Table 3.
Metal levels ppb (means and SE wet weight) in Horseshoe Crabs eggs from New Jersey collected 1999 and 2012. Analysis done on wet weight basis; results in ppb. Shown are the aritmetic means and standard error with the geometric means below.
| 1999 | 2012 | 2012 | ||
|---|---|---|---|---|
|
| ||||
| Villas | Reeds | Baycove | Kruskal-Wallis X2 | |
|
| ||||
| Number | 12 | 2 | 8 | |
| arsenic | 3668 ± 350 | 3250 ± 1050 | 4413 ± 375 | 3.4 NS |
| 3499 | 3076 | 4292 | ||
| cadmium | 99 ± 61 | 8.20 ± 3.90 | 0.98 ± 0.19 | 12.7 (0.002) |
| 28 | 7.18 | 0.69 | ||
| chromium | 39 ± 6 | 175 ± 35 | 97.1 ± 19 | 11.8 (0.003) |
| 35 | 171 | 86 | ||
| lead | 48 ± 9 | 86 ± 44 | 37 ± 5.20 | 1.6 NS |
| 27 | 74 | 34.60 | ||
| manganese | 2408 ± 281 | 6750 ± 2250 | 7325 ± 754 | 6.2 (0.04) |
| 2246 | 6364 | 7052 | ||
| mercury | 22 ± 4 | 18 ± 5 | 8 ± 2 | 15.8 (0.0004) |
| 18.0 | 17 | 5.30 | ||
| selenium | 969 ± 184 | 1300 ± 100 | 907 ± 169 | 2.1 NS |
| 748 | 1296 | 789 | ||