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Correction: Atlantic Bluefin Tuna (Thunnus thynnus) Biometrics and Condition

  • Enrique Rodriguez-Marin,
  • Mauricio Ortiz,
  • José María Ortiz de Urbina,
  • Pablo Quelle,
  • John Walter,
  • Noureddine Abid,
  • Piero Addis,
  • Enrique Alot,
  • Irene Andrushchenko,
  • Simeon Deguara,
  • Antonio Di Natale,
  • Mark Gatt,
  • Walter Golet,
  • Saadet Karakulak,
  • Ai Kimoto,
  • David Macias,
  • Samar Saber,
  • Miguel Neves Santos,
  •  [ ... ],
  • Rafik Zarrad
  • [ view all ]
  • [ view less ]

Correction: Atlantic Bluefin Tuna (Thunnus thynnus) Biometrics and Condition

  • Enrique Rodriguez-Marin, 
  • Mauricio Ortiz, 
  • José María Ortiz de Urbina, 
  • Pablo Quelle, 
  • John Walter, 
  • Noureddine Abid, 
  • Piero Addis, 
  • Enrique Alot, 
  • Irene Andrushchenko, 
  • Simeon Deguara
PLOS
x

Table 2 was published with an incorrect number of specimens (n) and coefficient of determination (r2) for the weight conversion factors RWT-GGWT and GGWT-RWT for the East and Mediterranean stock unit. As the correct r2 is lower than the high coefficient of determination chosen as threshold for using the biometric relationship (r-square ≥ 0.98), we prefer to delete both relationships (GGWT = alpha + beta*RWT; and RWT = alpha + beta*GGWT) in Table 2. The only change implies deleting rows 11 and 12 from Table 2.

The corrected Table 2 is the following:

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Table 2. Atlantic bluefin tuna biometric relationships for the Eastern Atlantic and Mediterranean stock.

Independent and dependent variables (X and Y), number of specimens (n), parameters of the linear and nonlinear equations and coefficient of determination (r2). Straight fork length (SFL), curved fork length (CFL), straight first dorsal fin length (LD1), head length (HeadL), preopercular length (PreopL), round weight (RWT), gutted weight (GWT), gutted and gilled weight (GGWT), gutted, gilled and tailed weight (GGTWT) and dressed weight (DWT). Method A: Fit Robust Estimate; B: Nonlinear fit CV weighted; C: Nonlinear fit Gauss-Newton. Standardized WLRs (RWT_std-SFL_std). Length in centimeters and weight in kilograms.

https://doi.org/10.1371/journal.pone.0157291.t001

The last two sentences of the second paragraph of the Discussion section are incorrect. They should read:

We could not provide an updated gutted and gilled-round weight relationship (r-square <0.98), therefore, current ICCAT factors of 1.16 for the Atlantic [36] and the factor 1.13 for the Mediterranean [37] are the only available conversion factors, although both are cited without any accompanying information on the sampling.

Reference

  1. 1. Rodriguez-Marin E, Ortiz M, Ortiz de Urbina JM, Quelle P, Walter J, Abid N, et al. (2015) Atlantic Bluefin Tuna (Thunnus thynnus) Biometrics and Condition. PLoS ONE 10(10): e0141478. pmid:26505476