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- Title
Analyzing retraction responses of Tubifex tubifex (Oligochaeta: Naididae) colonies to copper treatments through a digital image analysis approach for developing early biological warning systems.
- Authors
Lee, Dae-Seong; Kang, Hyejin; Park, Young-Seuk
- Abstract
Biological monitoring and assessments are commonly used for sustainable ecosystem management. Oligochaetes are found in various freshwater ecosystems and have been used as indicators of water quality and for the biological assessment of aquatic ecosystems. Among aquatic oligochaetes, the sludge worm Tubifex tubifex (Oligochaeta, Naididae) is tolerant to organic pollution and has been used as a biomonitoring indicator of toxicity and organic pollution. In this study, we investigated the response of worm colonies to copper (CuSO4) treatments (0.01, 0.05, 0.1, 0.5, and 1.0 mg/L) in an observation cage (100 mL beaker) for 30 min. Using a digital image analysis approach, we measured the changes in the colony image area between pre- and post-copper treatment. After copper treatment, the colony image area tended to decrease, even at low copper concentrations. In addition, the colony areas did not recover to their original levels at high concentrations, although those at low concentrations did. Area decreased proportional to the logarithm of the copper concentration. Finally, our results present the possible use of the retraction responses of Tubifex tubifex colonies to chemical disturbances as early biological warning systems.
- Subjects
COPPER; IMAGE analysis; BIOLOGICAL systems; OLIGOCHAETA; DIGITAL images; ECOSYSTEM management; ENCHYTRAEIDAE
- Publication
Environmental Science & Pollution Research, 2024, Vol 31, Issue 16, p24559
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-024-32655-w