Morphological and DNA-based identification methods to assess earthworm diversity

New publication on morphological and DNA-based identification methods to assess earthworm diversity

The time-consuming and expensive identification of soil invertebrates is probably the most important reason for the lack of a German nationwide and standardised survey of soil organisms. The present publication should contribute to solving this problem. Earthworms and soil were sampled at 25 sites, and the animals were identified morphologically and using DNA-based identification methods: community DNA (comDNA) and environmental DNA (eDNA) metabarcoding.

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Hyalella azteca bioconcentration test - HYBITK. Kronenberger

Hyalella azteca bioconcentration test (HYBIT)

ECHA recently announced that the Hyalella azteca bioconcentration test (HYBIT) can fulfil the standard information requirement under REACH for bioaccumulation, unless dietary exposure is required (read more). Thereby, the bioconcentration test (OECD TG 305) with fish will be replaced on a case-by-case basis with a test system that uses freshwater amphipods, i.e. non-vertebrates. A test […]

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New publication on TKTD modeling of sublethal endpoints for time‐variable toxicant exposure of CeriodaphniaK. Duis

New publication on TKTD modeling of sublethal endpoints for time‐variable toxicant exposure of Ceriodaphnia

Toxicokinetic-toxicodynamic (TKTD) modeling can integrate all available data from individual‐level bioassays into a single framework and enable refined risk assessments by extrapolating from laboratory results to time‐variable exposure scenarios. Dynamic energy budget (DEB) models coupled with TKTD modules (DEB-TKTD) are an approach to assess and predict sublethal effects of chemicals on individual organisms. However, thorough […]

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In-house analytical servicesK. Duis

In-house analytical services

In-house analytical services under GLP are now available at ECT. Analytical verification of actual test concentrations is essential in ecotoxicity studies, and we are now prepared to provide this service in-house.

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