The Science of The Total Environment, Journal Year: 2019, Volume and Issue: 700, P. 134914 - 134914

Published: Oct. 28, 2019

In the present work, marine invertebrate Mytilus galloprovincialis was used as model organism to evaluate toxic effects of neonicotinoid Calypso 480 SC (CAL) following 20 days exposure sub-lethal concentrations 7.77 mg L-1 (0.1% 96 h-LC50) and 77.70 (1% h-LC50), a recovery period 10 in uncontaminated seawater. Results revealed that both CAL increased significantly mortality rate cells haemolymph digestive gland, while gland were no longer able regulate cell volume. Exposure reduced parameters (Cl-, Na+), affected enzymatic activities superoxide dismutase catalase gill, caused also histopathological alterations gills. Main histological damages detected mussels lipofuscin accumulation, focal points necrosis, mucous overproduction infiltrative inflammations. Interestingly, persisted after CAL-free water, especially for haemocyte (K+, Na+, Ca2+, lactate dehydrogenase, glucose). A slight conditions detected. These findings suggested sub-chronic insecticide significant tissue M. galloprovincialis. Considering ecologically commercially important role coastal waters, potential risk posed by neonicotinoids this essential aquatic resource can be highlighted.

Language: Английский