80S 



40J5 



30% 



0% 



RECAPTURE RATES 



ALL SPECIES COMBINED 



^ 



2 



10 



DOWNSTREAM UPSTREAM GROUNDED 

 VA LIVE [X3] DEAD 



PILINGS 



Note: 



Numbers at the top of bars indicate the total number of 

 live mussels marked and placed in the plot in 1984. 



DOWNSTREAM = unfleeted, downstream control plot 



UPSTREAM = unfleeted, upstream control plot 



GROUNDED = fleeted plot, barges against shore 



PILINGS = fleeted plot, barges tied to pilings 



Figure 3 . Recapture rates for live and dead mussels recaptured 



from fleeted and unfleeted plots in the Illinois River 

 at Naples. 



24 



