Valve movement response of the freshwater clam Corbicula fluminea following exposure to waterborne arsenic
Resource
Ecotoxicology, 18(5), 567-576
Journal
Ecotoxicology
Journal Volume
18
Journal Issue
5
Pages
567-576
Date Issued
2009
Author(s)
Abstract
We developed an inductance-based valvometry technique as a detection system to measure the valve daily activity in freshwater clam Corbicula fluminea in response to waterborne arsenic. Our findings reveal that C. fluminea experiences a valve opening in the absence of arsenic predominantly in the morning hours (03:00-08:00) with a mean daily opening/closing period of 21.32 (95% CI: 20.58-22.05) h. Amplification of daily activity occurred in the presence of arsenic. Behavioral toxicity assays revealed arsenic detection thresholds of 0.60 (95% CI: 0.53-0.66) mg l-1 and 0.35 (95% CI: 0.30-0.40) mg l-1 for response times of 60 and 300 min, respectively. The proposed valve daily activity model was linked with response time-specific Hill dose-response functions to predict valve opening/closing behavior in response to arsenic. The predictive capabilities were verified satisfactory with the measurements. Our results implicate a biomonitoring system by valve daily activity in C. fluminea to identify safe water uses in areas with elevated arsenic. © 2009 Springer Science+Business Media, LLC.
Subjects
Arsenic; Biomonitor; Corbicula fluminea; Freshwater clam; Toxicology; Valve daily activity
SDGs
Other Subjects
arsenic; fresh water; arsenic; bioassay; biomonitoring; bivalve; dose-response relationship; measurement method; movement; pollution effect; pollution exposure; toxicity test; article; behavior; biological monitoring; Corbicula; Corbicula fluminae; exposure; movement (physiology); nonhuman; physical activity; prediction; priority journal; response time; toxicity testing; water pollution; Animals; Arsenic; Behavior, Animal; Corbicula; Environmental Monitoring; Periodicity; Water Pollutants, Chemical; Bivalvia; Corbicula fluminea
Type
journal article
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