Stress‐induced enhancement of reproduction in earthwormoctochaetus pattoniexposed to chromium (vi) and mercury (ii)— implications in environmental management

Biomass Alteration of Earthworm in the Organic Waste-Contaminated Soil

“…The estimated NOEC values were 39.2 mg Cd kg -1 , 32 mg Cu kg -1 , 1,810 mg Pb kg -1 and 199 mg Zn kg -1 . In soil contaminated by effluent containing Cr, the rate of 10 mg kg -1 was fatal to Peretima posthuma and other species (Abbasi & Soni, 1983). Copper caused higher mortality than Pb or Zn against E. fetida at the same rate and the LC 50 and NOEC values for Cd could not be determined since no significant mortality was observed at the highest test rate (300 µg g -1 ) (Spurgeon et al, 1994).…”

Toxicological Benchmarks for Screening Potential Contaminants of Concern for Effects on Soil and Litter Invertebrates and Heterotrophic Process

“…The 0.4 ppm benchmark for Cr is based on the work of Abbasi and Soni (1983). A safety factor of 5 was applied to the 2 ppm LOEC because it caused a 75% reduction in earthworm survival.…”

Mercury Exposure in Bald Eagles (Haliaeetus leucocephalus) Admitted for Rehabilitation in Iowa, USA

“…Inorganic mercury compounds were also toxic to earthworms (Octochaetus pattoni); in 60 days, 50% died at soil Hg levels of 0.79 mg/kg, and all died at 5.0 mg/kg (Abbasi and Soni 1983).…”