Individual study: BioBullets para el control de obstrucciones de mejillon cebra en el systems de regadio Espanol
BioBullets . (2012) BioBullets para el control de obstrucciones de mejillon cebra en el systems de regadio Espanol. Report for Confederación Hidrográfica del Ebro, 1-14
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Asian clams: Add chemicals to the water
A controlled field trial conducted in 2011 in irrigation systems in Spain (BioBullets 2012) found that Asian clams of Corbicula fluminea and Corbicula fluminalis species showed 80% mortality when exposed to a fat-coated chemical called SB1000 and 100% mortality when exposed to a fat-coated chemical called SB2000. Clams of all sizes present were equally susceptible to the chemical. The chemicals were coated with an attractant to the clams. This targeted method of delivery to the filter-feeding clams resulted in the need for reduced concentrations of the chemicals. The product was approved for use within in-service irrigation systems for almonds, cherries and olives, and there were no negative effects on the crops. The chemical SB1000 was dosed at 150 mg/l and SB2000 at 30 mg/l for eight hours a day for two days, using a calibrated powder doser, with the products being delivered into different parts of the irrigation system. The number of live, freshly gaping and freshly empty shells were monitored before and after dosing and subsamples of clams were measured. Clams were monitored in a control irrigation pipe which received no chemicals. No clams died in the control pipe.