Sensory determinants of valve rhythm dynamics provide in situ biodetection of copper in aquatic environments
| Autor: | Bo-Ching Chen, Chung-Min Liao, Wei-Yu Chen, Li-John Jou |
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| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
In situ Toxicodynamics Health Toxicology and Mutagenesis Fresh Water 010501 environmental sciences Biology 01 natural sciences Models Biological Rhythm Biomonitoring Environmental Chemistry Ecotoxicology Animals Circadian rhythm Corbicula fluminea Corbicula 0105 earth and related environmental sciences 010604 marine biology & hydrobiology Environmental engineering General Medicine biology.organism_classification Pollution Environmental chemistry Copper Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Environmental science and pollution research international. 23(6) |
| ISSN: | 1614-7499 |
| Popis: | This study successfully applied an improved valvometry technique to measure waterborne copper (Cu), based on valve activity dynamics of the freshwater clam Corbicula fluminea. The improved valvometry technique allows the use of free-range bivalves and avoids causing stresses from experimental artifacts. The proposed daily valve rhythm models and a toxicodynamics-based Hill model were linked to predict valve dynamic responses under different Cu exposures with a circadian valve rhythm endpoint. Cu-specific detection threshold was 5.6 (95 % CI 2.1-9.3) and 19.5 (14.6-24.3) μg L(-1) for C. fluminea, based on response times of 300 and 30 min, respectively. Upon exposure to Cu concentrations in excess of 50 μg L(-1), the alteration of valve rhythm behavior was correlated with Cu concentration within 30 min, indicating notable sensing ability. This study outlines the feasibility of an in situ early warning dynamic biomonitoring system for detection of waterborne Cu based on circadian valve activities of C. fluminea. |
| Databáze: | OpenAIRE |
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