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Table 1 Mean directions of toads in the natural and the reversed magnetic field

From: Magnetic orientation of the Common Toad: establishing an arena approach for adult anurans

 

Natural magnetic field

Reversed magnetic field

Comparison

 

Direction

r

P

Direction

r

P

t

P

Initial orientation

355°

0.20

0.33

15°/195°

0.18

0.41

-0.24

0.40

At the inner circle

25°

0.19

0.34

10°/190°

0.23

0.23

-0.78

0.21

At the wall

35°

0.34

0.03

15°/195°

0.35

0.03

-1.78

0.04

  1. Mean directions of toads (n = 29 in all cases) were tested for significance using the Rayleigh-test; r represents the mean vector length; the absolute deviations from the mean vector under the natural field were compared between the distributions in the natural and in the reversed field using the t-test.
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Frontiers in Zoology

ISSN: 1742-9994