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Toxicity Testing in Animals

Toxicity Testing in Animals

Toxicity tests in animals are grounded on two main assumptions: first, the effects observed in laboratory animals can be extrapolated to humans, especially when adjusted for body surface area; second, high-dose exposure in animals is essential to identify potential human hazards from lower doses. This is based on the quantal dose-response concept, which faces the challenge of extrapolating results from relatively few test animals to much larger human populations. For example, a 0.01% incidence...

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Ecotoxicological Methodologies to Evaluate Biomarkers at Different Scales in Neotropical Anurans

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Harmonizing ecotoxicological data reporting: A guide for toxicologists and chemists.

Surendra Balraadjsing¹, Philipp Kropf¹, Annetrude Boeije¹

¹Institute of Environmental Sciences (CML), Leiden University, Leiden, RA, The Netherlands.

Environmental Toxicology and Chemistry

|March 14, 2026

Summary

Scientific reporting in ecotoxicology often lacks detail, hindering data reuse and reproducibility. This study analyzes published data on nanomaterials, neonicotinoids, and PFAS to identify reporting gaps and propose solutions.

Keywords:

data quality data reporting harmonization reproducibility standardization

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Area of Science:

Ecotoxicology
Environmental Risk Assessment
Scientific Data Management

Background:

Reproducibility and data reuse are critical in scientific research, especially in ecotoxicology.
Exposure experiments in environmental risk assessment are vital but costly and time-consuming.
Suboptimal reporting practices impede the effective re-use of valuable ecotoxicological data.

Purpose of the Study:

To highlight insufficient reporting in ecotoxicology using publication examples.
To provide solutions for improving data and metadata reporting.
To analyze reporting practices for nanomaterials, neonicotinoids, and per- and polyfluoroalkyl substances (PFAS).

Main Methods:

Analysis of published data and metadata.
Focus on how data/metadata is reported, not just what variables are included.
Examination of studies involving nanomaterials, neonicotinoids, and PFAS.

Main Results:

Insufficient reporting is a significant issue across ecotoxicological literature.
Poorly described methodologies and inconsistent units are common problems.
Analysis reveals extent of data reporting issues for specific chemical classes.

Conclusions:

Improving data and metadata reporting is essential for enhancing reproducibility.
Standardized reporting practices will facilitate secondary scientific and regulatory use of ecotoxicological data.
Addressing reporting gaps is crucial for reliable environmental risk assessment.