Data Series 286
U.S. GEOLOGICAL SURVEY
Data Series 286
Table 5. Summary of monthly median biomarker and physical characteristic data for male common carp (Cyprinus carpio) from Las Vegas Bay and Overton Arm, Lake Mead, Nevada, May 1999–May 2000.
[Abbreviations: TL, total length, W, weight; GSI, Gonadosomatic Index; Vtg, Vitellogenin; mm, millimeter; kg, kilogram; mg/mL, milligram per milliliter; NA, data not available]
| Site | Sample size | TL (mm) |
W (kg) |
GSI | Vtg (mg/mL) |
Sperm quality | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Sperm count/ mg testis |
Viability (percent) | Mitochondrial function (percent) | Motility (percent) | Germ cell stage (percent sperm) | ||||||
| May 1999 | ||||||||||
| Las Vegas Bay | (14) | 504 | 1.58 | 6.30 | 0.034 | 1.20 × 1010 | 79.6 | 63.8 | NA | 77.3 |
| Overton Arm | (15) | 435 | 1.10 | 8.02 | .024 | 1.52 × 1010 | 90.0 | 82.1 | NA | 90.6 |
| June 1999 | ||||||||||
| Las Vegas Bay | (15) | 452 | 1.38 | 4.56 | 0.056 | 5.53 × 1010 | 97.4 | 96.7 | NA | 81.3 |
| Overton Arm | (15) | 449 | 1.14 | 6.92 | .030 | 7.41 × 1010 | 97.1 | 96.5 | NA | 84.4 |
| September 1999 | ||||||||||
| Las Vegas Bay | (12) | 479 | 1.41 | 4.17 | 0.105 | 6.08 × 1010 | 97.4 | 97.4 | NA | 49.2 |
| Overton Arm | (12) | 459 | 1.07 | 6.15 | .043 | 6.15 × 1010 | 95.7 | 95.4 | NA | 64.8 |
| November 1999 | ||||||||||
| Las Vegas Bay | (10) | 460 | 1.30 | 6.25 | 0.631 | 6.42 × 1010 | 97.8 | 97.6 | 76.7 | 76.6 |
| Overton Arm | (9) | 432 | .94 | 7.73 | .058 | 7.31 × 1010 | 96.0 | 95.7 | 79.2 | 85.9 |
| January 2000 | ||||||||||
| Las Vegas Bay | (10) | 469 | 1.35 | 5.50 | 0.015 | 5.52 × 1010 | 98.2 | 97.8 | 62.5 | 81.3 |
| Overton Arm | (10) | 442 | 1.06 | 7.70 | .019 | 4.71 × 1010 | 95.2 | 94.5 | 83.3 | 93.0 |
| March 2000 | ||||||||||
| Las Vegas Bay | (10) | 468 | 1.52 | 7.32 | 0.028 | 4.06 × 1010 | 97.3 | 95.8 | 75.0 | 83.6 |
| Overton Arm | (10) | 447 | .98 | 8.62 | .026 | 4.32 × 1010 | 96.5 | 96.1 | 75.8 | 82.0 |
| May 2000 | ||||||||||
| Las Vegas Bay | (12) | 474 | 1.30 | 5.40 | 0.014 | 3.12 × 1010 | 96.4 | 96.2 | 79.4 | 93.8 |
| Overton Arm | (10) | 433 | 1.02 | 6.68 | .022 | 2.49 × 1010 | 97.3 | 96.9 | 95.0 | 93.8 |
U.S. Department of the Interior | U.S. Geological Survey
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