Table 1 The vas deferens sequence index (VDSI) in female B. areolata during the 6 months of exposure to different nominal TBT concentrations

0 (control)

0

0

0

0

0

0

1

1.0 ± 0.2

1.2 ± 0.2

1.4 ± 0.3

1.2 ± 0.2

1.7 ± 0.7

1.0 ± 0.2

10

1.3 ± 0.3

1.4 ± 0.4

2.3 ± 0.5

1.9 ± 0.4

2.0 ± 0.4

1.8 ± 0.4

50

1.0 ± 0.2

1.7 ± 0.4

1.9 ± 0.4

1.4 ± 0.3

2.3 ± 0.4

1.5 ± 0.3

100

1.2 ± 0.2

1.8 ± 0.4

1.8 ± 0.3

2.2 ± 0.3

2.6 ± 0.4

2.1 ± 0.3

500

1.2 ± 0.2

1.7 ± 0.3

2.0 ± 0.3

2.2 ± 0.4

2.4 ± 0.3

3.0 ± 0.3