Table 3.
Haematological parameters of Astyanax gr. bimaculatus caught in different sites of the Ocoa River and a reference site (Negro river), Villavicencio—Meta, Colombia during dry and rainy season
| Nuclear alteration | Dry | Rainy | ||||||
|---|---|---|---|---|---|---|---|---|
| Site 1 | Site 2 | Site 3 | Reference | Site 1 | Site 2 | Site 3 | Reference | |
| Erythrocytes (x106x µl-1) | 1.83 ± 0.14 | 1.65 ± 0.10 | 1.73 ± 0.08 | 2.18 ± 0.21 | 1.56 ± 0.05 | 1.33 ± 0.07 | 1.43 ± 0.08 | 1.55 ± 0.11 |
| Leukocytes (x103x µl-1) | 62.26 ± 4.56 | 56.83 ± 7.15 | 64.14 ± 8.28 | 57.48 ± 4.25 | 32.46 ± 1.80 | 35.83 ± 1.53 | 39.70 ± 1.74 | 39.53 ± 1.20 |
| Thrombocytes (x103x µl-1) | 62.82 ± 6.96 | 53.45 ± 9.63 | 48.37 ± 9.98 | 50.93 ± 7.43 | 28.65 ± 2.21 | 30.53 ± 1.80 | 35.44 ± 2.06 | 32.41 ± 1.15 |
| Hemoglobin (g/dl) | 10.87 ± 0.38 | 7.91 ± 0.33* | 8.65 ± 0.58 | 10.08 ± 0.36 | 10.79 ± 0.22 | 9.78 ± 0.28 | 9.41 ± 0.21 | 10.36 ± 0.20 |
| PVC (%) | 24.27 ± 0.73 | 23.91 ± 0.78 | 24.43 ± 0.66 | 25.30 ± 0.93 | 22.66 ± 0.87 | 21.35 ± 0.80 | 23.48 ± 0.91 | 22.94 ± 1.14 |
| MCV (fL) | 144.34 ± 6.82 | 152.59 ± 6.25 | 145.53 ± 5.11 | 133.50 ± 9.35 | 145.71 ± 3.11 | 163.97 ± 4.36 | 167.63 ± 3.85 | 152.43 ± 5.69 |
| MCH (pg) | 70.45 ± 6.34 | 54.62 ± 5.19 | 54.31 ± 5.58 | 56.78 ± 5.24 | 71.93 ± 2.99 | 78.78 ± 5.41 | 68.79 ± 2.61 | 71.83 ± 4.68 |
| MCHC (%) | 46.75 ± 2.73 | 34.51 ± 2.32 | 36.67 ± 3.04 | 41.57 ± 2.59 | 49.97 ± 2.34 | 47.64 ± 2.74 | 41.09 ± 1.36 | 47.09 ± 2.54 |
| Lymphocytes (%) | 70.81 ± 0.49 | 57.45 ± 1.04* | 54.05 ± 1.14* | 70.09 ± 0.68 | 70.25 ± 0.58 | 55.65 ± 1.19* | 52.56 ± 0.84* | 69.76 ± 0.85 |
| Neutrophils (%) | 20.23 ± 0.66 | 24.18 ± 0.78* | 28.90 ± 1.04* | 20.00 ± 0.57 | 19.38 ± 0.60 | 25.00 ± 0.83* | 27.40 ± 0.76* | 19.47 ± 0.82 |
| Monocytes (%) | 5.65 ± 0.49 | 3.91 ± 0.45 | 4.33 ± 0.40 | 5.61 ± 0.49 | 5.78 ± 0.46 | 4.10 ± 0.36 | 4.00 ± 0.29 | 6.35 ± 0.62 |
| Basophils (%) | 0.42 ± 0.10 | 0.36 ± 0.10 | 0.48 ± 0.11 | 0.48 ± 0.11 | 0.53 ± 0.09 | 0.55 ± 0.11 | 0.48 ± 0.10 | 0.47 ± 0.12 |
| Eosinophils (%) | 0.46 ± 0.10 | 0.36 ± 0.10 | 0.38 ± 0.11 | 0.35 ± 0.10 | 0.44 ± 0.09 | 0.35 ± 0.11 | 0.60 ± 0.10 | 0.35 ± 0.12 |
* For the same season of year, asterisks indicate statistically significant differences (p < 0.05) between the reference site and the monitoring sites. Site 1 (Nacimiento, before entering the city), site 2 (Centauros, where sewage from the city is dumped), site 3 (Caño Seco, after the city and close to a landfill) and reference site (R)