Enchytraeid Reproduction Test (ERT): Sublethal responses of two Enchytraeus species (Oligochaeta) to toxic chemicals

Autor(en): Collado, R
Schmelz, RM
Moser, T
Rombke, J
Stichwörter: 4-nitrophen; Agriculture; carbendazim; Ecology; ecotoxicology; Enchytraeidae; Enchytraeus sp.; Environmental Sciences & Ecology; laboratory test; Soil Science
Erscheinungsdatum: 1999
Herausgeber: ELSEVIER GMBH, URBAN & FISCHER VERLAG
Journal: PEDOBIOLOGIA
Volumen: 43
Ausgabe: 6
Startseite: 625
Seitenende: 629
Zusammenfassung: 
Recently, the ERT (Enchytraeid Reproduction Test) was developed as a new laboratory test system using species of the genus Enchytraeus (mainly E. albidus). The main endpoint is reproduction (= number of juveniles), not mortality. Since E. albidus, which was chosen mainly for its size, prefers organic substrates, the test was also performed with another, true soil-dwelling species of the same genus. The species belongs to the E. buchholzi/minutus - complex, and is smaller and reproduces faster than E. albidus. Each species was tested for its sublethal susceptibility to carbendazim (formulation Derosal(R)) and LC-nitrophenol, respectively. The tests were performed following the Draft Guideline of the Enchytraeid Reproduction Test (ERT). The NOEC value (reproduction) for carbendazim was determined as 1.2 mg/kg (E. albidus) and 2.7 mg/kg (E. ``buchholzi''), whereas the NOEC values calculated for 4-nitrophenol were 10.0 mg/kg (E. albidus) and 5.6 mg/kg (E. ``buchholzi''). Neither of the examined species proved to be more susceptible to these chemicals than the other in general.
ISSN: 00314056

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