Table 3.
Reproductive biomarkers of smallmouth bass M. dolomieu collected at selected sited in the Potomac drainage and the Gauley River in spring 2006
| Site | Sex | Sample size | Gonadosomatic index | Intersex severity | Vitellogenina (mg/ml) |
|---|---|---|---|---|---|
| Gauley | F | 7 | No data | 0.02 (0.06)a | 1.076 (0.400) |
| M | 10 | 0.59 (0.24) | BD | ||
| Petersburg South Branch | F | 5 | No data | 0.75 (0.92)b | 1.782 (1.366) |
| M | 15 | 0.61 (0.14) | 0.021 (0.025) | ||
| Moorefield South Branch | F | 9 | No data | 0.50 (0.50)ab | 1.558 (0.900) |
| M | 11 | 0.71 (0.24) | 0.093 (0.052) | ||
| Springfield South Branch | F | 7 | No data | 1.14 (0.76)b | 0.863 (0.357) |
| M | 13 | 0.52 (0.13) | BD | ||
| South Fork Shenandoah | F | 7 | 5.88 (2.30)A | 1.62 (0.65)A | 6.014 (2.457)A |
| M | 13 | 0.43 (0.28) | BD | ||
| North Fork Shenandoah | F | 10 | 2.77 (1.50)B | 0.62 (0.40)B | 2.861 (2.574)B |
| M | 10 | 0.51 (0.19) | 0.007 (0.003) |
Data presented as means (standard deviation). Statistical comparisons were made between fish of the same sex. The Shenandoah sites were compared separately because of different sampling times. Values within a column denoted with the same letter are not significantly different. If no statistical differences were identified between sites for a given parameter, annotation was omitted to facilitate readability. The threshold for statistical significance was p ≤ 0.05
BD below detection
aVitellogenin means include only those samples that had measureable concentrations