Longevity of Atlantic Sharpnose Sharks Rhizoprionodon and Blacknose Sharks in terraenovae Carcharhinus acronotus the western North Atlantic Ocean based on tag-recapture data and direct age estimates [version 2; referees: 2 approved]

Longevity of and in the Rhizoprionodon terraenovae Carcharhinus acronotus western North Atlantic Ocean was examined using direct age estimates from vertebral sections and tag-recapture data. Time-at-liberty ranged from 7.7-14.0 years (mean =10.1) for and 10.9-12.8 years (mean =11.9) for R. terraenovae C. . Maximum estimated longevity was determined to be 19.8 years acronotus through tag-recapture data and 18.5 years from direct age estimates for R. and 22.8 years through tag-recapture data and 20.5 years through terraenovae direct age estimates for . These longevity estimates represent a C. acronotus large increase over previous estimates and may have significant effects on analyses that depend on longevity including lifetime fecundity, mortality rates, demographic analyses and stock assessments. This article is included in the Elasmobranch biology channel. & conservation 1 2