Chesapeake Bay Field Survey
for Larval Callinectes sapidus, one season
(mean number of crabs computed from monthly plankton sampling data)
Station #1: Mouth of Chesapeake Bay
Water Temp
(°F) |
Salinity |
Zoea Stage 1-2 Stage 3-7 |
Megalopae |
||
| Dec - Mar | 41.43 |
29.71 |
0 |
0 |
0 |
| Apr - May | 56.65 |
27.44 |
1,500 |
0 |
0 |
| Jun - Aug | 73.49 |
28.47 |
1,200,000 |
0 |
400 |
| Sep - Nov | 65.12 |
29.94 |
15 |
0 |
1,500 |
Station #2: Mouth of James River
Water Temp
(°F) |
Salinity |
Zoea Stage 1-2 Stage 3-7 |
Megalopae |
||
| Dec - Mar | 43.45 |
22.19 |
0 |
0 |
0 |
| Apr - May | 59.40 |
21.82 |
300 |
0 |
0 |
| Jun - Aug | 74.52 |
24.09 |
30 |
0 |
30 |
| Sep - Nov | 65.62 |
23.42 |
5 |
0 |
250 |
Station #3: James River at Hog Island
Water Temp
(°F) |
Salinity |
Zoea Stage 1-2 Stage 3-7 |
Megalopae |
||
| Dec - Mar | 44.82 |
3.35 |
0 |
0 |
0 |
| Apr - May | 63.44 |
1.90 |
0 |
0 |
0 |
| Jun - Aug | 80.66 |
5.34 |
0 |
0 |
0 |
| Sep - Nov | 67.48 |
7.03 |
0 |
0 |
0 |
Station #4: Mouth of York River
Water Temp
(°F) |
Salinity |
Zoea Stage 1-2 Stage 3-7 |
Megalopae |
||
| Dec - Mar | 43.56 |
20.74 |
0 |
0 |
0 |
| Apr - May | 59.02 |
18.46 |
0 |
0 |
0 |
| Jun - Aug | 76.81 |
20.89 |
0 |
0 |
8 |
| Sep - Nov | 66.82 |
22.04 |
0 |
0 |
30 |
Station #5: Pamunkey River
Water Temp
(°F) |
Salinity |
Zoea Stage 1 -2 Stage 3-7 |
Megalopae |
||
| Dec - Mar | 44.45 |
2.25 |
0 |
0 |
0 |
| Apr - May | 63.83 |
1.65 |
0 |
0 |
0 |
| Jun - Aug | 80.19 |
4.30 |
0 |
0 |
0 |
| Sep - Nov | 66.07 |
6.45 |
0 |
0 |
0 |
Station #6: Mouth of Rappahannock River
Water Temp
(°F) |
Salinity |
Zoea Stage 1 -2 Stage 3-7 |
Megalopae |
||
| Dec - Mar | 42.40 |
17.09 |
0 |
0 |
0 |
| Apr - May | 59.36 |
14.35 |
0 |
0 |
0 |
| Jun - Aug | 78.12 |
16.26 |
0 |
0 |
1 |
| Sep - Nov | 65.43 |
18.65 |
0 |
0 |
0 |
Station #7: Bayside Eastern Shore
Water Temp
(°F) |
Salinity |
Zoea Stage 1 -2 Stage 3-7 |
Megalopae |
||
| Dec - Mar | 42.62 |
20.65 |
0 |
0 |
0 |
| Apr - May | 56.81 |
19.03 |
0 |
0 |
0 |
| Jun - Aug | 76.34 |
19.68 |
0 |
0 |
11 |
| Sep - Nov | 65.44 |
21.68 |
0 |
0 |
63 |
Station #8: Tangier Island
Water Temp
(°F) |
Salinity |
Zoea Stage 1 -2 Stage 3-7 |
Megalopae |
||
| Dec - Mar | 41.70 |
19.04 |
0 |
0 |
0 |
| Apr - May | 58.83 |
17.39 |
0 |
0 |
0 |
| Jun - Aug | 77.64 |
18.27 |
0 |
0 |
0 |
| Sep - Nov | 64.07 |
20.30 |
0 |
0 |
3 |
Station #9: Smith Island
Water Temp
(°F) |
Salinity |
Zoea Stage 1 -2 Stage 3-7 |
Megalopae |
||
| Dec - Mar | 41.51 |
17.76 |
0 |
0 |
0 |
| Apr - May | 58.22 |
16.48 |
0 |
0 |
0 |
| Jun - Aug | 78.29 |
16.88 |
0 |
0 |
0 |
| Sep - Nov | 64.73 |
18.84 |
0 |
0 |
1 |
Station #10: Mouth of Potomac River
Water Temp
(°F) |
Salinity |
Zoea Stage 1 -2 Stage 3-7 |
Megalopae |
||
| Dec - Mar | 41.85 |
13.40 |
0 |
0 |
0 |
| Apr - May | 57.10 |
11.50 |
0 |
0 |
0 |
| Jun - Aug | 75.97 |
12.90 |
0 |
0 |
0 |
| Sep - Nov | 69.94 |
14.89 |
0 |
0 |
0 |
Station #11: Upriver Potomac
Water Temp
(°F) |
Salinity |
Zoea Stage 1 -2 Stage 3-7 |
Megalopae |
||
| Dec - Mar | 41.80 |
3.56 |
0 |
0 |
0 |
| Apr - May | 59.28 |
1.40 |
0 |
0 |
0 |
| Jun - Aug | 79.36 |
2.31 |
0 |
0 |
0 |
| Sep - Nov | 63.51 |
4.71 |
0 |
0 |
0 |
Station #12: Mouth of Choptank River
Water Temp
(°F) |
Salinity |
Zoea Stage 1 -2 Stage 3-7 |
Megalopae |
||
| Dec - Mar | 40.86 |
13.77 |
0 |
0 |
0 |
| Apr - May | 58.53 |
11.94 |
0 |
0 |
0 |
| Jun - Aug | 77.74 |
11.97 |
0 |
0 |
0 |
| Sep - Nov | 63.15 |
14.70 |
0 |
0 |
0 |
Station #13: Mouth of Severn River
Water Temp
(°F) |
Salinity |
Zoea Stage 1 -2 Stage 3-7 |
Megalopae |
||
| Dec - Mar | 41.38 |
14.50 |
0 |
0 |
0 |
| Apr - May | 53.15 |
11.99 |
0 |
0 |
0 |
| Jun - Aug | 73.79 |
13.00 |
0 |
0 |
0 |
| Sep - Nov | 65.90 |
15.55 |
0 |
0 |
0 |