Table 1 Demographic information of the odontocete species for which DNA methylation data were available.

From: Multi-species and multi-tissue methylation clocks for age estimation in toothed whales and dolphins

Species

Common name

Origin

Na

No. animals

No. female

Mean age

Median age

Minimum age

Maximum age

Cephalorhynchus commersonii

Commerson’s dolphin

Zoo born

6 (3)

3

1

22.4

21.3

18.6

27.5

  

Wild

1 (1)

1

0

36.1

36.1

35.1

37.0

Delphinapterus leucas

Beluga

Zoo born

65 (48)

42

20

9.8

8.0

0.15

27.3

  

Wild

35 (17)

19

11

27.9

32.5

1.2

49.2

Delphinus delphis

Common dolphin

Wild

6 (3)

3

2

14.8

14.8

2.6

26.2

Globicephala macrorhynchus

Short-finned pilot whale

Wild

15 (9)

7

3

16.1

8.8

6.5

55.3

Lagenorhynchus obliquidens

Pacific white-sided dolphin

Zoo born

26 (13)

14

7

9.0

7.4

0.4

19.8

  

Wild

8 (4)

4

4

34.0

31.9

31.9

40.4

Orcinus orca

Killer whale

Zoo born

56 (29)

30

17

15.7

13.9

0.26

30.9

  

Wild

32 (7)

26b

19

22.9

21.0

0

54.6

Phocoena phocoena

Harbor porpoise

Wild

2 (1)

1

1

17

17

17

17

Steno bredanensis

Rough-tooth dolphin

Wild

12(6)

6

4

13.6

14.6

4.6

24.0

Tursiops truncatus

Bottlenose dolphin

Zoo born

160 (123)

120

81

16.5

14.5

0.57

40.7

  

Wild

21(17)

17

11

35.0

36.4

3.9

58.0

  1. aTotal number of samples used for clock development, number of blood samples in parenthesis.
  2. bTotal number of animals includes 19 samples from wild Norwegian killer whales of unconfirmed sex (unless mature) that were used in clock development.