Effect of Different Cu Levels on Growth of Earthworm, Eisenia fetida in a Calcareous Soil

Haghparast, Raheleh Jenabi; Golchin, Ahmad; Kahneh, Ehsan

doi:10.14233/ajchem.2013.13689

Cited by 5 publications

(5 citation statements)

References 10 publications

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“…Impact can vary due to the different contact times during which the earthworm exposed to contaminants (Haghparast;2013;Golchin et al, 2013). Concentration of the metals in the body of earthworms can reach the toxic level if the contact time of earthworm is a prolonged duration (Hagparast et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

“…Irizar et al (2015) concluded during their study that, if the organic material in the soil is low, earthworms are not able to digest the soil and, as a result, the toxicity of cadmium increases in them, and the mortality and disorder in reproduction rise. Haghparast et al (2013) showed that organic material is a source of energy for Eisnia Fetida earthworms and increases the percentage of their survival. Avila et al (2009) showed that adding 5% of organic matter to soil contaminated with chromium at a concentration of 0.06 mg/g after 21 days gave no bioremediation, but after 42 days the efficiency of bioremediation (18.33%) increased.…”

Section: Discussionmentioning

confidence: 99%

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Negative Effect of Phosphogypsum Over Physiological Activity of Earthworm Eisenia Fetida

Behera¹,

Patnaik²

2018

Appl. Ecol. Env. Res.

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The study aimed to assess the genuine impact of phosphogypsum on the growth, feeding, respiration and regeneration of earthworm Eisenia fetida. In laboratory condition the earthworms were cultured under 0% (control), 4%, 8% and 10% concentration of phosphogypsum for 30 days. After completion of every 10 day changes in the above parameters were observed to track the impact of phosphogypsum. With increasing exposure duration and concentration of phosphogypsum lower growth rate, declined feeding habit, maximum respiration rate and deprived regeneration power were noticed. The highest and lowest growths were 1.39 gm at 0% and 0.05 gm at 10%, respectively. Maximum feeding rate was 32.65 with a minimum rate 16.20 g g -1 live tissue. Respiration rate was highest at 10% i.e. 0.0578 g -1 live worm tissue hr -1 kg -1 soil, as most of the energy used to respire to sustain in such diverse condition and 0.575 g -1 live worm tissue hr -1 kg -1 soil recorded as lowest in 0%. The rate of regeneration was deeply hampered and there was no viable worms left at 8% and 10% concentration to assess. Regeneration was only observed at 0% and 4%.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Negative Effect of Phosphogypsum Over Physiological Activity of Earthworm Eisenia Fetida

Behera¹,

Patnaik²

2018

Appl. Ecol. Env. Res.

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“…Cu concentrations are bene cial to earthworm growth but become harmful at higher concentrations (Haghparast et al, 2013). The earthworms grew at lower Zn concentrations but growth was signi cantly (p = 0.009) inhibited at soil concentrations ≥ 97.96 mg/kg (I.e.…”

Section: Effects Of Individual Metals On Alma Nilotica Growth and Rep...mentioning

confidence: 99%

Association between heavy metal uptake and growth and reproduction in the anecic earthworm, Alma nilotica (Grube 1855)

Fai,

Ngogang,

Kouemo

et al. 2023

Ecotoxicology

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Elevated heavy metal concentrations in soils is a cause for concern as they are hazardous to soil organisms including earthworms which are considered as ecosystem engineers. Current ecotoxicity tests predominantly use temperate earthworm species, and thus there is the need to include a broader genera of native species to improve ecological risk assessment. Alma nilotica, is a tropical anecic earthworm species that survives well under laboratory conditions and has potential for use in ecotoxicology testing but lacks published toxicity data for important pollutants. Growth and reproduction bioassays were carried out with Alma nilotica to determine the relationship between the concentrations of Cu, Zn, Pb and Cr in spiked soils and their bioaccumulation and toxic effects. Positive linear relationships were found between soil-metal and internal earthworm-metal concentrations. Cu did not inhibit growth up to 35 days of exposure but became toxic with longer exposure duration. Zn was not regulated by Alma nilotica although it is an essential metal that is well regulated by Eisenia sp. commonly used in standard ecotoxicity tests, showing differences in metal regulation by earthworms of different ecological functional groups. Based on bioaccumulation factors (BAFs), growth inhibition and reproduction effects the metals were ranked in decreasing toxicity as Pb > Cr > Zn > Cu. The mean 20% Internal Effects Concentrations (IEC20s) for reproduction were 1.03. 1.77, 10.2 and 218 mg metal/kg earthworm for Pb, Cr, Zn and Cu respectively. These data can contribute to the improvement of metal risk assessment particularly in tropical contexts.

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“…OM is a source of energy for earthworms. If OM in the soil is low, earthworms are not able to digest the soil and, as a result, the toxicity of some metals (for example cadmium) might increase, leading to and increased earthworm mortality and disorder in reproduction or growth (Rorat et al, 2013;Haghparast et al, 2013;Irizar et al, 2015;Kończak & Oleszczuk, 2018). However, data on OM impact on bioremediation are contradictory.…”

Section: Introductionmentioning

confidence: 99%

“…In Mostafaii et al (2016) study was found that organic matter has no effect on bioremediation. Some studies have shown that an increase of OM in soil contaminated with heavy metals can reduce the damaging effects of the metals (Haghparast et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Bioremediation Efficiency of Heavy Metal Contaminated Soil Using Earthworm Eisenia Fetida

Kniuipytė

Praspaliauskas

Žaltauskaitė

et al. 2020

The 11th International Conference ENVIRONMENTAL ENGINEERING 11th ICEE SELECTED PAPERS

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The amount of sewage sludge (SS) used in agriculture and forest plantations is constantly growing in EU. It’s known that even after various treatment methods some of contaminants still remain. The main risks of using SS in agriculture or forestry are related with hevy metals and organic pollutants content in SS. Heavy metals tend to acumu-late in the environment and living organisms and may cause different adverse effects. Bioremediation using earthworms can be used to eliminate or mitigate the threat of heavy metals. Bioremediation is cheaper, requiries less energy and is more environmentally friendly than conventional physical or chemical remediation methods. But it’s really important to evaluate bioremediation efficiency for SS, because there is evidence that nutrients in SS might improve efficiency of bioremediation. In this study earthworms Eisenia fetida were exposed for 9 weeks to SS amended soil. Earthworm mortality, growth and heavy metals (Al, Fe) accumulation were evaluated. The results showed that SS had a highly significant effect on earthworm mortality (F=4.98; p;lt0.05) and growth (F=3.88–67.02; p;lt0.05). Both metals concentrations in soil were signifficant (p;lt0.05) lower after vermi-remediation than after SS soil amendments. SS concentration had a significant effect to Al concentration accumulated in earthworm tissue (F=33.71; p;lt0.05). This study demonstrated that bioremediation efficiency using E. fetida depends on concentrations of SS, survival and growth of earthworms.

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Effect of Different Cu Levels on Growth of Earthworm, Eisenia fetida in a Calcareous Soil

Cited by 5 publications

References 10 publications

Negative Effect of Phosphogypsum Over Physiological Activity of Earthworm Eisenia Fetida

Negative Effect of Phosphogypsum Over Physiological Activity of Earthworm Eisenia Fetida

Association between heavy metal uptake and growth and reproduction in the anecic earthworm, Alma nilotica (Grube 1855)

Bioremediation Efficiency of Heavy Metal Contaminated Soil Using Earthworm Eisenia Fetida

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