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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)
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Zoological Letters

ISSN: 2056-306X

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