Grant and Olney: Spawning of Morone saxatilis in Virginia rivers 



189 



20 30 10 20 



APRIL MAY 



Figure 3 



Spatial and temporal abundance 

 (numbers/100 m :i ) of striped bass 

 eggs and larvae in the Mattaponi 

 River, 1980. River miles are nau- 

 tical miles above the York River 

 mouth. 



James River System, 1981 and 1983 



Location of peak spawning and maximum den- 

 sities of eggs differed considerably between 1981 

 and 1983 (Fig. 5). Occurrence of eggs much far- 

 ther upstream in 1981 was probably related to 

 drought and intrusion of saltwater in winter and 

 spring, 1980-81. Spawning extended over 35 km 

 in 1981, and over 40km in 1983. In both years 



45 

 40- 



CC 

 LU 



> 35 



RAPPAHANNOCK RIVER 



PAMUNKEY RIVER 



JAMES RIVER 



Figure 4 



Spatial and temporal abundance (numbers/ 

 100 m 3 ) of striped bass eggs in three Virginia 

 rivers, 1983. River miles are nautical miles. 



1981 



1983 



Figure 5 



Spatial extent of observed striped bass egg occurrence, James 

 River, 1981 and 1983. Over 80% of eggs occurred in solid black 

 areas. Inset shows location in Chesapeake Bay region. 



