Display options
Share it on

F1000Res. 2014 Aug 12;3:190. doi: 10.12688/f1000research.4767.1. eCollection 2014.

Longevity of Atlantic Sharpnose Sharks Rhizoprionodon terraenovae and Blacknose Sharks Carcharhinus acronotus in the western North Atlantic Ocean based on tag-recapture data and direct age estimates.

F1000Research

Bryan S Frazier, William B Driggers Iii, Glenn F Ulrich

Affiliations

  1. South Carolina Department of Natural Resources, Marine Resources Research Institute, Charleston, SC, 29412, USA.
  2. National Marine Fisheries Service, Southeast Fisheries Science Center, Mississippi Laboratories, Pascagoula, MS, 39567, USA.

PMID: 25685321 DOI: 10.12688/f1000research.4767.1

Abstract

Longevity of Rhizoprionodon terraenovae and Carcharhinus acronotus in the western North Atlantic Ocean was examined using direct age estimates from vertebral sections and tag-recapture data. Time-at-liberty ranged from 7.7-12.1 years (mean =9.2) for R. terraenovae and 10.9-12.8 years (mean =11.9) for C. acronotus. Maximum estimated longevity was determined to be 19.8 years through tag-recapture data and 18.5 years from direct age estimates for R. terraenovae and 22.8 years through tag-recapture data and 20.5 years through direct age estimates for C. acronotus. These longevity estimates represent a 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.

Publication Types