Asiatic clam Corbicula fluminea exhibits distinguishable behavioural responses to crude oil under semi-natural multiple stress conditions

•Innovative Unmanned Technology is required urgently to ensure the protection of our aquatic environment.•Valvometry, using bivalve mollusk behaviour as an endpoint, is a disruptive technology to monitor industrial impact at sea.•We applied it to crude oil detection and we studied its strength under...

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Published in:Aquatic toxicology 2020-02, Vol.219, p.105381-105381, Article 105381
Main Authors: Miserazzi, A., Sow, M., Gelber, C., Charifi, M., Ciret, P., Dalens, J.M., Weber, C., Le Floch, S., Lacroix, C., Blanc, P., Massabuau, J.C.
Format: Article
Language:English
Subjects:
Animals
Behavior, Animal - drug effects
Biomonitoring
Bivalve mollusks
Corbicula - drug effects
Corbicula - metabolism
Crude oil
Ecosystem
Environmental Monitoring - methods
France
Fresh Water - chemistry
Gills - drug effects
Gills - metabolism
HFNI valvometry
Life Sciences
Models, Theoretical
Outdoor mesocosm
Oxidative Stress - drug effects
PAH
Petroleum - toxicity
Polycyclic Aromatic Hydrocarbons - toxicity
Water Pollutants, Chemical - toxicity
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Summary:•Innovative Unmanned Technology is required urgently to ensure the protection of our aquatic environment.•Valvometry, using bivalve mollusk behaviour as an endpoint, is a disruptive technology to monitor industrial impact at sea.•We applied it to crude oil detection and we studied its strength under outdoor multistress conditions in artificial stream.•Oil detection was not confounded by temperature changes, presence of barium, noise pollution and turbidity pulses. Aquatic ecosystems are subject to many anthropogenic disturbances, and understanding their possible impacts is a real challenge. Developing approaches based on the behaviour of bivalve mollusks, an integrating marker of the state of the organisms, and therefore of their environment, is relevant, whether within a natural ecosystem or an ecosystem subject to industrial activities. The main objective of this study was to identify by HFNI Valvometry a reliable and reproducible clam behavioural response in the presence of crude oil in a multistress context. To closely replicate actual field conditions, Corbicula fluminea was exposed in outdoor artificial streams that were subject to natural variations and were continuously fed by fresh water from the Gave de Pau (S.W. France). After a period of 26 days in these artificial streams, the clams (n = 14–16 per condition) were separately exposed for 10 days to crude oil alone, crude oil and barium, crude oil and noise pollution, crude oil and turbidity pulses, barium alone, noise pollution alone, turbidity pulses alone or natural changes alone. The secondary objective was to characterize the accumulation of polycyclic aromatic hydrocarbons (PAH) in 3 tissues (gills, adductor muscles and foot) in clams exposed for 10 days to crude oil alone or under multistress conditions (n = 5 clams per condition) and then to compare the accumulation and behaviour of clams under these conditions. The response of clams to crude oil alone or under multistress conditions was visually and statistically significant and not confounded by the other disturbances tested, despite large variations in water temperature. In the presence of crude oil, the behaviour of clams was characterized by an increase in valve-closure duration, a decrease in valve-opening amplitude and an increase in valve agitation index. In the presence of crude oil, the clam behaviour showed no direct relationship with PAH accumulation in the gills, adductor muscles or foot, although hypothetical mechanisms are
ISSN:0166-445X
1879-1514
DOI:10.1016/j.aquatox.2019.105381