Oxygen consumption inDaphnia pulex exposed to 2,4-D or 2,4,5-T

Sigmon, Catherine F.

doi:10.1007/bf01685511

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…No significant differences in any of the chemical treatments were seen when compared to the control respiration rate ofO.lO J.!L oxygen/Daphnia/day (Geiger and Buikema, 1981). Sigmon (1979) also found that exposure to concentrations of 1 and 3 ppm of the pesticide 2,4 -D had no effect on overall oxygen consumption, which was measured continuously by a respirometer over a 9 hour exposure period.…”

Section: Respiration and Past Respiration Bioassaysmentioning

confidence: 75%

“…Similar increases in respiration rates of daphnids have been seen in response to other chemical contaminants commonly found in aquatic systems. Sigmon (1979) noted a significant increase in oxygen consumption in daphnids exposed to 1 and 3 ppm of the pesticides 2,4-D and 2,4,5-T over a period of 9 hours exposure. A significant increase in respiration in Daphnia magna has also been seen in response to concentrations of cadmium greater than 5 ppb and concentrations of 3,4-dichloroaniline (DCA) greater than 50 ppb after 48 hours of exposure (Barber et al, 1990).…”

Section: Daphnia Magna Respirationmentioning

confidence: 91%

“…When exposed to 1 and 3 ppm of the pesticide 2,4,5-T, Daphnia pulex showed a significant decrease in oxygen consumption in the 1 ppm treatments and a significant increase in the 3 ppm treatments (Sigmon, 1979). A study exploring the effects of UV radiation on oxygen consumption in Daphnia catawba found that there was there was a significant increase (31.8%) in oxygen consumption when test organisms were exposed to 2.08 kJ UVB radiation for 12 hours (Fischer eta/., 2006).…”

Section: Respiration and Past Respiration Bioassaysmentioning

confidence: 95%

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Assessing behavioural and physiological responses of three aquatic invertebrates to tributyltin and atrazine in a multi-species, early warning biomonitoring technology

Marshall¹

2021

Preprint

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Recent global events and anthropogenic changes to the natural environment have raised concerns about the quality of drinking water consumed by the public throughout the world. Traditional chemical testing is slow and is not performed for all possible contaminants, necessitating the development of innovative new technology to detect and mitigate threats to human health. The development of a multi-species, early-warning biomonitoring technology, based on behavioural and physiological changes in aquatic organisms, greatly furthers this goal. In this study, changes in movement behaviour and respiration rates were examined in three aquatic species, Daphnia magna, Hyalella azteca and Lumbriculus variegates, exposed to varying concentrations of TBT and atrazine, using digital video analysis and direct oxygen measurement. Different parameters of movement were examined and evaluated for inclusion in a multi-species, early-warning biomonitoring technology and the utility of incorporating these parameters into a model to determine classes and concentrations of various contaminants is discussed. An evaluation of whether or not direct measurement of oxygen consumption rates is feasible and useful for inclusion in a multi-species, early-warning biomonitoring technology is also discussed.

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Section: Respiration and Past Respiration Bioassaysmentioning

confidence: 75%

Section: Daphnia Magna Respirationmentioning

confidence: 91%

Section: Respiration and Past Respiration Bioassaysmentioning

confidence: 95%

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Assessing behavioural and physiological responses of three aquatic invertebrates to tributyltin and atrazine in a multi-species, early warning biomonitoring technology

Marshall¹

2021

Preprint

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Differences in acute toxicity test results of three reference toxicants on Daphnia at two temperatures

Lewis

Horning

1991

Enviro Toxic and Chemistry

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Ten 48‐h static acute toxicity tests were conducted with Daphnia magna Straus and Daphnia pulex Leydig with each of the three reference toxicants — sodium dodecyl sulfate (SDS), sodium pentachlorophenate (NaPCP), and cadmium (Cd) (as CdCl2) — at 20 and 26°C to investigate the effect of temperature on test results at the temperature extremes usually encountered during field studies. The mean 48‐h LC50 value for SDS with Daphnia pulex at 26°C was lower (10.2 mg/L) than at 20°C (12.6 mg/L), but the difference was not significant (α = 0.05). For Daphnia magna the mean LC50 was significantly (α = 0.05) lower at 26°C (10.8 mg/L) than at 20°C (13.5 mg/L). Sensitivity of either species to NaPCP was not significantly different (α = 0.05) at the two temperatures. The data show a fourfold increase in sensitivity to Cd at the higher temperature with Daphnia magna (mean LC50 = 0.038 mg/L at 20°C and 0.009 mg/L at 26°C) and a sevenfold increase with Daphnia pulex (mean LC50 = 0.042 mg/L at 20°C and 0.006 mg/L at 26°C). These data indicate that toxicity tests conducted at 20 and 26°C may give significantly different results with Daphnia. Because test precision, control survival, and the likelihood of obtaining valid tests are better at 20°C, that temperature is recommended for acute toxicity tests with Daphnia.

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Effects of naphthalene on the hemoglobin concentration and oxygen uptake ofDaphnia magna

Wilhm

1982

Bull. Environ. Contam. Toxicol.

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Oxygen consumption inDaphnia pulex exposed to 2,4-D or 2,4,5-T

Cited by 6 publications

References 3 publications

Assessing behavioural and physiological responses of three aquatic invertebrates to tributyltin and atrazine in a multi-species, early warning biomonitoring technology

Assessing behavioural and physiological responses of three aquatic invertebrates to tributyltin and atrazine in a multi-species, early warning biomonitoring technology

Differences in acute toxicity test results of three reference toxicants on Daphnia at two temperatures

Effects of naphthalene on the hemoglobin concentration and oxygen uptake ofDaphnia magna

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