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. 2017 Feb 27;12(2):e0172781. doi: 10.1371/journal.pone.0172781

Fig 1. Diagram illustrating the methodology used to quantify the body surface area covered by each scale morphotype in a model shark (Galeorhinus galeus).

Fig 1

(A) Representation of the different body areas on Cartesian coordinate systems. (B) Hypothetical body distribution of the scale morphotypes and their representation on the Cartesian coordinate systems (scale morphotypes covering negligible surfaces, such as the circum-oral region or the fin leading edges, have not been considered for the quantitative approach and are not shown on the graphs). Galeorhinus galeus drawing taken from Shark Trust [72], courtesy of Marc Dando. Scale drawings modified from Compagno [62]. Abbreviations: AF, anal fin; CF, caudal fin; DF 1, first dorsal fin; DF 2, second dorsal fin; DL, dorso-lateral region; PFd, dorsal surface of the pectoral fin; pFd, dorsal surface of the pelvic fin; PFv, ventral surface of the pectoral fin; pFv, ventral surface of the pelvic fin; V, ventral region.