Skip to main content

Table 1 Age estimates for specimens of Galeorhinus cuvieri using the von Bertalanffy functions for living relatives. All of the specimens are predicted to represent juveniles well before — or in some cases near — sexual and somatic maturity

From: An exceptionally preserved Eocene shark and the rise of modern predator–prey interactions in the coral reef food web

Taxon

S.

k

L

t 0

Age at maturity

MGGC 1976M

MCSNV T.1124F

MGP-PD 8871C

MCSNV VII B96

MNHN F Bol516

BM B70

Source

Galeorhinus galeus

Galeorhinus galeus*

M

0.1675

158.33

-1.2545

8+

3.94

3.94

2.16

2.87

2.23

1.24

[38]

Galeorhinus galeus*

F

0.1600

161.83

-1.2818

10+

3.97

3.97

2.19

2.90

2.26

1.26

[38]

Galeorhinus galeus*

C

0.1693

160.04

-1.2699

8-10+

3.95

3.95

2.17

2.88

2.24

1.24

[38]

Galeorhinus galeus § R1

M

0.154

142.9

-1.64

12-17

5.06

5.06

2.64

3.59

2.73

1.44

[39]

Galeorhinus galeus § R1

F

0.086

179.2

-2.68

13-15

5.70

5.70

2.97

4.08

3.08

1.49

[39]

Galeorhinus galeus § R1

C

0.104

165.8

-2.37

12-17

5.41

5.41

2.80

3.85

2.90

1.42

[39]

Galeorhinus galeus § R2

C

0.086

180.4

-2.48

12-17

5.81

5.81

3.13

4.22

3.23

1.66

[39]

Galeorhinus galeus § LF

C

0.131

154.9

-1.91

12-17

4.97

4.97

2.59

3.54

2.68

1.36

[39]

Triakidae

Mustelus mustelus

M

0.12

145.1

-2.14

6-9

6.24

6.24

3.24

4.41

3.35

1.74

[63]

Mustelus mustelus

F

0.06

204.96

-3.55

12-15

6.38

6.38

3.29

4.56

3.41

1.55

[63]

Mustelus mustelus

C

0.06

198.94

-3.82

6-15

6.53

6.53

3.28

4.61

3.41

1.46

[63]

Triakis semifasciata

M

0.089

149.9

-2.31

7+

8.38

8.38

4.62

6.10

4.76

2.71

[64]

Triakis semifasciata

F

0.073

160.2

-2.31

10+

9.39

9.39

5.41

7.00

5.56

3.32

[64]

Triakis semifasciata

C

0.082

153.6

-2.31

7-10+

8.83

8.83

4.96

6.50

5.11

2.97

[64]

Non-triakid carcharhiniforms

Carcharrhinus leucas

C

0.076

285

-3

M: 14-15

2.13

2.13

0.65

1.27

0.71

-0.24

[65]

F: 18+

Carcharhinus plumbeus

C

0.046

186

-6.45

30

8.39

8.39

3.63

5.57

3.81

1.01

[66]

Negaprion brevirostris

C

0.057

317.65

-2.302

M: 11.6+

3.70

3.70

1.99

2.71

2.07

0.97

[67]

F: 12.7+

Sphyrna lewini

M

0.131

336.4

-1.09

4.3+

1.35

1.35

0.66

0.95

0.69

0.25

[68]

Sphyrna lewini

F

0.156

353.3

-0.633

5.8+

1.30

1.30

0.76

0.99

0.78

0.43

[68]

Non-triakid carcharhiniforms with unrealistic age estimates

Galeus sauteri

M

0.081

70.1

-0.527

9+

50.76 x

80.37 x

17.63

[69]

Galeus sauteri

F

0.089

69.8

-0.307

7+

49.90 x

16.39

[69]

Rhizoprionodon taylori

M

1.337

65.2

-0.41

1

0.91

[70]

Rhizoprionodon taylori

F

1.013

73.2

-0.455

1

2.37

2.63

0.87

[70]

Scyliorhinus canicula

M

0.118

87.42

-1.09

6.6+

12.11

18.74 x

12.58

7.06

[71]

Scyliorhinus canicula

F

0.15

75.14

-0.96

7.9+

15.74

16.92

7.49

[71]

  1. The von Bertalanffy growth curves for small non-triakid carcharhiniforms do not fit readily to the specimens of G. cuvieri
  2. They either return unrealistic age estimates that are significantly older than the longevity of the living counterpart (x) or are unable to calculate the estimates because the specimens of G. cuvieri are larger than the mean maximum length (L ) of the original population (—). k = growth coefficient (rate of change in length increment); L = mean maximum length for the population; t 0 = hypothetical postnatal length (y intercept of the growth curve). S. = sex: C = male and female combined; F = female; M = male. Age at maturity is in years
  3. *Australian population; §New Zealand population; LFLength-frequency data; R1Reader 1 (for vertebral bands); R2Reader 2 (for vertebral bands)