Morphometric Conversions for 33 Shark Species from the Western North Atlantic Ocean

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such as size-at-age and size-at-maturity, as essential inputs (Maunder and Punt, 2013), while multiple data-limited assessment approaches estimate fshing mortality from changes in the length distribution (Chong et al., 2020).Further, assessing progress relative to management regulations often requires the ability to accurately convert among length measurements, such as precaudal, standard, fork, natural total, and stretched total lengths, due to inconsistencies in the types of standard measurements collected among various research programs (Francis, 2006).For example, straight-line fork length (FL SL ), which is measured as the straight-line distance from the tip of the snout to the fork of the tail, is the measurement type designated for shark regulations in the Atlantic Ocean by both the International Commission for the Conservation of Atlantic Tunas (ICCAT) and by NOAA's National Marine Fisheries Service Highly Migratory Species Division 1 (ICCAT, 2016).However, particularly for large fsh, many researchers and fshermen use over-the-body (OTB; synonymous with curved measurements for this paper) measurements in which a measuring tape is laid along the surface 1 https://media.f isheries.noaa.

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