Table 2 Summary of training data samples for multi-species and species-specific clocks, by tissue type and source.

From: Enhancing epigenetic aging clocks in cetaceans: accurate age estimations in small endangered delphinids, killer whales, pilot whales, belugas, humpbacks, and bowhead whales

Common name

Blood samples

Skin samples

Data source(s)

Beluga

67

118

Robeck et al. (2021b)4

Bors et al. (2021)27

Bowhead whale

0

79

Parsons et al. (2023)8

Commerson’s dolphin

4

4

Robeck et al. (2021b)4

Common bottlenose dolphin

143

115

Robeck et al. (2021a)3

Harbour porpoise

1

1

Robeck et al. (2021b)4

Hector’s dolphin

0

52

Hernandez et al. (2023)28

Humpback whale

0

91

Horvath et al. (2022)6

+ 1 skin sample previously unpublished

Indo-Pacific bottlenose dolphin

0

130

Peters et al. (2023)7

Killer whale

36

183

Parsons et al. (2023)8

Pacific white-sided dolphin

17

17

Robeck et al. (2021b)4

Rough-toothed dolphin

6

6

Robeck et al. (2021b)4

Short-beaked common dolphin

3

3

Robeck et al. (2021b)4

Short-finned pilot whale

9

6

Robeck et al. (2021b)4

Total samples

286

805

 

Grand total

1091