore, it could also be suggested to avoid the use of S. mixtus neonates produced in the last clutches of the life cycle as test organisms. Although this cladoceran has not been used as test organism in toxicological assessments, the present results confirm the potential of S. mixtus as test organism due to its large size, relative ease to be cultured in the laboratory, low variability in its toxic response, and high sensitivity; similar results have been reported previously by Willis et al [38] for its sibling species, S. vetulus.…”

Section: Comparative Sensitivity Among Speciessupporting

confidence: 92%

Evaluation of the sensitivity of three cladoceran species widely distributed in Mexico to three reference toxicants

Martínez‐Jerónimo

Muñoz-Mejía

2007

Journal of Environmental Science and Health, Part A

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Acute toxicity effects of sodium dodecyl sulfate (SDS), sodium pentachlorophenate (SPCP), and hexavalent chromium (Cr(VI)) were determined in Ceriodaphnia dubia, Daphnia pulex, and Simocephalus mixtus. Neonates were obtained from parthenogenetic females of different ages to establish the relative sensitivity of these species, in order to propose them as test organisms in the Mexican environmental standards. For C. dubia the average LC(50) (48 h) values were 8.59 +/- 1.08, 0.92 +/- 0.16, and 0.23 +/- 0.04; for D. pulex, 5.34 +/- 0.90, 1.49 +/- 0.29, and 0.28 +/- 0.06; whereas for S. mixtus, they were 4.50 +/- 0.41, 1.31 +/- 0.16, and 0.12 +/- 0.03 mg/L for SDS, SPCP, and Cr(VI), respectively. SDS and SPCP acute toxicity results depicted coefficients of variation of

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Section: Comparative Sensitivity Among Speciessupporting

confidence: 92%

Evaluation of the sensitivity of three cladoceran species widely distributed in Mexico to three reference toxicants

Martínez‐Jerónimo

Muñoz-Mejía

2007

Journal of Environmental Science and Health, Part A

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“…Simocephalus vetulus (Cladocera, Daphniidae) is a freshwater cladoceran species common in shallow forest ponds. It is broadly distributed throughout subtropical and temperate regions and has been used in numerous population and toxicity studies [34]. The amphibian R. pipiens (Anura, Ranidae) also has a broad distribution in forest ponds and wetlands throughout North America.…”

Section: Methodsmentioning

confidence: 99%

Multiple stress effects of Vision® herbicide, pH, and food on zooplankton and larval amphibian species from forest wetlands

Chen

Hathaway²,

Folt

2004

Enviro Toxic and Chemistry

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As part of a multiple-tier research program, interactions of the herbicide Vision (glyphosate) with two stressors, pH and food level, were examined. Effects of the formulated product Vision were tested at two test concentrations (0.75 and 1.50 mg acid equivalent/L), two pH levels (pH 5.5 and 7.5), and under high and low food concentrations. Effects of each stressor alone and in combination were examined using two common wetland taxa: Zooplankton, Simocephalus vetulus, and tadpoles (Gosner stage 25) of Rana pipiens. For S. vetulus, survival, reproduction, and development time were measured; survival was measured for R. pipiens. For both species, significant effects of the herbicide were measured at concentrations lower than the calculated worst-case value for the expected environmental concentration ([EEC], 1.40 mg acid equivalent/L). Moreover, high pH (7.5) increased the toxic effects of the herbicide on all response variables for both species even though it improved reproductive rate of S. vetulus over pH 5.5 in the absence of herbicide. Stress due to low food alone also interacted with pH 5.5 to diminish S. vetulus survival. These results support the general postulate that multiple stress interactions may exacerbate chemical effects on aquatic biota in natural systems.

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“…On the basis of the metabolic principle (Q 10 ), it has been hypothesized that tropical aquatic species should be more sensitive to toxic chemicals than their temperate counterparts (Castillo et al 1997). Previous laboratory studies suggested that the risk of toxicity to an aquatic organism appears to increase with temperature (Sprague 1985;Viswanathan and Murti 1989;Brecken-Folse et al 1994;Willis et al 1995;Lydy et al 1999;Kwok and Leung 2005). In general, the solubility of the toxicant in water and the rates of uptake and circulation in the test organism are higher at elevated temperatures.…”

Section: Temperature-biota Interactionsmentioning

confidence: 99%

Comparison of Tropical and Temperate Freshwater Animal Species' Acute Sensitivities to Chemicals: Implications for Deriving Safe Extrapolation Factors

Kwok

Leung

Lui

et al. 2007

Integr Environ Assess Manag

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Toxicity data for tropical species are often lacking for ecological risk assessment. Consequently, tropical and subtropical countries use water quality criteria (WQC) derived from temperate species (e.g., United States, Canada, or Europe) to assess ecological risks in their aquatic systems, leaving an unknown margin of uncertainty. To address this issue, we use species sensitivity distributions of freshwater animal species to determine whether temperate datasets are adequately protective of tropical species assemblages for 18 chemical substances. The results indicate that the relative sensitivities of tropical and temperate species are noticeably different for some of these chemicals. For most metals, temperate species tend to be more sensitive than their tropical counterparts. However, for un-ionized ammonia, phenol, and some pesticides (e.g., chlorpyrifos), tropical species are probably more sensitive. On the basis of the results from objective comparisons of the ratio between temperate and tropical hazardous concentration values for 10% of species, or the 90% protection level, we recommend that an extrapolation factor of 10 should be applied when such surrogate temperate WQCs are used for tropical or subtropical regions and a priori knowledge on the sensitivity of tropical species is very limited or not available.

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Effects of temperature and chemical formulation on the acute toxicity of pentachlorophenol toSimocephalus vetulus(Schoedler, 1858) (Crustacea: Cladocera)

Cited by 15 publications

References 18 publications

Evaluation of the sensitivity of three cladoceran species widely distributed in Mexico to three reference toxicants

Evaluation of the sensitivity of three cladoceran species widely distributed in Mexico to three reference toxicants

Multiple stress effects of Vision® herbicide, pH, and food on zooplankton and larval amphibian species from forest wetlands

Comparison of Tropical and Temperate Freshwater Animal Species' Acute Sensitivities to Chemicals: Implications for Deriving Safe Extrapolation Factors

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