| HMG group | Variables | Correlation | Regression coefficients | square | Significance | Dependent | Independent | | | | | | | | |
| O. hyla hyla | Cu | Ni, Zn, Cr, and Cd | 0.722 | 128.74 | −6.2 | 1.684 | 3.370 | −258.55 | 0.521 | 0.469 | Cr | Ni, Zn, Cu, and Cd | 0.79 | 3.92 | 0.026 | 0.501 | −0.08 | 26.25 | 0.63 | 0.30 | Cd | Ni, Zn, Cr, and Cu | 0.939 | .172 | −0.002 | −0.021 | 0.003 | 0.021 | 0.881 | 0.039 |
| C. servilia | Cu | Ni, Zn, Cr, and Cd | 0.722 | 128.74 | −6.214 | 0.684 | 3.370 | −258.55 | 0.521 | 0.469 | Cr | Ni, Zn, Cu, and Cd | 0.797 | 3.92 | 0.026 | 0.501 | −0.080 | 26.257 | 0.635 | 0.303 | Cd | Ni, Zn, Cr, and Cu | 0.939 | 0.172 | −0.002 | −0.021 | 0.003 | 0.021 | 0.881 | 0.039 |
| D. chrysippus | Cu | Ni, Zn, Cr, and Cd | 0.547 | 75.446 | −15.492 | −0.17 | 10.88 | 52.27 | 0.299 | 0.785 | Cr | Ni, Zn, Cu, and Cd | 0.751 | 4.27 | 0.008 | 0.482 | 0.024 | −5.365 | 0.564 | 0.404 | Cd | Ni, Zn, Cr, and Cu | 0.328 | 0.108 | 0.398 | 0.000 | 0.007 | 0.001 | −0.019 | 0.968 |
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