Parameters * Copper sulfate concentrations (mg CuSO4. l-1)
0 (Control) 0.004 0.013 0.019 0.026
Initial length (cm) 3.61 ± 0.034a 3.58 ± 0.026a 3.57 ± 0.014a 3.6 ± 0.031a 3.59 ± 0.04a
Final length (cm) 3.76 ± 0.02a 3.71 ± 0.037ab 3.65 ± 0.017ab 3.7 ± 0.026ab 3.6 ± 0.01b
Initial weight (gr) 0.36 ± 0.005a 0.36 ± 0.017a 0.37 ± 0.011a 0.37 ± 0.023a 0.36 ± 0.011a
Final weight (gr) 0.82 ± 0.023a 0.78 ± 0.023a 0.72 ± 0.011b 0.63 ± 0.005c 0.65 ± 0.003c
Specific growth rate 0.91 ± 0.013a 0.86 ± 0.02a 0.71 ± 0.015b 0.69 ± 0.041b 0.59 ± 0.018b
Feed conversion ratio 4.36 ± 0.16c 4.76 ± 0.065bc 5.88 ± 0.00b 6.62 ± 0.31ab 7.88 ± 0.89a
Relative fecundity 56.82 ± 1.82a 51.42 ± 3.52a 32.45 ± 1.63b 34.89 ± 1.51b 25.57 ± 1.33b
Gonadosomatic index 6.1 ± 0.115a 5.61 ± 0.034b 5.32 ± 0.005c 5.29 ± 0.023c 5.31 ± 0.011c
Surviving rate 88.88 ± 2.77a 55.55 ± 7.34b 52.77 ± 7.34b 30.55 ± 10.01c 27.77 ± 2.77c
Offspring production 3.88±0.22a 3.33±0.17b 1.94±0.07c 1.83±0.096c 1.55±0.07c
*Mean ± SD values with different superscript letters within a raw for a parameter are significantly different (P<0.05).
Table 1: The mean results of growth and reproduction performances of guppy (P. reticulate) in response of exposure to several concentrations of Cooper
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