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Resistance of the invasive pest mussel Limnoperna fortunei to anoxia: Implications for biofouling control
In a study aimed at using oxygen deprivation as a control method for biofouling caused by the invasive bivalve Limnoperna fortunei, the authors estimated the survival rates of small (7 mm) and large (20 mm) mussels exposed to anoxia (below 0.16±0.02 mg/L dissolved oxygen) at 20 and 27°C under laboratory conditions. At 20°C 100% sample mortality (SM 100) of small mussels was attained in 20.7 days (LT50, lethal time to kill 50% of the mussels = 9.5 days) and large mussels in 29.3 days (LT50 = 18.0 days). At 27°C, small and large mussels achieved SM 100 much faster (11.6 and 10.2 days) and had correspondingly lower LT50 values (4.7 days for both sizes). Mortality rates differed significantly between size classes at 20°C but not at 27°C. Comparison with other invasive mollusks indicated that L. fortunei is less resistant to anoxia than Corbicula fluminea but more resistant than Dreissena polymorpha. Thus it was concluded that oxygen deprivation may be a viable alternative for the control of mussel fouling in industrial installations.
Resistance of the invasive pest mussel Limnoperna fortunei to anoxia: Implications for biofouling control
In a study aimed at using oxygen deprivation as a control method for biofouling caused by the invasive bivalve Limnoperna fortunei, the authors estimated the survival rates of small (7 mm) and large (20 mm) mussels exposed to anoxia (below 0.16±0.02 mg/L dissolved oxygen) at 20 and 27°C under laboratory conditions. At 20°C 100% sample mortality (SM 100) of small mussels was attained in 20.7 days (LT50, lethal time to kill 50% of the mussels = 9.5 days) and large mussels in 29.3 days (LT50 = 18.0 days). At 27°C, small and large mussels achieved SM 100 much faster (11.6 and 10.2 days) and had correspondingly lower LT50 values (4.7 days for both sizes). Mortality rates differed significantly between size classes at 20°C but not at 27°C. Comparison with other invasive mollusks indicated that L. fortunei is less resistant to anoxia than Corbicula fluminea but more resistant than Dreissena polymorpha. Thus it was concluded that oxygen deprivation may be a viable alternative for the control of mussel fouling in industrial installations.
Resistance of the invasive pest mussel Limnoperna fortunei to anoxia: Implications for biofouling control
Perepelizin, Pablo V. (author) / Boltovskoy, Demetrio (author)
Journal ‐ American Water Works Association ; 103 ; 79-85
2011-03-01
7 pages
Article (Journal)
Electronic Resource
English
Zebra Mussels , Wetlands , North America , Temperature , Economic Impact , Rivers , Estuaries , Brazil , South America , Argentina , Environment
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