Automated quantification of Enchytraeus crypticus juveniles in different soil types using RootPainter

The manual counting of juveniles in enchytraeid soil toxicity tests is time-consuming, labour-intensive, repetitive, prone to subjectivity, but can potentially be automated through deep learning methods using convolutional neural networks. This study investigated if RootPainter can be used as a tool...

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Main Authors: Bart G. van Hall, Cornelis A.M. van Gestel
Format: Article
Language:English
Published: Elsevier 2025-01-01
Series:Ecotoxicology and Environmental Safety
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Online Access:http://www.sciencedirect.com/science/article/pii/S0147651324015586
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author Bart G. van Hall
Cornelis A.M. van Gestel
author_facet Bart G. van Hall
Cornelis A.M. van Gestel
author_sort Bart G. van Hall
collection DOAJ
description The manual counting of juveniles in enchytraeid soil toxicity tests is time-consuming, labour-intensive, repetitive, prone to subjectivity, but can potentially be automated through deep learning methods using convolutional neural networks. This study investigated if RootPainter can be used as a tool to automatically quantify Enchytraeus crypticus juveniles in toxicity tests using different soil types. Toxicity tests were performed following OECD guideline 220 using five different pesticides (two fungicides and three insecticides) and four different soil types (three OECD artificial soils and one natural LUFA 2.2 soil). Manual counts were done by three different operators, with each operator counting images for one pesticide. Correlations between automated and manual counts were strong and significant in all four soils for all operators, with Pearson’s correlation coefficients ≥ 0.955 and intraclass comparability coefficients ≥ 0.936. Toxicity values (EC50 and EC10) calculated from the manual and automated counts were within a factor of 0.85 – 1.30. Overall, the results show that RootPainter is a suitable tool for a reliable, repeatable and accurate quantification of enchytraeid juveniles, and can eliminate the time-consuming manual counting process.
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spelling doaj-art-651342764f45455cbd50db39b2ac41da2025-01-23T05:25:44ZengElsevierEcotoxicology and Environmental Safety0147-65132025-01-01289117482Automated quantification of Enchytraeus crypticus juveniles in different soil types using RootPainterBart G. van Hall0Cornelis A.M. van Gestel1Corresponding author.; Amsterdam Institute for Life and Environment (A-LIFE), Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, Amsterdam 1081 HZ, The NetherlandsAmsterdam Institute for Life and Environment (A-LIFE), Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, Amsterdam 1081 HZ, The NetherlandsThe manual counting of juveniles in enchytraeid soil toxicity tests is time-consuming, labour-intensive, repetitive, prone to subjectivity, but can potentially be automated through deep learning methods using convolutional neural networks. This study investigated if RootPainter can be used as a tool to automatically quantify Enchytraeus crypticus juveniles in toxicity tests using different soil types. Toxicity tests were performed following OECD guideline 220 using five different pesticides (two fungicides and three insecticides) and four different soil types (three OECD artificial soils and one natural LUFA 2.2 soil). Manual counts were done by three different operators, with each operator counting images for one pesticide. Correlations between automated and manual counts were strong and significant in all four soils for all operators, with Pearson’s correlation coefficients ≥ 0.955 and intraclass comparability coefficients ≥ 0.936. Toxicity values (EC50 and EC10) calculated from the manual and automated counts were within a factor of 0.85 – 1.30. Overall, the results show that RootPainter is a suitable tool for a reliable, repeatable and accurate quantification of enchytraeid juveniles, and can eliminate the time-consuming manual counting process.http://www.sciencedirect.com/science/article/pii/S0147651324015586EcotoxicologyToxicity testsSoil organism countingSoil image analysisInteractive machine learning
spellingShingle Bart G. van Hall
Cornelis A.M. van Gestel
Automated quantification of Enchytraeus crypticus juveniles in different soil types using RootPainter
Ecotoxicology and Environmental Safety
Ecotoxicology
Toxicity tests
Soil organism counting
Soil image analysis
Interactive machine learning
title Automated quantification of Enchytraeus crypticus juveniles in different soil types using RootPainter
title_full Automated quantification of Enchytraeus crypticus juveniles in different soil types using RootPainter
title_fullStr Automated quantification of Enchytraeus crypticus juveniles in different soil types using RootPainter
title_full_unstemmed Automated quantification of Enchytraeus crypticus juveniles in different soil types using RootPainter
title_short Automated quantification of Enchytraeus crypticus juveniles in different soil types using RootPainter
title_sort automated quantification of enchytraeus crypticus juveniles in different soil types using rootpainter
topic Ecotoxicology
Toxicity tests
Soil organism counting
Soil image analysis
Interactive machine learning
url http://www.sciencedirect.com/science/article/pii/S0147651324015586
work_keys_str_mv AT bartgvanhall automatedquantificationofenchytraeuscrypticusjuvenilesindifferentsoiltypesusingrootpainter
AT cornelisamvangestel automatedquantificationofenchytraeuscrypticusjuvenilesindifferentsoiltypesusingrootpainter