Table 1 Morphological parameters and 11-KT concentrations of eels used in this study.

From: Migratory Restlessness and the Role of Androgen for Increasing Behavioral Drive in the Spawning Migration of the Japanese eel

Year of study

2008

2011–2012

Yellow eel

Silver eel

Control

11 KT treatment

n

18

21

16

16

TL

58.5 ± 7.5

71.2 ± 6.5

70.7 ± 8.2

71.7 ± 8.2

BW

310 ± 156

622 ± 176

573 ± 230

594 ± 230

GSI

0.59 ± 0.13

2.48 ± 0.79

1.77 ± 0.47

1.99 ± 0.47

EI

3.87 ± 0.83

6.64 ± 1.17

6.69 ± 0.99

6.88 ± 0.99

GI

1.74 ± 0.38

0.54 ± 0.32

0.73 ± 0.32

0.69 ± 0.32

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