Table 1 Concentrations of trace metals (mg/kg, Mean ± SD) in the liver and intestine of Sclerophrys regularis uninfected and infected with the nematode Cosmocerca sp. within the natural habitats and dumpsites from Lagos metropolis, Nigeria (March 2020–February 2021)

Liver

 Zn

9.49 ± 6.11^D

30.0 ± 29.22^C

94.5 ± 31.62^B

111 ± 15.28^A

75

 Ni

0.120 ± 0.15

0.0993 ± 0.09

0.711 ± 0.61

0.415 ± 0.05

80

 Co

0.354 ± 0.51

0.0253 ± 0.04

0.378 ± 0.43

0.855 ± 0.16

–

 Cu

3.23 ± 1.98

1.59 ± 1.78

9.46 ± 3.66

0.000 ± 0.00

30

 Pb

0.000 ± 0.00

0.310 ± 0.54

1.27 ± 1.33

3.60 ± 1.24

2

Intestine

 Zn

23.7 ± 4.88

34.9 ± 23.70

40.2 ± 35.19

40.2 ± 4.25

75

 Ni

0.0713 ± 0.03

0.301 ± 0.07

0.010 ± 0.01

0.010 ± 0.001

80

 Co

0.152 ± 0.09

0.0910 ± 0.15

0.022 ± 0.01

0.022 ± 0.02

–

 Cu

0.145 ± 0.06

0.683 ± 0.14

3.47 ± 0.20

3.47 ± 0.64

30

 Pb

0.235 ± 0.15

0.153 ± 0.24

0.676 ± 0.09

0.676 ± 0.12

2