640 
Fishery Bulletin 95(4), 1997 
Table 2 
Percent increase in yield-per-recruit of Atlantic croaker, Micropogonias undulatus, from fishing mortality (F) = 
mortality at the level that gives maximum potential yield-per-recruit ( F MAX ) for mean age-at-first-capture (t c ) = 1 
mortality (M) = 0.20-0.35 for Chesapeake Bay. 
0.75 to fishing 
-5 and natural 
M 
t c 
Yield-per-recruit (g) 
% increase 
M 
t c 
Yield-per-recruit (g) 
% increase 
F= 0.75 
F MAX 
F= 0.75 
F 
1 MAX 
0.20 
1 
160.4 
168.9 
5.3 
0.30 
1 
129.2 
142.5 
10.3 
2 
153.9 
165.1 
7.3 
2 
112.8 
128.9 
14.3 
3 
140.3 
154.1 
9.8 
3 
93.4 
109.0 
16.7 
4 
123.5 
137.8 
11.6 
4 
74.6 
88.2 
18.2 
5 
106.3 
119.8 
12.7 
5 
58.2 
69.4 
19.2 
0.25 
1 
143.7 
153.5 
6.8 
0.35 
1 
116.5 
132.4 
13.6 
2 
131.6 
145.8 
10.8 
2 
97.0 
114.0 
17.5 
3 
114.3 
129.5 
13.3 
3 
76.5 
91.7 
19.9 
4 
95.8 
110.3 
15.1 
4 
58.1 
70.7 
21.7 
5 
78.5 
91.2 
16.2 
5 
43.1 
52.9 
22.7 
