Acute toxicity of metals and reference toxicants to a freshwater ostracod, Cypris subglobosa Sowerby, 1840 and correlation to EC50 values of other test models

Khangarot, B. S.; Das, Sangita

doi:10.1016/j.jhazmat.2009.07.038

Cited by 67 publications

(31 citation statements)

References 39 publications

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“…Indeed, the LC 50 of Pb reported by Berthelot (2008) [8] was 579 mg Pb/kg dry soil in a sandy soil after 28 d exposure, which is higher than that obtained for Bi after 14 d in the present study (416 mg Bi/kg dry soil). Khangarot and Das [31] have also showed similar comparisons for freshwater ostracod Cypris subglobosa, the 48 h LC 50 were 37.08 and 40.19 mg/L for Bi (form Bi nitrate) and Pb, respectively. Furthermore, Bi is found to be more toxic to Tubifex tubifex species with a 96 h LC 50 = 0.662 mg de Bi/L [32].…”

Section: Figure 2 Deformation and Disconnection Observed On The Skinsupporting

confidence: 52%

Acute Toxicity of Bismuth to the Earthworm <i>Eisenia andrei</i>

Omouri¹,

Hawari²,

Fournier³

et al. 2017

IJEE

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Bismuth (Bi) is increasingly used in several industrial applications including the production of alloys, drugs, cosmetics and munitions formulations. However, little information is available on the environmental fate and ecotoxicological effects of Bi. The present study describes 14 days acute toxicity of Bi, added as Bi citrate to a natural sandy soil, to the adult earthworm Eisenia andrei. Total measured Bi concentrations were 298.0, 399.5, 431.0, and 469.5 mg Bi/kg dry soil. Data indicates that Bi was toxic to Eisenia andrei, as determined by LC 50 and LOEC, i.e., 416.0 and 399.5 mg Bi/kg dry soil, respectively. At 14 days in the presence of Eisenia andrei the bioaccessible fraction of Bi in soil, as determined in KNO 3 aqueous soil extracts, increased by a factor ranging from 1.6 to 30.0 compared to those measured at the beginning of experiment. Moreover, this study shows that an increase in pH caused by the presence of earthworm in soil was accompanied by increase in Bi bioaccessibility and consequently toxicity. For example, when Bi bioaccessibility increased from 0.262 to 7.516 mg Bi/kg dry soil, the mortality rate increased from 0 to 79%. Assuming that there were at least two routes by which Eisania andrei enhanced Bi bioaccessibility; one route was guided by the mobility, the biochemical (mucus) and the biological (bacteria) interactions of Eisenia andrei with soil constituents, and the other route was marked by the death of earthworms and the release of the accumulated Bi from the carcass.

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Section: Figure 2 Deformation and Disconnection Observed On The Skinsupporting

confidence: 52%

Acute Toxicity of Bismuth to the Earthworm <i>Eisenia andrei</i>

Omouri¹,

Hawari²,

Fournier³

et al. 2017

IJEE

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“…An additional bioassay test applied to Cypris subglobosa to measure the toxicity of 36 metals and 12 reference toxicants reveals that osmium was found to be the most toxic in the test while boron, the least toxic (Khangarot and Das 2009). Increasing concentrations of Cu and higher acidity in waters increase the mortality on populations of this species (Khangarot and Ray 1987).…”

Section: Heavy Metalsmentioning

confidence: 99%

Freshwater ostracods as environmental tracers

Muñoz

Abad

Bodergat

et al. 2013

Int. J. Environ. Sci. Technol.

149

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This paper revises the response of freshwater ostracods to different environmental conditions and anthropogenic impacts, with a worldwide overview of the potential use of these microcrustaceans as bioindicators and several examples of applications in different scenarios. The development of either a single species or an ostracod assemblage is influenced by physical-chemical properties of waters (salinity, temperature, pH, dissolved oxygen), hydraulic conditions, bottom grain sizes or sedimentation rates. In addition to population and community changes, morphological and geochemical changes can also be detected in the ostracod carapace, which serves as a tracer of the water quality. All these features permit to delimit the spatial effects of urban sewages, mining effluents, agricultural wastes, watershed deforestation or road building. These data are the basis for the palaeoenvironmental reconstruction of cores, with an interesting application to archaeology. In addition, favourable results of recently developed bioassays, coupled with an important variability of local assemblages under changing conditions in both waters and sediments, suggest that these microcrustaceans may included between the most promising sentinels groups in freshwater areas. These microcrustaceans show high sensitivity to pesticides, herbicides, heavy metal pollution and oil inputs.

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“…Khangarot and Das (2009) showed that the 48 h EC50 (immobilization) of Cu and Zn for Cypris subglobosa were 550 µgCu/L and 3,400 µgZn/L, respectively. In another study by Shuhaimi-Othman et al (2011), LC50 of Cu and Zn for Stenocypris major were 25.5 µgCu/L and 1,190 µgZn/L.…”

Section: Results and Discussion Effect Of Different Food On The Growtmentioning

confidence: 99%

Effect of Food and Light on the Sensitivity of Copper and Zinc to Freshwater Benthic Ostracod Heterocypris incongruens

Sevilla

Nakajima

Yamamoto

2013

J. of Wat. ^|^ Envir. Tech.

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Freshwater green algae Scenedesmus acutus and ostracod Heterocypris incongruens were used to evaluate sediment toxicity. They were exposed to a series of copper and zinc concentrations for 6 days. Effects of different food (algae and TetraMin ® ) and modifications of photoperiod in the toxicity test were also determined. TetraMin ® met the validity criteria, though it cannot be a complete substitute of algal food in the toxicity test. Modification of photoperiod has significant influenced on the ostracod toxicity test. The median lethal concentrations (LC50) of copper when fed with TetraMin ® were 270 µgCu/L and 571 µgCu/L under 24-h dark and light/dark conditions, respectively. Almost no significant effect on ostracod sensitivity to zinc when exposed under light (470 to 423 µgZn/L). On the other hand, light condition has similar effects on ostracod sensitivity to copper and zinc when fed with S. acutus. The preliminary results of the ostracod toxicity tests seem to show complex phenomena of multi exposure pathways and further investigation of the interrelationship between ostracod and food organisms is necessary.

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Acute toxicity of metals and reference toxicants to a freshwater ostracod, Cypris subglobosa Sowerby, 1840 and correlation to EC50 values of other test models

Cited by 67 publications

References 39 publications

Acute Toxicity of Bismuth to the Earthworm <i>Eisenia andrei</i>

Acute Toxicity of Bismuth to the Earthworm <i>Eisenia andrei</i>

Freshwater ostracods as environmental tracers

Effect of Food and Light on the Sensitivity of Copper and Zinc to Freshwater Benthic Ostracod Heterocypris incongruens

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Acute toxicity of metals and reference toxicants to a freshwater ostracod, Cypris subglobosa Sowerby, 1840 and correlation to EC50 values of other test models

Cited by 67 publications

References 39 publications

Acute Toxicity of Bismuth to the Earthworm &lt;i&gt;Eisenia andrei&lt;/i&gt;

Acute Toxicity of Bismuth to the Earthworm &lt;i&gt;Eisenia andrei&lt;/i&gt;

Freshwater ostracods as environmental tracers

Effect of Food and Light on the Sensitivity of Copper and Zinc to Freshwater Benthic Ostracod Heterocypris incongruens

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Product

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Acute Toxicity of Bismuth to the Earthworm <i>Eisenia andrei</i>

Acute Toxicity of Bismuth to the Earthworm <i>Eisenia andrei</i>